TITLE:  Conservation Tillage
 PUBLICATION DATE:  March 1994
 ENTRY DATE:  April 1995
 EXPIRATION DATE:  
 UPDATE FREQUENCY: 
 CONTACT:  Jane Gates
           Alternative Farming Systems Information Center
           National Agricultural Library
           Room 304, 10301 Baltimore Ave.
           Beltsville, MD  20705-2351
           Telephone:  (301) 504-6559
           FAX:  (301) 504-6409
           Internet:  afsic@nal.usda.gov
 DOCUMENT TYPE:  text
 DOCUMENT SIZE:  377k (163 pages)
 
 
 ==============================================================
                                              ISSN:  1052-5378
 United States Department of Agriculture
 National Agricultural Library
 10301 Baltimore Blvd.
 Beltsville, Maryland  20705-2351
 
 Conservation Tillage
 January 1991 - December 1993
 
 QB 94-13
 Quick Bibliography SeriesBibliographies in the Quick Bibliography Series of the National Agricultural
 Library, are intended primarily for current awareness, and as the title of the
 series implies, are not indepth exhaustive bibliographies on any given subject. 
 However, the citations are a substantial resource for recent investigations on
 a given topic.  They also serve the purpose of bringing the literature of
 agriculture to the interested user who, in many cases, could not access it by
 any other means.  The bibliographies are derived from computerized on-line
 searches of the AGRICOLA data base.  Timeliness of topic and evidence of
 extensive interest are the selection criteria.
 
 The author/searcher determines the purpose, length, and search strategy of the
 Quick Bibliography.  Information regarding these is available upon request from
 the author/searcher.
 
 Copies of this bibliography may be made or used for distribution without prior
 approval.  The inclusion or omission of a particular publication or citation
 may not be construed as endorsement or disapproval.
 
 To request a copy of a bibliography in this series, send the series title,
 series number and self-addressed gummed label to:
 
 U.S. Department of Agriculture
 National Agricultural Library
 Public Services Division, Room 111
 Beltsville, Maryland 20705
 
 Conservation Tillage
 January 1991 - December 1993
 
 
 Quick Bibliography Series:  QB 94-13
 Updates QB 92-02
 
 338 citations in English from AGRICOLA
 
 Jane Potter Gates
 Alternative Farming Systems Information Center
 
 
 
 March 1994National Agricultural Library Cataloging Record:
 
 Gates, Jane Potter
   Conservation tillage.
   (Quick bibliography series ; 94-13)
   1. Conservation tillage--Bibliography. 2. No-tillage--Bibliography. 3.
 Tillage--Bibliography. I. Title.
 aZ5071.N3 no.94-13
 
 The United States Department of Agriculture (USDA) prohibits discrimination in
 its programs on the basis of race, color, national origin, sex, religion, age,
 disability, political beliefs, and marital or familial status.  (Not all
 prohibited bases apply to all programs).  Persons with disabilities who require
 alternative means for communication of program information (braille, large
 print, audiotape, etc.) should contact the USDA Office of Communications at
 (202) 720-5881 (voice) or (202) 720-7808 (TDD).
 
 To file a complaint, write the Secretary of Agriculture, U.S. Department of
 Agriculture, Washington, D.C.  20250, or call (202) 720-7327 (voice) or (202)
 720-1127 (TDD).  USDA is an equal employment opportunity employer.
 
 AGRICOLA
 
 Citations in this bibliography were entered in the AGRICOLA database between
 January 1979 and the present.
 
 
 SAMPLE CITATIONS
 
 Citations in this bibliography are from the National Agricultural Library's
 AGRICOLA database.  An explanation of sample journal article, book, and
 audiovisual citations appears below.
 
 JOURNAL ARTICLE:
 
   Citation #                                     NAL Call No.
   Article title.
   Author.  Place of publication:  Publisher.  Journal Title.
   Date.  Volume (Issue).  Pages.  (NAL Call Number).
 
 Example:
   1                             NAL Call No.:  DNAL 389.8.SCH6
   Morrison, S.B.  Denver, Colo.:  American School Food Service
   Association.  School foodservice journal.  Sept 1987. v. 41
   (8). p.48-50. ill.
 
 BOOK:
 
   Citation #                                   NAL Call Number
   Title.
   Author.  Place of publication:  Publisher, date. Information
   on pagination, indices, or bibliographies.
 
 Example:
   1                        NAL Call No.:  DNAL RM218.K36 1987
   Exploring careers in dietetics and nutrition.
   Kane, June Kozak.  New York:  Rosen Pub. Group, 1987.
   Includes index.  xii, 133 p.: ill.; 22 cm.  Bibliography:
   p. 126.
 
 AUDIOVISUAL:
 
   Citation #                                  NAL Call Number
   Title.
   Author.  Place of publication:  Publisher, date.
   Supplemental information such as funding.  Media format
   (i.e., videocassette):  Description (sound, color, size).
 
 Example:
   1                    NAL Call No.: DNAL FNCTX364.A425 F&N AV
   All aboard the nutri-train.
   Mayo, Cynthia.  Richmond, Va.:  Richmond Public Schools,
   1981.  NET funded.  Activity packet prepared by Cynthia
   Mayo.  1 videocassette (30 min.): sd., col.; 3/4 in. +
   activity packet.                              Conservation Tillage
                           January 1991 - December 1993
 
 
 
                             SEARCH STRATEGY
 
       Set  Items  Description 
       ---  -----  ----------- 
       S1    2948  MINIMUM
       S2    9702  TILL?
       S3     671  MINIMUM(W)TILL?
       S4   49812  NO
       S5    9702  TILL?
       S6    1736  NO(W)TILL?
       S7    1029  ZERO
       S8    9702  TILL?
       S9      85  ZERO(W)TILL?
      S10   11508  REDUCED
      S11    9702  TILL?
      S12     251  REDUCED(W)TILL?
      S13   17950  NON
      S14    9702  TILL?
      S15      24  NON(W)TILL?
      S16    2468  MINIMUM()TILL? OR NO()TILL? OR ZERO()TILL? OR
                   REDUCED()TILL? OR NON()TILL?
      S17    4881  REDUCING
      S18     722  MULCH
      S19     146  CHISEL
      S20     313  S2 AND (REDUCING OR MULCH OR CHISEL)
      S21    2634  S16 OR S20
      S22   28398  CONSERVATION
      S23    9702  TILL?
      S24    1046  CONSERVATION(W)TILL?
      S25    3282  S21 OR CONSERVATION(W)TILL?
      S26     764  SOD
      S27     887  SEEDED
      S28      27  SOD(W)SEEDED
      S29     764  SOD
      S30    1677  SEEDING
      S31      27  SOD(W)SEEDING
      S32    3329  S25 OR (SOD()SEEDED OR SOD()SEEDING)
      S33     849  RIDGE
      S34    9702  TILL?
      S35      86  RIDGE(W)TILL?
      S36    3362  S32 OR RIDGE()TILL?
      S37    5341  GROUNDWATER
      S38   80467  WATER
      S39    1547  AQUIFER?
      S40   81640  GROUNDWATER OR WATER OR AQUIFER?
      S41    2841  S36 NOT S40
      S42    2550  S41/ENG,TI,DE
      S43  170983  PY=1991 : PY=1993
      S44     345  S42 AND PY=1991:1993
 
 
                               Conservation Tillage
 
 1                                                 NAL Call. No.: S604.N57 1991
 1991 North American conservation tillage clubs and associations a directory.
 Conservation Technology Information Center
 West Lafayette, IN (1220 Potter Drive, Room 170, Purdue Research Park) :
 CTIC,; 1991.
 12 leaves ; 28 cm.  Cover title.
 
 Language:  English
 
 Descriptors: Conservation tillage
 
 
 2                                                 NAL Call. No.: 275.29 N272EX
 A 1992 guide for--herbicide use in Nebraska.
 Lincoln, Neb. : The Service; 1992.
 EC - Cooperative Extension Service, University of Nebraska (92-130): 51 p.;
 1992.  Includes references.
 
 Language:  English
 
 Descriptors: Nebraska; Weed control; Herbicides; Weeds; Herbicide resistance;
 Conservation tillage
 
 
 3                                                   NAL Call. No.: S544.3.M7M5
 Agricultural management practices: reducing runoff and sediment production.
 Peeples, J.L.
 Starkville, Miss. : The Service; 1991 Jul.
 Information sheet - Mississippi State University, Cooperative Extension
 Service (1450): 2 p.; 1991 Jul.  Includes references.
 
 Language:  English
 
 Descriptors: Erosion; Conservation tillage; Runoff; Geological sedimentation
 
 
 4                                                      NAL Call. No.: S601.A34
 Agroecosystem management effects on soil carbon and nitrogen.
 Wood, C.W.; Edwards, J.H.
 Amsterdam : Elsevier; 1992 Apr.
 Agriculture, ecosystems and environment v. 39 (3/4): p. 123-138; 1992 Apr.
 Includes references.
 
 Language:  English
 
 Descriptors: Alabama; Tillage; Conservation tillage; Continuous cropping;
 Rotations; Triticum aestivum; Zea mays; Glycine max; Soil fertility; Nitrogen;
 Carbon; Soil organic matter; Crop residues; Mineralization; Nutrient
 availability; Soil depth; Biological activity in soil; Subtropics
 
 
 5                                                    NAL Call. No.: S539.5.J68
 Agronomic evaluation of fertilizer placement methods for no-tillage sorghum in
 vertisol clays.
 Chichester, F.W.; Morrison, J.E. Jr
 Madison, Wis. : American Society of Agronomy; 1992 Jul.
 Journal of production agriculture v. 5 (3): p. 378-382; 1992 Jul.  Includes
 references.
 
 Language:  English
 
 Descriptors: Texas; Sorghum bicolor; No-tillage; Conservation tillage;
 Placement; Fertilizer distributors; Subsurface application; Surface treatment;
 Surface modification; Nitrogen; Phosphorus; Nutrient uptake; Use efficiency;
 Leaves; Nutrient content; Crop yield; Grain; Seasonal variation
 
 
 6                                                     NAL Call. No.: SB599.C35
 Agronomic practices and common root rot in spring wheat: effect of tillage on
 disease and inoculum density of Cochliobolus sativus in soil.
 Tinline, R.D.; Spurr, D.T.
 Guelph, Ont. : Canadian Phytopathological Society; 1991.
 Canadian journal of plant pathology; Revue Canadienne de phytopathologie v. 13
 (3): p. 258-266; 1991.  Includes references.
 
 Language:  English
 
 Descriptors: Saskatchewan; Triticum aestivum; Root rots; Cochliobolus sativus;
 Disease prevalence; Tillage; No-tillage; Rotations; Summer fallow; Fusarium
 culmorum; Inoculum density
 
 
 7                                                     NAL Call. No.: 79.9 N814
 Alfalfa and orchardgrass control in no-till corn.
 Hartwig, N.L.
 College Park, Md. : The Society; 1991.
 Proceedings of the annual meeting - Northeastern Weed Science Society v. 45: p.
 33-38; 1991.  Meeting held January 8-10, 1991, Baltimore, Maryland.
 Includes references.
 
 Language:  English
 
 Descriptors: Zea mays; Weed control; No-tillage; Chemical control; Crop plants
 as weeds; Medicago sativa; Dactylis glomerata
 
 
 8                                                    NAL Call. No.: S539.5.J68
 Alternative crop prospects in western Nebraska.
 Plett, S.; Nelson, L.A.; Clegg, M.D.
 Madison, Wis. : American Society of Agronomy; 1991 Apr.
 Journal of production agriculture v. 4 (2): p. 162-166; 1991 Apr.  Includes
 references.
 
 Language:  English
 
 Descriptors: Nebraska; Crop management; Grain crops; Rowcrops; Field crops;
 Summer fallow; Rotations; No-tillage; Tillage; Profits; Returns; Farm inputs;
 Variable costs; Fixed costs; Total digestible nutrients; Nutrient content
 
 
 9                                                  NAL Call. No.: 79.9 SO8 (P)
 Alternative weed control in low input reduced tillage cropping systems.
 Janke, R.R.
 Raleigh, N.C. : The Society :.; 1991.
 Proceedings - Southern Weed Science Society v. 44: p. 40-41; 1991.  Paper
 presented at the meeting on "Perception: Fact or Fiction", held January 14-16,
 1991, San Antonio, Texas.
 
 Language:  English
 
 Descriptors: Weed control; Tillage; Cropping systems
 
 
 10                                                 NAL Call. No.: S541.5.W2R47
 Amber waves: a sourcebook for sustainable dryland farming in the northwestern
 United States.
 Granatstein, D.
 Pullman, Wash. : The Center; 1992.
 Research bulletin XB - Washington State University, Agricultural Research
 Center (1025): 82 p.; 1992.  Includes references.
 
 Language:  English
 
 Descriptors: Washington; Oregon; Mountain states of U.S.A.; Dry farming;
 Sustainability; Triticum aestivum; Conservation tillage; Agroclimatology;
 Rotations; Grain crops; Brassica; Resource materials
 
 
 11                                          NAL Call. No.: HD1781.W67 no.91/05
 An analyses of yield and net return distributions for conventional and
 conservation tillage practices in southw estern Ontario.
 Ker, Alan
 Guelph, Ont. : Dept. of Agricultural Economics and Business, University of
 Guelph,; 1991.
 17, [10] p. : ill. ; 28 cm. (Working paper / Department of Agricultural
 Economics and Business, University of Guelph ; 91/05).  February 1991.
 Includes bibliographical references (p. 14-15).
 
 Language:  English
 
 
 12                                                      NAL Call. No.: 420 K13
 Aphid predators associated with conventional- and conservation-tillage winter
 wheat.
 Rice, M.E.; Wilde, G.E.
 Lawrence, Kan. : The Society; 1991 Jul.
 Journal of the Kansas Entomological Society v. 64 (3): p. 245-250; 1991 Jul.
 Includes references.
 
 Language:  English
 
 Descriptors: Triticum aestivum; Schizaphis graminum; Hippodamia convergens;
 Coleomegilla maculata; Coccinella septempunctata; Scymnus; Chrysopa; Nabis;
 Araneae; Predators of insect pests; Population density; Conservation tillage;
 Minimum tillage; No-tillage
 
 
 13                                                    NAL Call. No.: SB193.F59
 Are herbicides necessary for alfalfa establishment?: Results from studies with
 conventional and no-till alfalfa.
 Brothers, B.A.; Hesterman, O.B.
 Columbia, Mo. : American Forage and Grassland Council; 1991.
 Proceedings of the Forage and Grassland Conference. p. 157-161; 1991.  Meeting
 held April 1-4, 1991, Columbia, Missouri.  Includes references.
 
 Language:  English
 
 Descriptors: Medicago sativa; Stand establishment; Herbicides; No-tillage;
 Tillage; Crop density
 
 
 14                                                      NAL Call. No.: S530.J6
 Area conservation tillage meetings--a successful educational program.
 Dickey, E.C.; Jasa, P.J.; Shelton, D.P.; Grisso, R.D.; Glewen, K.
 Madison, Wis. : American Society of Agronomy; 1991.
 Journal of agronomic education v. 20 (2): p. 115-119; 1991.  Includes
 references.
 
 Language:  English
 
 Descriptors: Nebraska; Conservation tillage; Educational programs; Program
 development; Program effectiveness; Plan implementation and evaluation;
 Cooperative extension service
 
 
 15                                                      NAL Call. No.: 4 AM34P
 Autumn sward suppression and insect control effects on late-winter no-till
 establishment of ladino clover.
 Zarnstorff, M.E.; Chamblee, D.S.; Mueller, J.P.; Campbell, W.V.
 Madison, Wis. : American Society of Agronomy; 1992 Nov.
 Journal of the American Society of Agronomy v. 84 (6): p. 983-987; 1992 Nov.
 Includes references.
 
 Language:  English
 
 Descriptors: North Carolina; Festuca arundinacea; Paraquat; Site preparation;
 Winter; Sowing date; Crop establishment; Trifolium repens; No-tillage; Sowing
 methods; Insect pests; Slugs; Chemical control; Insect control; Pest control
 
 Abstract:  Ladino clover (Trifolium repens L.) has traditionally been
 established in the autumn in the southeastern USA. Grass suppression and
 insect control have proven beneficial for successful autumn no-till
 establishment. Winter planting offers an alternative, yet little is known about
 late winter grass suppression and insect or mollusk control. Herbicide applied
 at planting in late winter usually failed to suppress or kill
 cool-season grasses. Field studies were conducted to evaluate (i) the
 influence of fall suppression or kill with paraquat (1,1'-dimethyl-4-4'
 bipyridinium ion) of the tall fescue (Festuca arundinacea Schreb.) sward on
 late-winter (February or March) no-till establishment of ladino clover, (ii)
 establishment by drilling versus surface planting and (iii) the influence of
 suppression of insect and/or mollusk populations on the late-winter no-till
 establishment of ladino clover into tall fescue. Initial late winter no-till
 clover densities were 30% greater for the March as compared to February
 planting (three experiment average). Drill planting of clover resulted in 2.1
 times greater initial clover density (four experiment average) and 1.9 times
 more clover yield than surface planting (three experiment average).
 Application of paraquat to tall fescue in bands (13 cm) in mid-October
 resulted in essentially complete grass kill with the bands. Neither autumn
 grass suppression nor the use of insecticide or molluscicide altered clover
 density or stand. Late-winter, no-till establishment provides an alternative to
 fall establishment. Our results indicate that fall chemical suppression of
 grass swards is not necessary for successful late-winter establishment of
 ladino clover.
 
 
 16                                                    NAL Call. No.: SB610.W39
 Banded herbicide applications and cultivation in a modified no-till corn (Zea
 mays) system.
 Eadie, A.G.; Swanton, C.J.; Shaw, J.E.; Anderson, G.W.
 Champaign, Ill. : The Society; 1992 Jul.
 Weed technology : a journal of the Weed Science Society of America v. 6 (3): p.
 535-542; 1992 Jul.  Includes references.
 
 Language:  English
 
 Descriptors: Ontario; Zea mays; Cultivars; No-tillage; Atrazine; Metolachlor;
 Herbicide mixtures; Application rates; Band placement; Broadcasting; Interrow
 cultivation; Integrated pest management; Weed control; Weeds; Biomass
 production; Crop yield
 
 
 17                                             NAL Call. No.: 290.9 AM3Ps (IR)
 Beginning of motion for selected unanchored residue materials.
 Gilley, J.E.; Kottwitz, E.R.
 New York, N.Y. : American Society of Civil Engineers, c1983-; 1992 Jul.
 Journal of irrigation and drainage engineering v. 118 (4): p. 619-630; 1992
 Jul.  Includes references.
 
 Language:  English
 
 Descriptors: Conservation tillage; Crop residues; Movement in soil; Overland
 flow; Erosion; Hydraulics; Regression analysis
 
 
 18                                                    NAL Call. No.: 464.8 P56
 Biological control to reduce inoculum of the tan spot pathogen Pyrenophora
 tritici-repentis in surface-borne residues of wheat fields.
 Pfender, W.F.; Zhang, W.; Nus, A.
 St. Paul, Minn. : American Phytopathological Society; 1993 Apr.
 Phytopathology v. 83 (4): p. 371-375; 1993 Apr.  Includes references.
 
 Language:  English
 
 Descriptors: Kansas; Triticum; Pyrenophora tritici-repentis; Plant pathogenic
 fungi; Biological control agents; Pithomyces chartarum; Basidiomycotina;
 Aphyllophorales; Cultural control; Crop residues; Conservation tillage
 
 Abstract:  Field plots of conservation-tillage wheat straw naturally infested
 with Pyrenophora tritici-repentis were treated with bran-based inoculum of
 three potential biocontrol fungi, and reduction in the number of residue-borne
 pseudothecia (primary inoculum of the pathogen) was determined. Limonomyces
 roseipellis significantly reduced residue-borne primary inoculum of P.
 tritici-repentis in 3 of 4 yr of experiments; an unidentified agonomycete was
 effective in two of three experiments, but Laetisaria arvalis was ineffective.
 Although L. roseipellis reduced inoculum by 60-80%, greater reductions would be
 necessary for acceptable control of this disease. Retention of dry
 bran-based inoculum on straw was enhanced by the use of alginate, but further
 improvements in formulation and application methods are required for effective
 biocontrol of pathogens in surface-borne crop residues.
 
 
 19                                                    NAL Call. No.: 100 M69MI
 Blackbelt prairie soil subject of cropping study.
 Mississippi State, Miss. : The Station; 1992 Apr.
 MAFES research highlights - Mississippi Agricultural and Forestry Experiment
 Station v. 55 (4): p. 4; 1992 Apr.
 
 Language:  English
 
 Descriptors: Mississippi; Prairies; Prairie soils; Erosion; No-tillage;
 Tillage
 
 
 20                                                 NAL Call. No.: 275.29 W27PN
 Blackgrass Alopecurus myosuroides Huds.
 Aldrich-Markham, S.
 Corvallis, Or. : The Service; 1992 Jan.
 PNW - Pacific Northwest Extension Publication, Washington, Oregon, and Idaho
 State Universities, Cooperative Extension Service (377): 4 p.; 1992 Jan.  In
 Subseries: Weeds.  Includes references.
 
 Language:  English
 
 Descriptors: Washington; Oregon; Alopecurus myosuroides; Weed control;
 No-tillage; Cultural control; Plowing; Herbicides
 
 
 21                                                     NAL Call. No.: aS622.S6
 Buffer strips, conservation tillage pay off.
 Gillespie, M.
 Washington, D.C. : The Service; 1992 Jan.
 Soil & water conservation news - U.S. Deptartment of Agriculture, Soil
 Conservation Service v. 12 (5): p. 7; 1992 Jan.
 
 Language:  English
 
 Descriptors: Alabama; Conservation tillage; Erosion control; Gossypium
 
 
 22                                                     NAL Call. No.: 56.9 SO3
 Bulk density of a sandy loam: traffic, tillage, and irrigation-method effects.
 Meek, B.D.; Rechel, E.R.; Carter, L.M.; DeTar, W.R.
 Madison, Wis. : The Society; 1992 Mar.
 Soil Science Society of America journal v. 56 (2): p. 562-565; 1992 Mar.
 Includes references.
 
 Language:  English
 
 Descriptors: California; Sandy loam soils; Soil density; Bulk density;
 Trafficability; Soil compaction; Chiselling; Resistance to penetration;
 Infiltration; Trickle irrigation; Flood irrigation; Furrows
 
 Abstract:  Modern crop production creates a cycle between soil compaction
 caused by traffic and alleviation of this condition by tillage or natural
 processes such as freezing and thawing. The objective of this study was to
 evaluate important management practices as they relate to changes in bulk
 density of a tilled sandy loam soil. Practices evaluated were irrigation
 method, time between tillage and traffic, tire pressure and wheel load of
 applied traffic, and controlled traffic. Relationships among bulk density,
 penetration resistance, and infiltration rate were determined. Experiments were
 conducted in the San Joaquin Valley of California, on a sandy loam soil
 (Entisol) with an organic-matter content of < 1%. After tillage, settling and
 trafficking of a soil resulted in rapid changes in its bulk density until a new
 equilibrium was reached. Tire pressure of 408 kPa and wheel weight of 2724 kg
 applied at moisture contents near field capacity resulted in a bulk density of
 1.92 Mg m-3, compared with a value of 1.67 for no traffic. The time
 interval between tillage and traffic did not affect final bulk density. Drip
 irrigation, which did not saturate the soil, resulted in a bulk density of
 approximately 0.1 Mg m-3 lower than flood irrigation, which saturated the soil
 surface. Wheel traffic in the furrow resulted in only small changes in the bulk
 density within the row. When tillage did not occur between cropping
 seasons, traffic caused high bulk densities in the furrow but only small
 changes in the row. An increase in bulk density from 1.7 to 1.89 Mg m-3
 decreased the infiltration rate by four times and increased resistance to
 penetration at the end of the season by three times. Knowledge of how
 management practices affect bulk density can aid growers in reducing
 recompaction following tillage.
 
 
 23                                                  NAL Call. No.: SB610.2.B74
 Changes in weed populations and seed bank through two cycles of a
 maize-soyabean rotation in Ontario, Canada.
 Benoit, D.L.; Swanton, C.J.; Chandler, K.; Derksen, D.A.
 Surrey : BCPC Registered Office; 1991.
 Brighton Crop Protection Conference-Weeds v. 1: p. 403-410; 1991.  Includes
 references.
 
 Language:  English
 
 Descriptors: Ontario; Zea mays; Glycine max; Rotation; Weed control;
 Herbicides; Minimum tillage; Seed banks
 
 
 24                                                     NAL Call. No.: 56.9 SO3
 Chemical attributes of soils subjected to no-till cropping with rye cover
 crops.
 Eckert, D.J.
 Madison, Wis. : The Society; 1991 Mar.
 Soil Science Society of America journal v. 55 (2): p. 405-409; 1991 Mar.
 Includes references.
 
 Language:  English
 
 Descriptors: Ohio; Secale cereale; Zea mays; Glycine max; Soil chemistry;
 Calcium; Carbon; Magnesium; Nitrogen fertilizers; Phosphorus; Potassium;
 No-tillage; Rotations; Soil fertility; Soil physical properties
 
 Abstract:  Rye (Secale cereale L.) cover crops are often promoted to supply
 additional residue in no-till production situations; however, the effect of
 inclusion of rye on soil chemical properties is largely unknown. Soils were
 sampled, 20 cm deep, from four 4-yr studies in which no-till corn (Zea mays L.)
 and soybean (Glycine max L. Merr.) were grown continuously or in rotation on a
 Canfield silt loam (fine-loamy, mixed, mesic Aquic Fragiudalf) or in rotation
 only on a Hoytville silty clay (fine, illitic, mesic Mollic
 Ochraqualf), with and without a winter rye cover crop. Corn had been
 fertilized each spring with 224 kg N ha(-1) as either injected anhydrous
 ammonia or surface-broadcast urea-ammonium nitrate (UAN) solution. All plots
 sampled showed greater concentrations of organic C, exchangeable K, and Bray-1
 extractable P in the surface 5-cm increment of soil than deeper in the sampled
 profile. Exchangeable Ca and Mg concentrations were often less at this depth
 than deeper in the profile, particularly when N was applied as
 surface-broadcast UAN solution. Soil pH was generally lowest in the zone of N
 application. Addition of the rye cover crop had little effect on the
 distribution of chemical attributes, other than increasing concentrations of
 exchangeable K near the soil surface in several comparisons.
 
 
 25                                                   NAL Call. No.: S451.P4P45
 Cleaning up with dirty farming.
 Pruyne, R.
 University Park, Pa. : Pennsylvania State University; 1991.
 PennState agriculture. p. 8-11; 1991.
 
 Language:  English
 
 Descriptors: Pennsylvania; Conservation tillage; Erosion control; Topsoil;
 Erosion
 
 
 26                                                    NAL Call. No.: SB610.W39
 Common lambsquarters (Chenopodium album) control with non-selective
 herbicides.
 Higgins, J.M.; Whitwell, T.; Toler, J.E.
 Champaign, Ill. : The Society; 1991 Oct.
 Weed technology : a journal of the Weed Science Society of America v. 5 (4): p.
 884-886; 1991 Oct.  Includes references.
 
 Language:  English
 
 Descriptors: South Carolina; Triticum aestivum; Weed control; Chemical
 control; Glyphosate; Paraquat; Glufosinate; Conservation tillage; Application
 rates
 
 
 27                                                  NAL Call. No.: HD1773.A2N6
 Comparative economics of alternative agricultural production systems: a
 review.
 Fox, G.; Weersink, A.; Sarwar, G.; Duff, S.; Deen, B.
 Morgantown, W.Va. : The Northeastern Agricultural and Resource Economics
 Association; 1991 Apr.
 Northeastern journal of agricultural and resource economics v. 20 (1): p.
 124-142; 1991 Apr.  Paper submitted in response to call for papers on the theme
 "The Effects of Agricultural Production on Environmental Quality.". Literature
 review.  Includes references.
 
 Language:  English
 
 Descriptors: North America; Crops; Vegetables; Conservation tillage; Erosion;
 Pest control; Environmental protection; Valuation; Externalities; Agricultural
 production; Profitability; Economic impact; Literature reviews; Alternative
 farming; Organic farming; Traditional farming
 
 
 28                                                      NAL Call. No.: 450 C16
 A comparison of broadcast and drill methods for no-till seeding winter wheat.
 Collins, B.A.; Fowler, D.B.
 Ottawa : Agricultural Institute of Canada; 1992 Oct.
 Canadian journal of plant science; Revue canadienne de phytotechnie v. 72 (4):
 p. 1001-1008; 1992 Oct.  Includes references.
 
 Language:  English
 
 Descriptors: Saskatchewan; Triticum aestivum; No-tillage; Sowing date; Sowing
 methods; Sowing rates; Broadcasting; Crop establishment; Crop yield; Plant
 development; Brassica campestris; Brassica napus; Linum usitatissimum
 
 
 29                                                     NAL Call. No.: 421 J822
 Comparison of slug Mollusca: Pulmonata) trapping in no-till alfalfa.
 Barratt, B.I.P.; Byers, R.A.; Bierlein, D.L.
 Lanham, Md. : Entomological Society of America; 1993 Jun.
 Journal of economic entomology v. 86 (3): p. 917-923; 1993 Jun.  Includes
 references.
 
 Language:  English
 
 Descriptors: Pennsylvania; Medicago sativa; No-tillage; Plant pests; Slugs;
 Trapping; Arion fasciatus; Deroceras laeve; Deroceras reticulatum
 
 Abstract:  A comparison of defined-area traps (DATs) and refuge traps (RTs), in
 no-till alfalfa (Medicago sativa L.) to census the slug species Deroceras
 reticulatum (Muller), Deroceras laevae (Muller), and Arion fasciatus (Nielson)
 was made. The objective of the study was to determine whether Rts could be used
 in a range of crop densities and climatic conditions to assess slug
 density. In relation to slug density measured by DATs, Rts were less effective
 in trapping slugs in spring, when D. reticulatum was very small, but trapped
 relatively higher numbers than DATs when slugs were larger. Trapping methods
 were assessed between May and November in no-till alfalfa plots with plant
 densities ranging from 52 to 99% total plant cover in May to 78 to 91% cover in
 July. Alfalfa crop density had no effect upon RT catches except in dry
 conditions in June, when Rts collected more slugs in plots with most
 vegetation cover. Neither trap collected slugs during severe drought
 conditions in July when soil moisture content in the top 5 cm of the soil
 profile dropped to about 6%.
 
 
 30                                                    NAL Call. No.: 56.8 J822
 A comparison of wing-chisel tillage with conventional tillage on crop yield,
 resource conservation, and economics.
 Heilman, M.D.; Hickman, M.V.; Taylor, M.J.
 Ankeny, Iowa : Soil and Water Conservation Society of America; 1991 Jan.
 Journal of soil and water conservation v. 46 (1): p. 78-80; 1991 Jan.
 Includes references.
 
 Language:  English
 
 Descriptors: Texas; Sorghum bicolor; Tillage; Crop yield; Economics
 
 
 31                                                    NAL Call. No.: 100 M69MI
 Compliance means reliance on research and ryegrass.
 Broadway, R.
 Mississippi State, Miss. : The Station; 1991 Dec.
 MAFES research highlights - Mississippi Agricultural and Forestry Experiment
 Station v. 54 (12): p. 4; 1991 Dec.
 
 Language:  English
 
 Descriptors: Mississippi; Grasslands; Fodder crops; Legislation; Conservation
 tillage; Soil conservation
 
 
 32                                                     NAL Call. No.: 23 AU792
 Conservation cropping systems for the semi-arid tropics of north Queensland,
 Australia.
 Cogle, A.L.; Bateman, R.J.; Heiner, D.H.
 East Melbourne : Commonwealth Scientific and Industrial Research Organization;
 1991.
 Australian journal of experimental agriculture v. 31 (4): p. 515-523. maps;
 1991.  Includes references.
 
 Language:  English
 
 Descriptors: Queensland; Arachis hypogaea; Sorghum bicolor; Zea mays;
 Conservation tillage; Cropping systems; Crop yield; Semiarid zones; Tropics;
 Weed control
 
 
 33                                                    NAL Call. No.: 56.8 J822
 Conservation tillage and season effects on soil erosion risk.
 Mills, W.C.; Thomas, A.W.; Langdale, G.W.
 Ankeny, Iowa : Soil and Water Conservation Society of America; 1991 Nov.
 Journal of soil and water conservation v. 46 (6): p. 452-460; 1991 Nov.
 Includes references.
 
 Language:  English
 
 Descriptors: Erosion; Conservation tillage; Watersheds; Rain; Runoff; Losses
 from soil systems; Crop management; Probability; Risk; Seasonal variation;
 Effects
 
 
 34                                                  NAL Call. No.: 275.29 M58B
 Conservation tillage drills available in Michigan.
 Pierce, F.J.; Landeck, J.K.; King, R.L.; Harrigan, T.M.
 East Lansing, Mich. : The Service; 1992 Jun.
 Extension bulletin E - Cooperative Extension Service, Michigan State
 University (2337): 4 p.; 1992 Jun.
 
 Language:  English
 
 Descriptors: Michigan; Direct sowing; Drills
 
 
 35                                                      NAL Call. No.: S530.J6
 A conservation tillage educational program.
 Dickey, E.C.; Jasa, P.J.; Shelton, D.P.
 Madison, Wis. : American Society of Agronomy; 1991.
 Journal of agronomic education v. 20 (2): p. 102-107; 1991.  Includes
 references.
 
 Language:  English
 
 Descriptors: Nebraska; Conservation tillage; Educational programs; Erosion;
 Erosion control; Fuel consumption; Energy conservation; Cooperative extension
 service; Program evaluation; Surveys
 
 
 36                                                 NAL Call. No.: S544.3.N6N62
 Conservation tillage for burley tobacco: nitrogen recommendations.
 Hoyt, G.D.
 Raleigh, N.C. : The Service; 1992 Dec.
 AG - North Carolina Agricultural Extension Service, North Carolina State
 University v.): p. 36-38; 1992 Dec.  In th series analytic: 1993 Burley
 Tobacco.  Includes references.
 
 Language:  English
 
 Descriptors: North Carolina; Nicotiana tabacum; Conservation tillage;
 Nitrogen; Application rates; Transplanters; Farm machinery; Cover crops
 
 
 37                                       NAL Call. No.: aG3701.J2 1991 .U5 Map
 Conservation tillage in the US 1991., Rev. Oct. 1991..
 United States. Soil Conservation Service; National Cartographic Center (U.S.)
 Ft. Worth, TX : USDA-SCS-National Cartographic Center ; West Lafayette, IN. :
 Conservation Technology Information Center, [distributor],; 1991.
 1 map : col. ; 19 x 25 cm.  Data provided by CTIC 1991.  Map prepared using
 automated map construction. National Cartographic Center, Fort Worth, Texas
 1991.  Computer screen image map.  Includes graph of "Acres planted by region"
 and inset map.  1006643.
 
 Language:  English
 
 Descriptors: Conservation tillage
 
 
 38                                       NAL Call. No.: aG3701.J2 1992 .U5 Map
 Conservation tillage in the US 1992., Rev. Oct. 1992..
 United States. Soil Conservation Service; National Cartography and Geographic
 Information Systems Center (U.S.)
 Ft. Worth, TX : USDA-SCS-National Cartography and GIS Center ; West Lafayette,
 IN. : Conservation Technology Information Center, [distributor],; 1992.
 1 map : col. ; 19 x 25 cm.  Source: Data provided by CTIC 1991. Data for
 Alaska and Hawaii falls below minimum category.  Map prepared using automated
 map construction. National Cartography and Geographic Information System
 Center, Fort Worth, Texas, 1992.  Computer generated map.  Includes graph of
 "Acres planted by region" and inset map.  1006643.
 
 Language:  English; English
 
 Descriptors: Conservation tillage
 
 
 39                                                    NAL Call. No.: aZ5071.N3
 Conservation tillage, including minimum and no-tillage: January 1979-August
 1991.
 MacLean, J.T.
 Beltsville, Md. : The Library; 1991 Oct.
 Quick bibliography series - U.S. Department of Agriculture, National
 Agricultural Library (U.S.). (92-02): 72 p.; 1991 Oct.  Updates QB 90-15.
 Bibliography.
 
 Language:  English
 
 Descriptors: Conservation tillage; No-tillage; Minimum tillage; Bibliographies
 
 
 40                                                     NAL Call. No.: SB249.N6
 Conservation tillage overview and terminology.
 Hutchinson, R.L.
 Memphis, Tenn. : National Cotton Council of America; 1993.
 Proceedings - Beltwide Cotton Conferences. p. 108-110; 1993.  Meeting held
 January 10-14, 1993, New Orleans, Louisiana.  Includes references.
 
 Language:  English
 
 Descriptors: Conservation tillage; Terminology
 
 
 41                                                     NAL Call. No.: 100 Al1H
 A conservation tillage practice that resists compaction.
 Raper, R.L.; Reeves, D.W.; Torbert, H.A.
 Auburn, Ala. : Agricultural Experiment Station of Auburn University, 1954-;
 1993.
 Highlights of agricultural research v. 40 (2): p. 3; 1993.
 
 Language:  English
 
 Descriptors: Alabama; Cabt; Conservation tillage; Soil compaction; Subsoilers
 
 
 42                                                  NAL Call. No.: 100 L93 (3)
 Conservation tillage studies.
 Bollich, P.K.; Leonards, W.J. Jr; Romero, G.R.; Walker, D.M.
 Crowley, La. : The Station; 1991.
 Annual research report - Louisiana Agricultural Experiment Station (83rd): p.
 152-160; 1991.
 
 Language:  English
 
 Descriptors: Louisiana; Oryza sativa; Cultivars; Conservation tillage
 
 
 43                                                     NAL Call. No.: SB249.N6
 Conservation tillage systems and cotton insect pest management in Louisiana.
 Leonard, B.R.; Hutchinson, R.L.; Graves, J.B.
 Memphis, Tenn. : National Cotton Council of America; 1992.
 Proceedings - Beltwide Cotton Production Research Conferences v. 2: p.
 807-810; 1992.  Includes references.
 
 Language:  English
 
 Descriptors: Louisiana; Gossypium; Conservation tillage; Insect pests; Pest
 control
 
 
 44                                               NAL Call. No.: S604.C675 1992
 Conservation tillage systems and management crop residue management with
 no-till, ridge-till, mulch-till., 1st ed..
 Midwest Plan Service
 Ames, IA : MidWest Plan Service, Agricultural and Biosystems Engineering
 Dept., Iowa State University,; 1992.
 iv, 140 p. : ill. (some col.), maps ; 28 cm.  MWPS-45.  Includes
 bibliographical references (p. 132-135) and index.
 
 Language:  English
 
 Descriptors: Conservation tillage
 
 
 45                                        NAL Call. No.: Videocassette no.1616
 Conservation tillage using SCEPTER herbicide [and] SQUADRON herbicide American
 Cyanamide Company..  Using SCEPTER herbicide and SQUADRON herbicide in
 conservation tillage
 American Cyanamid Company
 Wayne, NJ : The Company,; 1992.
 1 videocassette (13 min.) : sd., col. ; 1/2 in. + 1 booklet (14 p. ; 28 cm.).
 Title on cassette label: Using SCEPTER herbicide and SQUADRON herbicide in
 conservation tillage.
 
 Language:  English
 
 Descriptors: Herbicides; Conservation tillage
 
 Abstract:  Shows how to apply SCEPTER and SQAUDRON herbicides in various
 methods of conservation tillage.
 
 
 46                                                    NAL Call. No.: 1.98 AG84
 Conserving cropland for the future.
 Corliss, J.
 Washington, D.C. : The Service; 1991 Jun.
 Agricultural research - U.S. Department of Agriculture, Agricultural Research
 Service v. 39 (6): p. 12-15; 1991 Jun.
 
 Language:  English
 
 Descriptors: Conservation tillage; Soil conservation; Erosion; Weed control
 
 
 47                                                    NAL Call. No.: SB327.M52
 Considerations for no tillage in dry beans.
 Horny, P.
 Saginaw, Mich. : Michigan Bean Shippers Association; 1992.
 Michigan dry bean digest v. 16 (3): p. 17; 1992.
 
 Language:  English
 
 Descriptors: Dry beans; No-tillage
 
 
 48                                                    NAL Call. No.: SB599.C35
 Contribution of Avena spp., used in crop rotation systems under conservation
 tillage, to the inoculum levels of some cereal pathogens.
 Fernandez, M.R.; Swift Current, Saskatchewan; Santos, H.P. dos
 Guelph, Ont. : Canadian Phytopathological Society; 1992.
 Canadian journal of plant pathology; Revue Canadienne de phytopathologie v. 14
 (4): p. 271-277; 1992.  Includes references.
 
 Language:  English
 
 Descriptors: Rio grande do sul; Parana; Triticum aestivum; Hordeum vulgare;
 Avena sativa; Avena nuda; Cochliobolus sativus; Gibberella zeae; Crop
 residues; Pyrenophora avenae; Plant pathogenic fungi; Fungal diseases;
 Incidence; Rotations; Conservation tillage; Inoculum density; Field tests;
 Greenhouse culture
 
 
 49                                                    NAL Call. No.: 79.9 W52R
 Control of annual bromes and Italian ryegrass using triallate in winter wheat
 with varying levels of crop residue.
 Aldrich-Markham, S.
 S.l. : The Society; 1992.
 Research progress report - Western Society of Weed Science. p.
 III/155-III/156; 1992.  Meeting held on March 9-12, 1992, Salt Lake City, Utah.
 
 Language:  English
 
 Descriptors: Oregon; Triticum; Bromus; Herbicides; Lolium multiflorum; Minimum
 tillage; Weed control; Crop residues
 
 
 50                                         NAL Call. No.: NBULD3656 1992 L5643
 Controlled wheel traffic effects on soil properties in ridge till..
 University of Nebraska--Lincoln thesis : Agronomy
 Liebig, Mark A.
 1992; 1992.
 ix, 97 leaves : ill. ; 28 cm.  Includes bibliographical references.
 
 Language:  English
 
 
 51                                                     NAL Call. No.: 100 T25F
 Corn hybrids compared in no-till and conventional cropping systems.
 Graves, C.R.; West, D.R.; Kincer, D.R.; Harrison, M.P.; Bradley, J.F.
 Knoxville, Tenn. : The Station; 1993.
 Tennessee farm and home science : progress report - Tennessee Agricultural
 Experiment Station (165): p. 11-16; 1993.  Includes references.
 
 Language:  English
 
 Descriptors: Tennessee; Zea mays; No-tillage; Cultivars; Crop yield; Tillage
 
 
 52                                                      NAL Call. No.: 4 AM34P
 Corn response to rye cover crop, tillage methods, and planter options.
 Raimbault, B.A.; Vyn, T.J.; Tollenaar, M.
 Madison, Wis. : American Society of Agronomy; 1991 Mar.
 Agronomy journal v. 83 (2): p. 287-290; 1991 Mar.  Includes references.
 
 Language:  English
 
 Descriptors: Ontario; Zea mays; Cover crops; Secale cereale; No-tillage;
 Plowing; Tillage; Planters; Coulters; Crop residues; Preplanting treatment;
 Application date; Timing; Paraquat; Crop yield; Dry matter accumulation
 
 Abstract:  Studies in Ontario have shown that corn (Zea mays L.) yields are
 reduced when corn is seeded immediately after rye (Secale cereale L.) harvest
 or chemical kill of winter rye. A study was conducted in 1983 and 1984 on a
 Maryhill (Typic Hapludalf) loam soil to determine the effect of spring tillage
 systems and timing of rye chemical kill on the subsequent corn crop. The rye
 was seeded in early October after corn silage harvest. The tillage treatments
 consisted of (i) moldboard plow plus secondary tillage, (ii) strip tillage,
 (iii) no-tillage with ripple coulters (iv) no-tillage with disc furrowers plus
 plow coulters, and (v) no-tillage with ripple coulters plus plow coulters. The
 rye kill treatments were early (2 wk before planting) or late (just prior to
 corn planting). Corn whole-plant yields averaged 13.6 and 12.4 Mg ha-1 for
 early and late rye kill, respectively. Corn yield in the moldboard plow
 treatment was higher thin in strip tillage and the average of no-till
 treatments; however, using disc furrowers produced yields equal to those with
 the moldboard plow treatment. Moving the residue out of the row with disc
 furrowers resulted in corn yields that were significantly higher than those in
 no-till treatments with ripple coulters. The improvement in plant growth due to
 an early rye kill (as opposed to a late rye kill) was often greater with the
 conservation tillage systems relative to the moldboard plow treatment. A crop
 production system is proposed involving chemical control of a winter rye cover
 crop 2 wk before corn planting and planting the corn with a modified no-till
 system that removes rye residue from the row area.
 
 
 53                                                     NAL Call. No.: S590.C63
 Corn root dry matter and nitrogen distribution as determined by sampling
 multiple soil cores around individual plants.
 Crozier, C.R.; King, L.D.
 New York, N.Y. : Marcel Dekker; 1993.
 Communications in soil science and plant analysis v. 24 (11/12): p. 1127-1138;
 1993.  Includes references.
 
 Language:  English
 
 Descriptors: North Carolina; Zea mays; Roots; Shoots; Dry matter; Dry matter
 distribution; Nitrogen; Nutrient uptake; Nitrogen content; Plant composition;
 Spatial distribution; Tillage; No-tillage
 
 
 54                                                      NAL Call. No.: 4 AM34P
 Corn-weed interactions with long-term conservation tillage management.
 Coffman, C.B.; Frank, J.R.
 Madison, Wis. : American Society of Agronomy; 1992 Jan.
 Agronomy journal v. 84 (1): p. 17-21; 1992 Jan.  Includes references.
 
 Language:  English
 
 Descriptors: Maryland; Zea mays; Crop weed competition; Conservation tillage;
 Continuous cropping; Monoculture; Herbicide mixtures; Alachlor; Glyphosate;
 Paraquat; Atrazine; Simazine; Cyanazine; Butylate; Eptc; Application rates;
 Timing; Application date; Weed control; Chemical control; Crop yield; Grain;
 Amaranthus hybridus; Panicum dichotomiflorum
 
 Abstract:  The use of monoculture production systems such as continuous corn
 (Zea mays L.) in conservation-tillage systems has created a requirement for
 information concerning crop and weed responses to annual herbicide inputs. The
 objective of this 5-yr investigation (1981-1995) was to evaluate weed problems
 and delineate weed and crop interactions in continuous conservation-tillage
 corn as affected by annual herbicide applications. Preemergence treatments
 contained selected combinations of triazines or a triazine plus alachlor
 [2-chloro-N-(2,6-diethylphenyl)-N-(methoxymethyl)acetamide]. Preemergence or
 preplant incorporated herbicide mixtures were applied at common usage rates and
 compared for their effects on weed cover, weed species stability, and grain
 production. All plots were essentially weed-free the first year. Weed cover in
 most treatments increased significantly by the second year with fall panicum
 (Panicum dichotomiflorum Michx.) dominating the flora in Years 2 and 3, and
 smooth pigweed (Amaranthus hybridus L.) dominating in Years 4 and 5. Smooth
 pigweed reached densities of 85% in several treatments. Fall panicum was the
 dominant weed in pre-plant incorporated treatments that contained atrazine [6-
 chloro-N-ethyl-N'-(1-methylethyl)-1,3,5-triazine-2,4-diamine] plus a
 carbamothioate herbicide. Grain yields were negatively correlated with fall
 panicum densities in the second year in all herbicide treatments. Smooth
 pigweed densities were negatively correlated with grain yields in the fifth
 year in all preemergence treatments. Smooth pigweed densities were lower in
 triazine plus alachlor treatments than in double triazine treatments for the
 last 2 yr of the study.
 
 
 55                                                    NAL Call. No.: 56.8 J822
 Costs of conventional and conservation tillage systems.
 Weersink, A.; Walker, M.; Swanton, C.; Shaw, J.E.
 Ankeny, Iowa : Soil and Water Conservation Society of America; 1992 Jul.
 Journal of soil and water conservation v. 47 (4): p. 328-334; 1992 Jul.
 Includes references.
 
 Language:  English
 
 Descriptors: Ontario; Zea mays; Glycine max; Clay soils; Clay loam soils; Sandy
 soils; Farm size; Cost analysis; Chiselling; Ridging; No-tillage;
 Plowing; Conservation tillage; Comparisons; Total costs; Farm inputs; Farm
 machinery; Labor costs; Labor requirements; Variable costs; Herbicides;
 Seasonal variation
 
 
 56                                                     NAL Call. No.: SB249.N6
 Cotton ridge-till and minimum tillage systems in Southeast Missouri.
 Ayers, V.H.; Albers, D.W.
 Memphis, Tenn. : National Cotton Council of America; 1993.
 Proceedings - Beltwide Cotton Conferences. p. 503-504; 1993.  Meeting held
 January 10-14, 1993, New Orleans, Louisiana.  Includes references.
 
 Language:  English
 
 Descriptors: Missouri; Gossypium hirsutum; Ridging; Tillage
 
 
 57                                                     NAL Call. No.: SB249.N6
 Cotton root growth in conventional vs reduced tillage systems.
 Lawlor, D.J.; Landivar, J.A.; Vasek, J.; Crenshaw, C.
 Memphis, Tenn. : National Cotton Council of America; 1991.
 Proceedings - Beltwide Cotton Conferences v. 2: p. 817-819; 1991.  Paper
 presented at the "Cotton Physiology Conference," 1991, San Antonio, Texas.
 Includes references.
 
 Language:  English
 
 Descriptors: Texas; Gossypium hirsutum; Roots; Growth; Tillage; Minimum
 tillage; Crop yield
 
 
 58                                                    NAL Call. No.: 100 M69MI
 Crimson clover benefits soil, crops, and producers.
 Broadway, R.
 Mississippi State, Miss. : The Station; 1991 Dec.
 MAFES research highlights - Mississippi Agricultural and Forestry Experiment
 Station v. 54 (12): p. 7; 1991 Dec.
 
 Language:  English
 
 Descriptors: Trifolium incarnatum; Nitrogen; Nitrogen fixation; Cover crops;
 Zea mays; Production costs; No-tillage
 
 
 59                                                  NAL Call. No.: S592.7.A1S6
 Crop mulch effects on Rhizoctonia soil infestation and disease severity in
 conservation-tilled cotton.
 Rickerl, D.H.; Curl, E.A.; Touchton, J.T.; Gordon, W.B.
 Exeter : Pergamon Press; 1992 Jun.
 Soil biology and biochemistry v. 24 (6): p. 553-557; 1992 Jun.  Includes
 references.
 
 Language:  English
 
 Descriptors: Alabama; Gossypium; Vicia villosa; Trifolium incarnatum; Mulches;
 Rotations; Fallow; Rhizoctonia solani; Fungal diseases; Conservation tillage;
 Crop damage; Emergence; Survival; Soil fungi; Infestation; Population density;
 Virulence; Inoculum density; Crop residues; Seasonal variation; Soil
 temperature; Paleudults; Coastal plain soils; Sandy loam soils
 
 Abstract:  Vetch (Vicia villosa Roth), clover (Trifolium incarnatum L.), and
 fallow (no winter cover crop) were used as mulch crops preceding cotton
 planted in a conservation tillage system. In field tests, cotton emergence and
 survival were reduced in legume mulches with significant differences at the
 second planting in 1985. Assessments of Rhizoctonia soil infestation estimated
 using a modified stem trap baiting procedure, indicated higher amounts of
 Rhizoctonia in cotton following legume crops than in cotton following fallow.
 In greenhouse studies, comparisons of warm (29 +/- 2 degrees C day and 21 +/-2
 degrees C night) and cool (29 +/- 2 degrees C day and 10 +/- 2 degrees C night)
 temperature regimes imposed on the clover, vetch and fallow treatments,
 demonstrated that the cool temperature regime significantly reduced emergence
 and survival of cotton seedlings. However, there was no interaction of
 cropping treatments (legume cropped or fallowed treatments with temperature
 regimes). Cotton seedling disease severity in the greenhouse assay of
 field-collected soil samples showed a significant interaction among year, soil
 treatment and temperature.
 
 
 60                                               NAL Call. No.: aS604.C76 1992
 Crop residue management Minnesota job sheet-crop residue use and conservation
 tillage..  Minnesota job sheet-crop residue use and conservation tillage
 United States, Soil Conservation Service
 St. Paul, Minn. : USDA Soil Conservation Service,; 1992; A 57.2:M 66/5.
 [4] p. : col. ill. ; 28 cm.  Caption title.  Shipping list no.: 92-0464-P. June
 1992.
 
 Language:  English; English
 
 Descriptors: Crop residue management; Crop residues; Soil conservation
 
 
 61                                             NAL Call. No.: aS624.I8C76 1992
 Crop residue systems for conservation and profit.
 United States, Soil Conservation Service
 Des Moines, Iowa : The Service,; 1992.
 15 p. : ill. (some col.) ; 28 cm.  Cover title.  October, 1992.
 
 Language:  English
 
 Descriptors: Crop residue management; Conservation tillage
 
 
 62                                                      NAL Call. No.: 4 AM34P
 Crop rotation and tillage effects on corn growth and soil structural
 stability.
 Raimbault, B.A.; Vyn, T.J.
 Madison, Wis. : American Society of Agronomy; 1991 Nov.
 Agronomy journal v. 83 (6): p. 979-985; 1991 Nov.  Includes references.
 
 Language:  English
 
 Descriptors: Ontario; Zea mays; Rotations; Medicago sativa; Hordeum vulgare;
 Triticum aestivum; Trifolium pratense; Continuous cropping; Sequential
 cropping; Intercropping; Tillage; Minimum tillage; Crop yield; Grain; Growth
 rate; Soil structure; Aggregates; Stability; Long term experiments
 
 Abstract:  Increasing concerns about soil degradation with continuous corn (Zea
 mays L.) production and a scarcity of scientific information regarding corn
 grown in rotation with the diversity of crops produced in Ontario,
 prompted a long term study on the effect of various crop rotations and their
 interaction with two tillage systems on corn growth and soil structure. Eight
 rotations were established in 1980 which included continuous corn, six
 rotations comprised of 2 yr of corn following 2 yr of another crop or crop
 sequence, and continuous alfalfa (Medicago sativa L.). Each rotation was
 divided into either conventional tillage (fall moldboard plow) or minimum
 tillage (fall chisel plow). First-year corn grown in rotation yielded 3.9% more
 than continuous corn for conventional tillage and 7.9% more than
 continuous corn for minimum tillage. These corn responses to rotation were
 smaller than most of those reported in the literature. When barley (Hordeum
 vulgare L.) or wheat (Triticum aestivum L.) were the preceding crops,
 interseeding red clover (Trifolium pratense L.) increased first year corn
 yields only on conventionally tilled plots. Corn plant development was
 consistently slower with minimum tillage compared to conventional tillage.
 Yields were significantly lower with minimum tillage for continuous corn and
 where corn followed wheat interseeded with red clover. Little or no response to
 rotation was observed in second-year corn. The seedbed with continuous corn had
 a lower proportion of fine aggregates compared to corn grown in rotation. In
 most years soil aggregate stability was highest under continuous alfalfa and
 including a legume (whether alfalfa or interseeded red clover) in the rotation
 improved aggregate stability compared to continuous corn.
 
 
 63                                                    NAL Call. No.: 56.8 J822
 Crop sequences and conservation tillage to control irrigation furrow erosion
 and increase farmer income.
 Carter, D.L.; Berg, R.D.
 Ankeny, Iowa : Soil and Water Conservation Society of America; 1991 Mar.
 Journal of soil and water conservation v. 46 (2): p. 139-142; 1991 Mar.
 Includes references.
 
 Language:  English
 
 Descriptors: Conservation tillage; Furrows; Erosion; Furrow irrigation;
 Sequential cropping; Research
 
 
 64                                                   NAL Call. No.: S539.5.J68
 Crop yields and economic returns accompanying the transition to alternative
 farming systems.
 Smolik, J.D.; Dobbs, T.L.
 Madison, Wis. : American Society of Agronomy; 1991 Apr.
 Journal of production agriculture v. 4 (2): p. 153-161; 1991 Apr.  Includes
 references.
 
 Language:  English
 
 Descriptors: South Dakota; Northern plains states of U.S.A.; Farming systems;
 Organic farming; Crop yield; Tillage; Ridging; Minimum tillage; Rowcrops; Field
 crops; Grain crops; Rotations; Herbicides; Fertilizers; Precipitation; Economic
 evaluation; Returns; Profits; Farm income; Production costs;
 Comparisons
 
 
 65                                                     NAL Call. No.: S590.S65
 Cropping systems effects of a newly-cleared ultisol in Southern Nigeria.
 Lal, R.; Ghuman, B.S.; Shearer, W.
 Cremlingen-Destedt, W. Ger. : CATENA Verlag; 1992 Mar.
 Soil technology v. 5 (1): p. 27-38; 1992 Mar.  Includes references.
 
 Language:  English
 
 Descriptors: Nigeria; Ultisols; Humid tropics; Acid soils; Manihot esculenta;
 Elaeis guineensis; Musa; Root crops; Grain crops; Cropping systems; Alley
 cropping; Traditional farming; Tropical rain forests; Land clearance; Erosion;
 Earthworms; Biological activity in soil; Crop production; Crop yield; Dry
 season; Wet season; Rain; Temporal variation; Runoff; Infiltration;
 No-tillage; Soil structure; Land productivity; Soil fertility; Sustainability
 
 
 66                                                  NAL Call. No.: 100 OK4 (3)
 Cultural control of greenbugs.
 Burton, R.L.; Burd, J.D.
 Stillwater, Okla. : The Station; 1991 May.
 Miscellaneous publication - Agricultural Experiment Station, Oklahoma State
 University (132): p. 262; 1991 May.  In the series analytic: Aphid-Plant
 Interaction: Populations to Molecules / edited by D.C. Peters, J.A. Webster,
 and C.S. Chlouber. Paper presented at a symposium held August 12-17, 1990,
 Stillwater, Oklahoma.  Includes references.
 
 Language:  English
 
 Descriptors: Texas; Nebraska; Schizaphis graminum; Insect control; Cultural
 control; No-tillage
 
 
 67                                                    NAL Call. No.: SB610.W39
 Decreasing rates of nonselective herbicides in double-crop no-till soybeans
 (Glycine max).
 Moseley, C.M.; Hagood, E.S. Jr
 Champaign, Ill. : The Society; 1991 Jan.
 Weed technology : a journal of the Weed Science Society of America v. 5 (1): p.
 198-201; 1991 Jan.  Includes references.
 
 Language:  English
 
 Descriptors: Virginia; Glycine max; Double cropping; No-tillage; Weed control;
 Chemical control; Chlorimuron; Linuron; Glyphosate; Paraquat; Herbicide
 mixtures; Digitaria sanguinalis; Application rates
 
 
 68                                                 NAL Call. No.: 275.29 IO9PA
 Demonstration of how fertilizer placement interacts with root growth.
 Kaspar, T.C.; Cruse, R.M.; Timmons, D.R.
 Ames, Iowa : The Service; 1991 Jan.
 PM - Iowa State University, Cooperative Extension Service (1417): p. 63-68;
 1991 Jan.  In the series analytic: Integrated Farm Management Demonstration
 Program. 1990 Progress Report.
 
 Language:  English
 
 Descriptors: Iowa; Nitrogen fertilizers; Conservation tillage; Liquid
 fertilizer distributors; Crop yield
 
 
 69                                                     NAL Call. No.: S671.A66
 Design and performance of a bed-forming machine for controlled-traffic
 no-tillage system.
 Morrison, J.E. Jr
 St. Joseph, Mich. : American Society of Agricultural Engineers; 1992 Mar.
 Applied engineering in agriculture v. 8 (2): p. 179-182; 1992 Mar.  Includes
 references.
 
 Language:  English
 
 Descriptors: Texas; Farm machinery; Structural design; Performance; Land
 forming; Raised beds; No-tillage; Clay soils; Conservation tillage
 
 Abstract:  An experimental bed-forming machine was designed and developed for
 the operational conditions of controlled-traffic, tillage, cropping systems on
 the Texas Blackland Prairie. The machine was front mounted on a
 two-wheel-drive tractor to cut two spaced furrows and form raised wide beds
 when initiating such a tillage and cropping system. Subsequent rebedding was
 conducted after one or more cropping years, when the soil was covered with crop
 residues. The experimental machine was satisfactory in difficult clay soils.
 Alternative furrow plows could be used for other soil conditions.
 
 
 70                                                     NAL Call. No.: 56.9 SO3
 Differential phosphorus retention in soil profiles under no-till crop
 production.
 Guertal, E.A.; Eckert, D.J.; Traina, S.J.; Logan, T.J.
 Madison, Wis. : The Society; 1991 Mar.
 Soil Science Society of America journal v. 55 (2): p. 410-413; 1991 Mar.
 Includes references.
 
 Language:  English
 
 Descriptors: Ohio; Zea mays; Phosphorus; Soil chemistry; Soil fertility;
 No-tillage; Extraction; Field tests; Sorption
 
 Abstract:  Field trials in Ohio have shown that the Bray-1 P soil-test level
 for optimum corn (Zea mays L.) production is greater for no-till than for
 conventionally (moldboard plow) tilled corn. Studies using Hoytville silty clay
 loam (fine, illitic, mesic Mollic Ochraqualf) and Canfield silt loam (fine-
 loamy, mixed, mesic Aquic Fragiudalf) taken from long-term no-tillage plots
 indicated decreased retention of P against the Bray-1 extractant in surface
 soils, compared with samples from deeper within the soil profile. In an effort
 to further examine the P-retention characteristics of no-till soil profiles,
 experiments were prepared using P-sorption isotherms, before and after a series
 of sequential anion resin extractions. Prior to sequential extractions, the
 isotherms showed decreased sorption of P at the soil surface (0-2 cm), compared
 with deeper soil layers. Resin extraction removed more P from surface layers
 than deeper depths, and the quantity of P removed with each extraction declined
 much more quickly in the surface layers than in lower depths. After resin
 extraction there was a trend for greater retention of P against the Bray-1
 extractant in the upper soil layers. Sorption isotherms created after resin
 extraction show increased P sorption at all depths and closer agreement between
 the shape of the isotherm curves. It appears that accumulated P on the soil
 surface saturates P fixation sites, resulting in differential retention of P
 with depth.
 
 
 71                                                    NAL Call. No.: SB610.W39
 Directed sprayer for targeting pesticides.
 Morrison, J.E. Jr; Chandler, J.M.
 Champaign, Ill. : The Society; 1992 Apr.
 Weed technology : a journal of the Weed Science Society of America v. 6 (2): p.
 441-444; 1992 Apr.  Includes references.
 
 Language:  English
 
 Descriptors: Rowcrops; No-tillage; Conservation tillage; Pesticides;
 Application methods; Sprayers
 
 
 72                                                     NAL Call. No.: QL461.G4
 Diurnal abundance and spatial distribution of armyworm, (Lepidoptera:
 Noctuidae) in no-till corn.
 Laub, C.A.; Luna, J.M.
 Tifton, Ga. : Georgia Entomological Society; 1991 Apr.
 Journal of entomological science v. 26 (2): p. 261-266; 1991 Apr.  Includes
 references.
 
 Language:  English
 
 Descriptors: Virginia; Zea mays; Mythimna unipuncta; Diurnal activity; Spatial
 distribution; Feeding behavior; Sampling; No-tillage
 
 
 73                                                       NAL Call. No.: S79.E8
 Doublecropping systems for soybean and beef production.
 Hovermale, C.H.; Davis, J.D.; St. Louis, D.G.
 Mississippi State, Miss. : The Station; 1992 Apr.
 Technical bulletin - Mississippi Agricultural and Forestry Experiment Station
 (181): 8 p.; 1992 Apr.  Includes references.
 
 Language:  English
 
 Descriptors: Mississippi; Glycine max; Beef cattle; Double cropping; Grazing;
 No-tillage; Aerial sowing; Crop yield; Stocking rate
 
 
 74                                                    NAL Call. No.: SB610.W39
 Early preplant atrazine and metolachlor in conservation tillage corn (Zea
 mays).
 Buhler, D.D.
 Champaign, Ill. : The Society; 1991 Jan.
 Weed technology : a journal of the Weed Science Society of America v. 5 (1): p.
 66-71; 1991 Jan.  Includes references.
 
 Language:  English
 
 Descriptors: Wisconsin; Zea mays; Weed control; Chemical control; Atrazine;
 Metolachlor; Preplanting treatment; Application methods; Timing; No-tillage;
 Chiselling; Conservation tillage; Abutilon theophrasti; Setaria faberi
 
 
 75                                                    NAL Call. No.: SB610.W39
 Early season herbicide applications for weed control in stale seedbed soybean
 (Glycine max).
 Bruff, S.A.; Shaw, D.R.
 Champaign, Ill. : The Society; 1992 Jan.
 Weed technology : a journal of the Weed Science Society of America v. 6 (1): p.
 36-44; 1992 Jan.  Includes references.
 
 Language:  English
 
 Descriptors: Mississippi; Glycine max; Weed control; Chemical control; Cassia
 obtusifolia; Ipomoea lacunosa; Sesbania exaltata; Chlorimuron; Glyphosate;
 Imazaquin; Metribuzin; Paraquat; Conservation tillage; Application date; Crop
 yield
 
 
 76                                                  NAL Call. No.: SB610.2.B74
 Ecofallow and winter wheat weed control with UCC C4243.
 Bell, A.R.; Walz, A.W.; Joy, D.N.
 Surrey : BCPC Registered Office; 1991.
 Brighton Crop Protection Conference-Weeds v. 2: p. 807-812; 1991.  Conference
 held November 18-21, 1991, Brighton, England.
 
 Language:  English
 
 Descriptors: Triticum aestivum; Amaranthus retroflexus; Kochia scoparia; Weed
 control; Herbicides; No-tillage
 
 
 77                                                      NAL Call. No.: 450 C16
 Economic analysis of alternative cropping systems for a bean/wheat rotation on
 light-textured soils.
 Yiridoe, E.K.; Weersink, A.; Roy, R.C.; Swanton, C.J.
 Ottawa : Agricultural Institute of Canada; 1993 Apr.
 Canadian journal of plant science; Revue canadienne de phytotechnie v. 73 (2):
 p. 405-415; 1993 Apr.  Includes references.
 
 Language:  English
 
 Descriptors: Ontario; Triticum aestivum; Glycine max; Phaseolus vulgaris; No-
 tillage; Tillage; Rotations; Sandy loam soils; Crop yield; Returns;
 Production costs; Cover crops; Secale cereale; Zea mays
 
 
 78                                                     NAL Call. No.: 100 L939
 An economic analysis of reduced tillage cotton production.
 Paxton, K.W.; Lavergne, D.R.
 Baton Rouge, La. : The Station; 1991.
 Louisiana agriculture - Louisiana Agricultural Experiment Station v. 34 (4): p.
 8-9; 1991.
 
 Language:  English
 
 Descriptors: Louisiana; Gossypium; Minimum tillage; Economic analysis; Crop
 production
 
 
 79                                                     NAL Call. No.: SB249.N6
 Economic analysis of ridge-till and minimum till systems in Missouri.
 Reinbott, D.
 Memphis, Tenn. : National Cotton Council of America; 1993.
 Proceedings - Beltwide Cotton Conferences. p. 505-507; 1993.  Meeting held
 January 10-14, 1993, New Orleans, Louisiana.  Includes references.
 
 Language:  English
 
 Descriptors: Missouri; Ridging; Minimum tillage; Economic analysis
 
 
 80                                                    NAL Call. No.: 281.8 C16
 Economic comparison of alternative tillage systems under risk.
 Weersink, A.; Walker, M.; Swanton, C.; Shaw, J.
 Ottawa : Canadian Agricultural Economics and Farm Management Society; 1992 Jul.
 Canadian journal of agricultural economics; Revue Canadienne d'economie rurale
 v. 40 (2): p. 199-217; 1992 Jul.  Includes references.
 
 Language:  English
 
 Descriptors: Ontario; Maize; Soybeans; Cash crops; Tillage; No-tillage;
 Chiselling; Production costs; Farm comparisons; Risk; Ranking; Farm income;
 Farm size; Soil types; Stochastic processes; Conservation tillage; Alternative
 farming; Ridging; Crop yield; Zea mays; Glycine max
 
 
 81                                                   NAL Call. No.: S539.5.J68
 An economic comparison of the wheat-fallow and wheat-sorghum-fallow cropping
 systems.
 Norwood, C.A.; Dhuyvetter, K.C.
 Madison, WI : American Society of Agronomy, c1987-; 1993 Apr.
 Journal of production agriculture v. 6 (2): p. 261-266; 1993 Apr.  Includes
 references.
 
 Language:  English
 
 Descriptors: Kansas; Cabt; Triticum aestivum; Sorghum bicolor; Crop yield;
 Fallow; Rotations; Minimum tillage; No-tillage; Economic analysis; Acreage;
 Production costs; Deficiency payments; Federal programs; Returns
 
 
 82                                                     NAL Call. No.: 79.8 W41
 The economics of alternative tillage systems, crop rotations, and herbicide use
 on three representative East-Central Corn Belt farms.
 Martin, M.A.; Schreiber, M.M.; Riepe, J.R.; Bahr, J.R.
 Champaign, Ill. : Weed Science Society of America; 1991 Apr.
 Weed science v. 39 (2): p. 299-307; 1991 Apr.  Includes references.
 
 Language:  English
 
 Descriptors: Indiana; Triticum aestivum; Zea mays; Glycine max; Cost benefit
 analysis; Conservation tillage; Sustainability; Integrated pest management;
 Alternative farming; Farm income; Farm inputs; Herbicides; Weed control;
 Rotations; Farm size; No-tillage; Farm results; Crop yield; Continuous
 cropping; Chiselling; Mathematical models; Linear programming
 
 Abstract:  A linear programming model was used to determine which crop
 rotations and weed management systems result in the highest net farm income for
 each of three farm sizes (120, 240, and 480 hectares) under alternative tillage
 systems. Test plot data for the years 1981 through 1988 from the
 Purdue University Agronomy Farm, which has highly productive, well-drained
 soils, were analyzed. Net incomes for no-till tillage systems on all farms in
 the model were consistently and significantly lower than incomes for moldboard
 and chisel plow tillage systems due to slightly lower yields and substantially
 higher herbicide costs. Generally, net farm incomes were slightly higher with a
 moldboard plow versus chisel plow tillage system. Also, as farm size
 increased, per hectare net incomes increased. About 80% of the time under
 moldboard or chisel plow tillage systems, the model chose as optimal the
 lowest of three herbicide application rates. A corn/soybean rotation was
 chosen as optimal on 56% of the farm area analyzed, versus 25% for continuous
 corn and 13% for a corn/soybean/wheat rotation.
 
 
 83                                                     NAL Call. No.: SB249.N6
 Economics of reduced tillage cotton production systems in Louisiana.
 Paxton, K.W.; Lavergne, D.R.
 Memphis, Tenn. : National Cotton Council of America; 1991.
 Proceedings - Beltwide Cotton Conferences v. 1: p. 400-401; 1991.  Paper
 presented at the "Cotton Economics and Marketing Conference," 1991, San
 Antonio, Texas.  Includes references.
 
 Language:  English
 
 Descriptors: Louisiana; Gossypium hirsutum; Crop production; Minimum tillage;
 Cost benefit analysis
 
 
 84                                                    NAL Call. No.: SB610.W39
 Effect of 2,4-D and dicamba residues on following crops in conservation
 tillage systems.
 Moyer, J.R.; Bergen, P.; Schaalje, G.B.
 Champaign, Ill. : The Society; 1992 Jan.
 Weed technology : a journal of the Weed Science Society of America v. 6 (1): p.
 149-155; 1992 Jan.  Includes references.
 
 Language:  English
 
 Descriptors: Hordeum vulgare; Triticum aestivum; Lens culinaris; Pisum
 sativum; Brassica napus; Rotations; Medicago sativa; Conservation tillage; Weed
 control; Chemical control; Herbicide residues; 2,4-d; Dicamba;
 Glyphosate; Residual effects; Application date; Phytotoxicity; Crop damage;
 Spring; Sowing date; Crop yield
 
 
 85                                                   NAL Call. No.: QH84.8.B46
 Effect of different soil cultivation systems, including no-tillage, on
 electro-ultrafiltration extractable organic nitrogen.
 Hutsch, B.; Mengel, K.
 Berlin ; a Secaucus, N.J. : Springer International, 1985-; 1993.
 Biology and fertility of soils v. 16 (3): p. 233-237; 1993.  Includes
 references.
 
 Language:  English
 
 Descriptors: Cultivation; No-tillage; Mineralization; Nitrogen; Soil
 fertility; Soil organic matter; Ultrafiltration
 
 
 86                                                 NAL Call. No.: 275.29 IO9PA
 Effect of different tillage systems on energy conservation.
 Cruse, R.M.; Colvin, T.S.; Musselman, A.
 Ames, Iowa : The Service; 1992 Jan.
 PM - Iowa State University, Cooperative Extension Service (1467): p. 11-16;
 1992 Jan.  In the series analytic: Integrated farm management demonstration
 program--1991 progress report.
 
 Language:  English
 
 Descriptors: Iowa; Conservation tillage; Energy conservation; Erosion; Crop
 yield; Crop residues
 
 
 87                                                 NAL Call. No.: 275.29 IO9PA
 Effect of different tillage systems on energy conservation.
 Cruse, R.M.; Colvin, T.S.
 Ames, Iowa : The Service; 1991 Jan.
 PM - Iowa State University, Cooperative Extension Service (1417): p. 19-22;
 1991 Jan.  In the series analytic: Integrated Farm Management Demonstration
 Program. 1990 Progress Report.
 
 Language:  English
 
 Descriptors: Iowa; Conservation tillage; Energy conservation; Demonstration
 farms; Tillage; Yields
 
 
 88                                                     NAL Call. No.: QL461.G4
 Effect of disk harrowing on subsequent emergence of Hessian fly (Diptera:
 Cecidomyiidae) adults from wheat stubble.
 Zeiss, M.R.; Brandenburg, R.L.; Van Duyn, J.W.
 Griffin, Ga. : Georgia Entomological Society; 1993 Jan.
 Journal of entomological science v. 28 (1): p. 8-15; 1993 Jan.  Includes
 references.
 
 Language:  English
 
 Descriptors: North Carolina; Triticum aestivum; Glycine max; Mayetiola
 destructor; Insect control; Stubble; Disc harrows; Tillage; No-tillage
 
 
 89                                                     NAL Call. No.: S590.C63
 Effect of nitrogen and nitrogen placement on no-till small grains: plant
 nitrogen relationships.
 Jackson, G.D.; Kushnak, G.D.; Berg, R.K.; Carlson, G.R.
 New York, N.Y. : Marcel Dekker; 1992.
 Communications in soil science and plant analysis v. 23 (17/20): p. 2425-2435;
 1992.  In the Special Issue: International symposium on soil testing and plant
 analysis in the global community. Paper presented at the second international
 symposium, August 22-27, 1991, Orlando, Florida.  Includes references.
 
 Language:  English
 
 Descriptors: Montana; Triticum aestivum; Hordeum vulgare; No-tillage; Nitrogen
 fertilizers; Application rates; Placement; Nitrogen; Soil testing; Nutrient
 uptake; Protein content; Grain; Nutrient content
 
 
 90                                                     NAL Call. No.: S590.C63
 Effect of nitrogen and nitrogen placement on no-till small grains: plant yield
 relationships.
 Kushnak, G.D.; Jackson, G.D.; Berg, R.K.; Carlson, G.R.
 New York, N.Y. : Marcel Dekker; 1992.
 Communications in soil science and plant analysis v. 23 (17/20): p. 2437-2449;
 1992.  In the Special Issue: International symposium on soil testing and plant
 analysis in the global community. Paper presented at the second international
 symposium, August 22-27, 1991, Orlando, Florida.  Includes references.
 
 Language:  English
 
 Descriptors: Montana; Triticum aestivum; Hordeum vulgare; No-tillage;
 Continuous cropping; Soil testing; Nitrogen; Nutrient content; Nitrogen
 fertilizers; Use efficiency; Placement; Application rates; Crop yield
 
 
 91                                                    NAL Call. No.: QK867.J67
 Effect of several production factors on two varieties of rapeseed in the
 central United States.
 Yusuf, R.I.; Bullock, D.G.
 New York, N.Y. : Marcel Dekker; 1993.
 Journal of plant nutrition v. 16 (7): p. 1279-1288; 1993.  Includes
 references.
 
 Language:  English
 
 Descriptors: Illinois; Brassica napus; Ammonium nitrate; Application rates;
 Application date; Planting date; Tillage; Crop yield; Rapeseed oil; Nitrogen
 content; Lodging; Overwintering; Survival; Cultivars; Split dressings
 
 Abstract:  Two varieties of winter rapeseed (Brassica napus) (Cobra and
 Liborius) were planted at Brownstown, IL to evaluate the effect of planting
 date, nitrogen (N) rate, N application timing, and tillage on grain yield and
 oil content of the grain, grain moisture, plant lodging, winter survival, and
 plant N content. Results indicated that planting rapeseed approximately one to
 two weeks prior to winter wheat in this region is preferable to planting
 earlier. Grain yield showed a significant linear increase with delayed
 planting date from 25 August to 24 September. Grain yield also increased
 quadratically with increasing N rate (with an optimum of about 250 kg N/ha) and
 increased (0.15 Mg/ha) due to splitting the N fertilizer into two even
 applications. An increase in grain yield was accompanied by an increase in
 grain moisture with Liborius (late maturing) having significantly greater grain
 moisture than Cobra. Winter survival increased linearly with delayed planting
 date but, was accompanied by a significant quadratic increase in plant lodging.
 Chisel, as compared to disk tillage, increased plant lodging slightly, but
 decreased winter survival slightly. Neither delayed planting, N rate, nor
 splitting of spring N affected oil content. Liborius produced
 significantly more oil than did Cobra.
 
 
 92                                                  NAL Call. No.: S592.7.A1S6
 Effect of soil compaction on activity and biomass of endogeic lumbricids in
 arable soils.
 Sochtig, W.; Larink, O.
 Exeter : Pergamon Press; 1992 Dec.
 Soil biology and biochemistry v. 24 (12): p. 1595-1599; 1992 Dec.  In the
 special issue ISEE 4. Proceedings of the "4th International Symposium on
 Earthworm Ecology," June 11-15, 1990, Avignon, France / edited by A.
 Kretzschmar.  Includes references.
 
 Language:  English
 
 Descriptors: Germany; Aporrectodea caliginosa; Aporrectodea; Earthworms;
 Lumbricidae; Species; Soil compaction; Population density; Biomass; Biological
 activity in soil; Soil density; Farm machinery; Traffic; Triticum aestivum;
 Conservation tillage
 
 Abstract:  Between June 1988 and October 1989 the effect of soil compaction on
 abundance and biomass of active lumbricids was investigated in a longterm field
 experiment under spring-wheat and winter-barley. Seven plots were
 subjected to loads by agricultural machinery under conditions simulating three
 common kinds of agricultural practice and compared to an unloaded control plot
 (Table 1). The dominant species of the investigation area, Aporrectodea
 caliginosa and A. rosea (99.3% of total individual number) had their highest
 activity and biomass in the uncompact control plot. Lowest individual numbers
 were found in the extremely loaded wheel-track and the conservation tillage
 area. The extensive cultivation of this area began just at the start of the
 field experiment, so that a greater earthworm population had not had time to
 establish itself In pot experiments the activity of the endogeic species A.
 caliginosa was investigated in tripartioned soil columns (40 cm long X 19 cm
 wide), each differently compact to pore volumes (pv) of 37.5, 42.5, 47.5 and
 56%. A significantly higher activity, measured as the length and the number of
 the burrows visible from outside, was found in the lighter substrates. The
 volume number extent of earthworm burrows was as much as 2 times higher in the
 47.5 and 56% pv columns than in the more compact 42.5 and 37.5% pv columns.
 
 
 93                                                     NAL Call. No.: 79.8 W41
 Effect of straw, ash, and tillage on dissipation of imazaquin and imazethapyr.
 Monks, C.D.; Bank, P.A.
 Champaign, Ill. : Weed Science Society of America; 1993 Jan.
 Weed science v. 41 (1): p. 133-137; 1993 Jan.  Includes references.
 
 Language:  English
 
 Descriptors: Georgia; Cabt; Gossypium hirsutum; Imazaquin; Imazethapyr;
 Application rates; Persistence; Sandy loam soils; Silt loam soils; Straw
 burning; Ash; Tillage; No-tillage; Crop damage; Glycine max; Rotations
 
 Abstract:  Experiments were conducted on a Cedarbluff silt loam and a Cecil
 sandy loam to determine dissipation of imazaquin and imazethapyr as influenced
 by burning small-grain straw and tillage prior to soybean planting. Corn
 bioassay detection limits for imazaquin and imazethapyr in the Cedarbluff silt
 loam were 2.5 to 30 and 5 to 40 ppbw, respectively. Bioassay detection limits
 for imazaquin and imazethapyr in the Cecil sandy loam were 2.5 to 20 and 10 to
 40 ppbw, respectively. Imazaquin and imazethapyr activity was not detectable in
 soil by 110 to 152 d after treatment. Imazethapyr dissipation was not
 affected by burning or tillage in the Cedarbluff silt loam and dissipated more
 slowly in 1989 than imazaquin. Imazaquin dissipation in the Cedarbluff silt
 loam in 1988 was slower in burned plots than in nonburned plots but was not
 affected by burning in 1989. No differences were observed between imazaquin and
 imazethapyr dissipation in the Cecil sandy loam and neither burning or tillage
 influenced their rate of dissipation in either year. No-till-planted cotton was
 injured at both locations by imazaquin and imazethapyr that had been applied
 the previous year.
 
 
 94                                                     NAL Call. No.: 1.9 P69P
 Effect of three tillage practices on development of northern corn leaf blight
 (Exserohilum turcicum) under continuous corn.
 Pedersen, W.L.; Oldham, M.G.
 St. Paul, Minn. : American Phytopathological Society; 1992 Nov.
 Plant disease v. 76 (1): p. 1161-1164; 1992 Nov.  Includes references.
 
 Language:  English
 
 Descriptors: Illinois; Zea mays; Hybrids; Setosphaeria turcica; Blight;
 Continuous cropping; Conservation tillage; No-tillage; Virulence; Crop yield;
 Correlation; Lodging; Varietal reactions
 
 
 95                                                   NAL Call. No.: S539.5.J68
 Effect of tillage on cotton plant populations and seedling diseases.
 Colyer, P.D.; Vernon, P.R.
 Madison, Wis. : American Society of Agronomy; 1993 Jan.
 Journal of production agriculture v. 6 (1): p. 108-111; 1993 Jan.  Includes
 references.
 
 Language:  English
 
 Descriptors: Louisiana; Gossypium hirsutum; Seedlings; Conservation tillage;
 Tillage; Plant disease control; Chemical control; Aldicarb; Quintozene;
 Etridiazole; Crop establishment; Crop density; Vigor; Plant diseases;
 Incidence; Disease resistance; Crop yield; Seeds; Indexes; Seasonal variation
 
 
 96                                                     NAL Call. No.: 421 J822
 Effect of tillage practices and weed management on survival of stalk borer
 (Lepidoptera: Noctuidae) eggs and larvae.
 Levine, E.
 Lanham, Md. : Entomological Society of America; 1993 Jun.
 Journal of economic entomology v. 86 (3): p. 924-928; 1993 Jun.  Includes
 references.
 
 Language:  English
 
 Descriptors: Illinois; Zea mays; Seedlings; Papaipema nebris; Survival;
 Cultural control; Insect control; Tillage; Weed control; Weeds
 
 Abstract:  Increased use of conservation tillage by midwestern corn growers in
 the 1970s and 1980s has led to a greater incidence of problems with the stalk
 borer, Papaipema nebris (Guenee). In particular, serious infestations have
 occurred throughout entire fields where no-till is practiced. A 3-yr factorial
 experiment (1983-1986) assessed the effect of three tillage practices (fall
 moldboard plow and spring disk, fall chisel plow and spring disk, and no-till)
 at two levels of weed management (weed growth present or absent in spring) on
 the survival of stalk borer eggs and development of larvae from surviving eggs.
 Injury to corn was used as a relative measure of stalk borer survival. Egg
 masses were infested on or immediately adjacent to grassy weeds after harvest
 but before tillage operations took place. Winter wheat was sowed in the fall to
 supplement natural weed growth in the plots with no weed control. In plots with
 the high level of weed control, plant growth was controlled, as needed, with
 paraquat in spring before planting. In all three studies, the tillage X weed
 management interaction was not significant and the
 moldboard-plow treatment significantly decreased stalk borer damage when
 compared with the no-till treatment. The chisel-plow treatment was generally
 intermediate between the no-till treatment and the moldboard-plow treatment in
 reducing stalk borer damage. The absence of weed growth in spring tended to
 decrease infestations of larvae, although the difference in damage between the
 two levels of weed management was significant in only one of the study
 periods. In that period, the interval between predicted 50% stalk borer egg
 hatch and the one-leaf-stage of corn development was greater than that
 interval for the other two studies. Even with the burial of eggs by soil with
 the moldboard-plow treatment, some larvae successfully eclosed and survived to
 damage corn seedlings in two of the three studies, with or without the
 presence of weeds. Although the resul
 
 
 97                                                     NAL Call. No.: 79.8 W41
 Effect of tillage systems on the emergence depth of giant (Setaria faberi) and
 green foxtail (Setaria viridis).
 Buhler, D.D.; Mester, T.C.
 Champaign, Ill. : Weed Science Society of America; 1991 Apr.
 Weed science v. 39 (2): p. 200-203; 1991 Apr.  Includes references.
 
 Language:  English
 
 Descriptors: Setaria faberi; Setaria viridis; Weed biology; Cultural weed
 control; Conservation tillage; Plowing; Chiselling; Seedling emergence;
 Population density; Buried seeds; Depth
 
 Abstract:  The effect of tillage systems on depth of emergence and densities of
 giant and green foxtail under different environmental and cropping
 conditions were evaluated from 1985 to 1987 at Arlington, Hancock, and
 Janesville, WI. Mean emergence depths in no-till were the shallowest, followed
 by chisel plow and conventional tillage at each location. At least 40% of the
 giant and green foxtail plants emerged from the upper 1 cm of soil in no-till
 compared to about 25% in chisel plow and less than 15% in conventional
 tillage. As many as 25% of the plants emerged from greater than 4 cm in
 conventional tillage compared to about 10% in chisel plow and less than 5% in
 no-till. Seedlings emerged from greater depths in a loamy sand than in a silt
 loam soil regardless of tillage system. At Arlington, green foxtail was the
 dominant species in conventional tillage, while giant foxtail dominated in
 chisel plow and no-till. Foxtail densities were greater in chisel plow and no-
 till than in conventional tillage at all three locations.
 
 
 98                                                      NAL Call. No.: 450 C16
 Effect of vegetation suppression on the establishment of sod-seeded alfalfa in
 the Aspen Parkland.
 Bowes, G.G.; Zentner, R.P.
 Ottawa : Agricultural Institute of Canada; 1992 Oct.
 Canadian journal of plant science; Revue canadienne de phytotechnie v. 72 (4):
 p. 1349-1358; 1992 Oct.  Includes references.
 
 Language:  English
 
 Descriptors: Saskatchewan; Medicago sativa; Bromus inermis; Crop
 establishment; Crop yield; Glyphosate; Rotary cultivation; Economic analysis
 
 
 99                                                      NAL Call. No.: 450 C16
 Effectiveness and economics of repeated sequences of herbicides for Canada
 thistle (Cirsium arvense) control in reduced-till spring wheat (Triticum
 aestivum).
 Donald, W.W.; Prato, T.
 Ottawa : Agricultural Institute of Canada; 1992 Apr.
 Canadian journal of plant science; Revue canadienne de phytotechnie v. 72 (2):
 p. 599-618; 1992 Apr.  Includes references.
 
 Language:  English
 
 Descriptors: Canada; Triticum aestivum; Cirsium arvense; Bromoxynil;
 Chlorsulfuron; 2,4-d; Dicamba; Glyphosate; Mcpa; Application date; Herbicidal
 properties; Weed control
 
 
 100                                                   NAL Call. No.: SB193.F59
 Effects of coated seed on alfalfa stand density and yield in reduced tillage
 systems.
 Cosgrove, D.R.; Daley, P.E.; Koenig, L.G.; Ritten, T.J.
 Columbia, Mo. : American Forage and Grassland Council; 1991.
 Proceedings of the Forage and Grassland Conference. p. 166-170; 1991.  Meeting
 held April 1-4, 1991, Columbia, Missouri.  Includes references.
 
 Language:  English
 
 Descriptors: Medicago sativa; Stand establishment; Seed treatment; No-tillage;
 Plowing; Crop density; Crop yield
 
 
 101                                                    NAL Call. No.: 1.9 P69P
 Effects of crop rotation and residue management practices on severity of tan
 spot of winter wheat.
 Bockus, W.W.; Claassen, M.M.
 St. Paul, Minn. : American Phytopathological Society; 1992 Jun.
 Plant disease v. 76 (6): p. 633-636; 1992 Jun.  Includes references.
 
 Language:  English
 
 Descriptors: Kansas; Triticum aestivum; Winter wheat; Pyrenophora
 tritici-repentis; Fungal diseases; Plant disease control; Continuous cropping;
 Rotations; Sorghum bicolor; Plowing; Blade plowing; No-tillage; Chiselling;
 Discing; Crop residues; Virulence; Leaves; Symptoms; Epidemiology
 
 
 102                                                 NAL Call. No.: SB610.2.B74
 Effects of cultivation and seed shedding on the population dynamics of Galium
 aparine in winter wheat crops.
 Wilson, B.J.; Wright, K.J.
 Surrey : BCPC Registered Office; 1991.
 Brighton Crop Protection Conference-Weeds v. 2: p. 813-820; 1991.  Conference
 held November 18-21, 1991, Brighton, England.  Includes references.
 
 Language:  English
 
 Descriptors: Uk; Triticum aestivum; Galium aparine; Plant density; No-tillage;
 Cultivation; Herbicides; Weed control
 
 
 103                                                    NAL Call. No.: 1.9 P69P
 Effects of fallow and of summer and winter crops on survival of wheat
 pathogens in crop residues.
 Fernandez, M.R.; Fernandes, J.M.; Sutton, J.C.
 St. Paul, Minn. : American Phytopathological Society; 1993 Jul.
 Plant disease v. 77 (7): p. 698-703; 1993 Jul.  Includes references.
 
 Language:  English
 
 Descriptors: Rio grande do sul; Triticum; Gibberella zeae; Cochliobolus
 sativus; Leptosphaeria nodorum; Survival; Crop residues; Fallow; Sequential
 cropping; Conservation tillage; Incidence; Populations
 
 
 104                                       NAL Call. No.: HD1775.S8E262 no.91-1
 Effects of including alfalfa in whole-farm plans comparison of conventional,
 ridge till, and alternative farming systems.
 Mends, Clarence; Dobbs, Thomas L.
 South Dakota State University, Economics Dept
 Brookings, S.D. : Economics Dept., South Dakota State University,; 1991.
 ii, 21 p. : ill. ; 28 cm. (Eco nomics staff paper series ; no. 91-1.).  April
 1991.  Includes bibliographical references (p. 21).
 
 Language:  English
 
 Descriptors: Agricultural systems; Alternative agriculture; Alfalfa; Tillage
 
 
 105                                                     NAL Call. No.: 450 C16
 The effects of nitrogen, row spacing and seeding rate on the yield of flax
 under a zero-till production system.
 Lafond, G.P.
 Ottawa : Agricultural Institute of Canada; 1993 Apr.
 Canadian journal of plant science; Revue canadienne de phytotechnie v. 73 (2):
 p. 375-382; 1993 Apr.  Includes references.
 
 Language:  English
 
 Descriptors: Saskatchewan; Linum usitatissimum; No-tillage; Row spacing;
 Sowing rates; Crop density; Crop establishment; Crop yield; Ammonium nitrate;
 Ammonium phosphates; Application rates; Plant height
 
 
 106                                                  NAL Call. No.: S539.5.J68
 Effects of planting dates and tillage systems on the economics of hard red
 winter wheat production.
 Epplin, F.M.; Beck, D.E.; Krenzer, E.G. Jr; Heer, W.F.
 Madison, Wis. : American Society of Agronomy; 1993 Jan.
 Journal of production agriculture v. 6 (1): p. 57-62; 1993 Jan.  Includes
 references.
 
 Language:  English
 
 Descriptors: Oklahoma; Triticum aestivum; Sowing date; Tillage; No-tillage;
 Comparisons; Crop yield; Economic analysis; Risk
 
 
 107                                                  NAL Call. No.: QL461.E532
 Effects of strip intercropping and no-tillage on some pest and beneficial
 invertebrates of corn in Ohio.
 Tonhasca, A. Jr; Stinner, B.R.
 Lanham, Md. : Entomological Society of America; 1991 Oct.
 Environmental entomology v. 20 (5): p. 1251-1258; 1991 Oct.  Includes
 references.
 
 Language:  English
 
 Descriptors: Ohio; Zea mays; Agrotis ipsilon; Mythimna unipuncta; Slugs;
 Diabrotica virgifera; Ostrinia nubilalis; Intercropping; No-tillage; Predators
 of insect pests; Biological control agents
 
 Abstract:  We tested two agronomic practices that are likely to increase plant
 and structural diversity, no-tillage and strip intercropping, for effects on
 corn invertebrate fauna. Some of the most common herbivores and natural
 enemies were sampled by direct counts and damage estimation from 1988 through
 1990 on monoculture corn and strips of corn alternated with soybean, under no-
 tillage and conventional tillage. Among soil pests, cut-worms (mostly the black
 cutworm, Agrotis ipsilon (Hufnagel)); armyworm, Pseudaletia unipuncta
 (Haworth); and slugs (Gastropoda) were more abundant in no-tillage plots,
 although only slugs caused severe damage. The western corn rootworm,
 Diabrotica virgifera virgifera LeConte, and the European corn borer, Ostrinia
 nubitalis (Hubner), were generally more abundant in conventional tillage
 plots. Despite crop rotation, the strip-intercropping system (four rows of each
 crop) was less effective in reducing western corn rootworm infestation,
 especially in conventional tillage plots. In 1990 only, ladybugs (mostly
 Coleomegilla maculata (DeGeer)) were more abundant in conventional tillage
 plots, whereas tarnished plant bugs, Lygus lineolaris (Palisot de Beauvois),
 were more abundant in no-tillage plots. Japanese beetle, Popillia japonica
 Newman; stink bugs, Acrosternum hilare (Say) and Euschistus serous (Say); and
 spiders (Aranea) were not significantly affected by treatments.
 
 
 108                                                    NAL Call. No.: 79.8 W41
 Effects of tillage and application method on clomazone, imazaquin, and
 imazethapyr persistence.
 Curran, W.S.; Liebl, R.A.; Simmons, F.W.
 Champaign, Ill. : Weed Science Society of America; 1992 Jul.
 Weed science v. 40 (3): p. 482-489; 1992 Jul.  Includes references.
 
 Language:  English
 
 Descriptors: Illinois; Glycine max; Rotations; Zea mays; Weed control;
 Chemical control; Clomazone; Imazaquin; Imazethapyr; Persistence; Residual
 effects; Crop damage; Phytotoxicity; No-tillage; Minimum tillage; Plowing;
 Application methods
 
 Abstract:  Effects of tillage and herbicide application method on the
 persistence and residual activity of clomazone, imazaquin, and imazethapyr were
 investigated in a 2-yr field study. Herbicides were applied preemergence and
 preplant incorporated to conventional- and reduced-tillage soybeans in 1987 and
 1988. Herbicide dissipation was monitored using chromatographic and bioassay
 techniques. In 1987, dissipation rates for clomazone, imazaquin, and
 imazethapyr were similar, regardless of tillage system or application method.
 In 1988, all three herbicides applied preplant incorporated dissipated more
 slowly than in preemergence treatments. Corn planted in rotation in 1989
 displayed greater levels of injury in the incorporated treatments for all three
 herbicides. Although herbicide concentrations were similar 322 d
 following application in both tillage treatments in 1989, corn injury was
 greater with imazaquin and imazethapyr and less with clomazone in the
 reduced-tillage plots than in the conventional-tillage treatments.
 
 
 109                                                   NAL Call. No.: 79.8 W412
 Effects of tillage, application time and rate on metribuzin dissipation.
 Sorenson, B.A.; Shea, P.J.; Roeth, F.W.
 Oxford : Blackwell Scientific Publications; 1991 Dec.
 Weed research v. 31 (6): p. 335-345; 1991 Dec.  Includes references.
 
 Language:  English
 
 Descriptors: Nebraska; Glycine max; Zea mays; Triticum aestivum; Rotations;
 Weed control; Metribuzin; Application date; Application methods; Application
 rates; Tillage; No-tillage; Crop yield; Herbicide residues; Silt loam soils
 
 
 110                                                    NAL Call. No.: 79.8 W41
 Effects of tillage on vertical distribution and viability of weed seed in soil.
 Yenish, J.P.; Doll, J.D.; Buhler, D.D.
 Champaign, Ill. : Weed Science Society of America; 1992 Jul.
 Weed science v. 40 (3): p. 429-433; 1992 Jul.  Includes references.
 
 Language:  English
 
 Descriptors: Wisconsin; Chenopodium album; Annuals; Weeds; Seeds; Seed banks;
 Weed biology; Seed germination; Population dynamics; Spatial distribution;
 Tillage; No-tillage; Conservation tillage; Plowing
 
 Abstract:  The effect of different levels of tillage and weed management on
 population, distribution, and germination of weed seed was evaluated in three
 tillage systems at Arlington and Hancock, WI, in 1989 and 1990. Over 60% of all
 weed seed in the top 19 cm of soil were found in the top 1 cm in
 no-tillage at both sites. As depth increased, concentration of weed seed
 declined logarithmically in no-tillage. In chisel plowing, over 30% of seed
 were in the top 1 cm and seed concentration decreased linearly with depth.
 Moldboard plowing had uniform distribution of weed seed in the top 19 cm of
 soil. Preemergence metolachlor plus atrazine decreased weed seed population by
 50% compared with no treatment over all tillage systems. One year of the
 herbicide treatment plus handweeding to assure weed-free conditions did not
 reduce seed numbers in chisel plowing or moldboard plowing compared to
 herbicide alone. Seed numbers with no-tillage and weed-free conditions
 decreased by 40% relative to herbicide alone. Common lambsquarters germination
 was 40% greater in moldboard plowing and chisel plowing compared with
 no-tillage. Germination was highest in seed taken from 9 to 19 cm deep in
 moldboard plowing and from 0 to 9 cm deep in chisel plowing.
 
 
 111                                                     NAL Call. No.: 450 C16
 The effects of tillage systems on the economic performance of spring wheat,
 winter wheat, flax and field pea production in east-central Saskatchewan.
 Lafond, G.P.; Zentner, R.P.; Geremia, R.; Derksen, D.A.
 Ottawa : Agricultural Institute of Canada; 1993 Jan.
 Canadian journal of plant science; Revue canadienne de phytotechnie v. 73 (1):
 p. 47-54; 1993 Jan.  Includes references.
 
 Language:  English
 
 Descriptors: Saskatchewan; Pisum sativum; Linum usitatissimum; Triticum
 aestivum; Fallow systems; Minimum tillage; No-tillage; Rotations; Stubble
 cultivation; Sustainability; Cost benefit analysis
 
 
 112                                                  NAL Call. No.: S539.5.J68
 Effects of weed and invertebrate control on alfalfa establishment in oat
 stubble.
 Stout, W.L.; Byers, R.A.; Leath, K.T.; Bahler, C.C.; Hoffman, L.D.
 Madison, Wis. : American Society of Agronomy; 1992 Jul.
 Journal of production agriculture v. 5 (3): p. 349-352; 1992 Jul.  Includes
 references.
 
 Language:  English
 
 Descriptors: Pennsylvania; Medicago sativa; Crop establishment; Avena sativa;
 Stubble; Conservation; No-tillage; Pest control; Weeds; Slugs; Insect pests;
 Seeds; Seedlings; Growth analysis
 
 
 113                                                    NAL Call. No.: 79.8 W41
 Efficiency and economics of herbicides for Canada thistle (Cirsium arvense)
 control in no-till spring wheat (Triticum aestivum).
 Donald, W.W.; Prato, T.
 Champaign, Ill. : Weed Science Society of America; 1992 Apr.
 Weed science v. 40 (2): p. 233-240; 1992 Apr.  Includes references.
 
 Language:  English
 
 Descriptors: Triticum aestivum; No-tillage; Weed control; Chemical control;
 Cirsium arvense; Chlorsulfuron; Clopyralid; 2,4-d; Mcpa; Bromoxynil; Herbicide
 mixtures; Application rates; Perennial weeds; Adventitious roots; Buds; Cost
 benefit analysis; Returns
 
 Abstract:  The objective of this field research was to compare relative
 effectiveness and profitability of alternative herbicides applied to the same
 plots for four consecutive years for controlling and reducing dense Canada
 thistle infestations in no-till spring wheat. Chlorsulfuron at 30 g ai ha-1
 plus nonionic surfactant or clopyralid plus 2,4-D at 70 plus 280 g ae ha-1,
 respectively, applied annually for 4 yr controlled Canada thistle and was more
 effective for gradually reducing Canada thistle stands than 2,4-D at 560 g ae
 ha-1, MCPA plus bromoxynil at 280 plus 280 g ae ha-1, or tribenuron at 20 g ai
 ha-1. Chlorsulfuron and clopyralid plus 2,4-D also controlled Canada thistle
 greater than or equal to 90% earlier (by 2 yr) than other treatments.
 Stochastic dominance analysis, a form of economic analysis, predicted that
 either chlorsulfuron or clopyralid plus 2,4-D would be preferred by farmers to
 the untreated check, MCPA plus bromoxynil, or 2,4-D treatments. Chlorsulfuron
 also would be preferred to clopyralid plus 2,4-D by risk-neutral farmers,
 whereas clopyralid plus 2,4-D would be preferred to chlorsulfuron by highly
 risk-averse farmers, those who are most likely to pick only consistently
 effective herbicides.
 
 
 114                                                    NAL Call. No.: SB249.N6
 Energy utilization as affected by traffic in conservation and conventional
 tillage systems.
 Burt, E.C.; Reeves, D.W.; Raper, R.L.
 Memphis, Tenn. : National Cotton Council of America; 1992.
 Proceedings - Beltwide Cotton Production Research Conferences v. 1: p.
 502-504; 1992.  Includes references.
 
 Language:  English
 
 Descriptors: Gossypium; Energy consumption; Conservation tillage; Tillage
 
 
 115                                                    NAL Call. No.: S671.A66
 Enhancing soil conservation practice adoption with targeted educational
 programs.
 Dickey, E.C.; Shelton, D.P.; Jasa, P.J.
 St. Joseph, Mich. : American Society of Agricultural Engineers; 1991 Jan.
 Applied engineering in agriculture v. 7 (1): p. 91-96; 1991 Jan.  Includes
 references.
 
 Language:  English
 
 Descriptors: Nebraska; Soil conservation; Erosion; Conservation tillage;
 Educational programs
 
 Abstract:  Two independent, but closely related, grant funded educational
 programs were developed and implemented to reduce soil erosion in selected
 areas of eastern Nebraska. Traditional extension programming methods as well as
 other more non-traditional approaches were used extensively to enhance soil
 conservation practice adoption. In one program, encompassing 220 000 ha
 (540,000 acre) of cropland, annual soil erosion was reduced by 2.3 million t
 (2.5 million ton) and annual fuel savings of 1.5 million L (390,000 gal) were
 achieved through a reduction in the number of tillage operations. In the
 second project, more than 93 000 m (305,000 ft) of terraces were constructed,
 which resulted in an annual soil erosion reduction of 151 000 t (166,000 ton).
 These projects demonstrated that targeted conservation programs can be very
 effective.
 
 
 116                                                    NAL Call. No.: S590.S65
 Erosion risk assessment for soil conservation planning.
 Thomas, A.W.; Snyder, W.M.; Mills, W.C.; Dillard, A.L.
 Cremlingen-Destedt, W. Ger. : CATENA Verlag; 1991 Dec.
 Soil technology v. 4 (4): p. 373-389; 1991 Dec.  Includes references.
 
 Language:  English
 
 Descriptors: Georgia; Erosion; Risk; Assessment; Uncertainty; Soil
 conservation; Planning; Universal soil loss equation; Soil; Losses from soil
 systems; Seasonal variation; Probability; Climatic factors; Seasonal
 fluctuations; Probability analysis; Simulation; Glycine max; Monoculture;
 Fallow; Tillage; No-tillage; Conservation tillage; Coverage; Crop residues;
 Planting date
 
 
 117                                               NAL Call. No.: S561.6.A82E96
 Estimating 1993 production costs in Arkansas: soybeans--no-till, following
 wheat, loamy soils, flood irrigation.
 Windham, T.E.; Stuart, C.A.
 Fayetteville, Ark.?: The Service; 1992 Nov.
 Extension technical bulletin - UA Cooperative Extension Service (185): 8 p.;
 1992 Nov.
 
 Language:  English
 
 Descriptors: Arkansas; Glycine max; Production costs; Estimation; Farm
 budgeting; Loam soils; Flood irrigation; Triticum aestivum; No-tillage;
 Rotations
 
 
 118                                                     NAL Call. No.: S67.P82
 An evaluation of conservation tillage systems for cotton on the Macon Ridge.
 Baton Rouge, La.? : The Service; 1991 Dec.
 Publication - Louisiana Cooperative Extension Service (2460): 23 p.; 1991 Dec. 
 Includes references.
 
 Language:  English
 
 Descriptors: Louisiana; Gossypium hirsutum; Conservation tillage; Field tests;
 Crop yield; Cost benefit analysis; Herbicides; Insect control
 
 
 119                                                    NAL Call. No.: SB249.N6
 Evaluation of cotton growth in ridge till systems Southeast Missouri.
 Mobley, J.B.; Albers, D.W.
 Memphis, Tenn. : National Cotton Council of America; 1993.
 Proceedings - Beltwide Cotton Conferences. p. 508-509; 1993.  Meeting held
 January 10-14, 1993, New Orleans, Louisiana.
 
 Language:  English
 
 Descriptors: Missouri; Gossypium hirsutum; Ridging
 
 
 120                                         NAL Call. No.: NBULD3656 1992 B347
 Evaluation of opener and presswheel combinations on a no-till grain drill when
 seeding wheat..  University of Nebraska--Lincoln thesis : Agricultural
 Engineering
 Bahri, Abdeljabar
 1992; 1992.
 viii, 111 leaves : ill. (some col.) ; 28 cm.  Includes bibliographical
 references.
 
 Language:  English
 
 
 121                                                   NAL Call. No.: SB610.W39
 Fall-applied herbicides for Canada thistle (Cirsium arvense) root and root bud
 control in reduced-till spring wheat.
 Donald, W.W.
 Champaign, Ill. : The Society; 1992 Apr.
 Weed technology : a journal of the Weed Science Society of America v. 6 (2): p.
 252-261; 1992 Apr.  Includes references.
 
 Language:  English
 
 Descriptors: Triticum aestivum; Perennial weeds; Weed control; Chemical
 control; Cirsium arvense; Adventitious roots; Buds; Root systems; Dicamba;
 Bromoxynil; Chlorsulfuron; 2,4-d; Mcpa
 
 
 122                                                  NAL Call. No.: S539.5.J68
 Fallow method affects downy brome population in winter wheat.
 Tanaka, D.L.; Anderson, R.L.
 Madison, Wis. : American Society of Agronomy; 1992 Jan.
 Journal of production agriculture v. 5 (1): p. 117-119; 1992 Jan.  Paper
 presented at a symposium on "Ecology and Management of Grazing Systems"
 presented at the annual meeting of the American Association for the
 Advancement of Science, January 14-19, 1991, San Francisco, California.
 Includes references.
 
 Language:  English
 
 Descriptors: Montana; Triticum aestivum; Winter wheat; Bromus tectorum;
 Population change; Stubble mulching; Minimum tillage; No-tillage; Fallow
 
 
 123                                                    NAL Call. No.: 23 AU792
 Farming duplex soils: a farmer's perspective.
 Edwards, I.
 East Melbourne : Commonwealth Scientific and Industrial Research Organization;
 1992.
 Australian journal of experimental agriculture v. 32 (7): p. 811-814; 1992.
 Special issue: Crop production on duplex soils.  Includes references.
 
 Language:  English
 
 Descriptors: Western australia; Trifolium subterraneum; Triticum; Crop
 management; Duplex soils; Minimum tillage; Rotations; Sustainability; Weed
 control; Fungus control; Gaeumannomyces graminis; Crop yield
 
 
 124                                                NAL Call. No.: 100 SO82 (3)
 Farming system studies.
 Woodard, H.; Claypool, D.; Smolik, J.; Rickerl, D.
 Brookings, S.D. : The Station; 1991.
 TB - Agricultural Experiment Station, South Dakota State University (97): 3 p.
 (soil PR 90-13); 1991.
 
 Language:  English
 
 Descriptors: South Dakota; Rotations; Minimum tillage; Nutrient content
 
 
 125                                                NAL Call. No.: 100 SO82 (3)
 Farming systems, 1991: 1991 crop yields.
 Smolik, J.
 Brookings, S.D. : The Station; 1992 Oct.
 TB - Agricultural Experiment Station, South Dakota State University (99): 8 p.;
 1992 Oct.  In the series analytic: Soil science research in the Plant Science
 Department : 1991 Annual Report. Soil PR 91-4.
 
 Language:  English
 
 Descriptors: South Dakota; Farming systems research; Crop yield; Plant
 diseases; Rotations; Rain; Conservation tillage; Herbicides; Weed control
 
 
 126                                                NAL Call. No.: 100 SO82 (3)
 Farming systems studies, 1990: overview and cultural practices.
 Smolik, J.; Gerwing, J.; Hall, B.; Rickerl, D.; Schumacher, T.; Woodard, H.;
 Wrage, L.
 Brookings, S.D. : The Station; 1991.
 TB - Agricultural Experiment Station, South Dakota State University (97): 9 p.
 (soil PR 90-30); 1991.
 
 Language:  English
 
 Descriptors: South Dakota; Rotations; Minimum tillage; Field crops; Crop
 yield; Soil properties
 
 
 127                                                NAL Call. No.: 100 SO82 (3)
 Farming systems studies, 1991.
 Brookings, S.D. : The Station; 1992 Oct.
 TB - Agricultural Experiment Station, South Dakota State University (99): 6 p.;
 1992 Oct.  In the series analytic: Soil science research in the Plant Science
 Department : 1991 Annual Report. Soil PR 91-3.
 
 Language:  English
 
 Descriptors: South Dakota; Farming systems research; Rotations; Conservation
 tillage; Alternative farming; Minimum tillage; Row tillage; Crop yield; Cost
 benefit analysis
 
 
 128                                              NAL Call. No.: aS604.F37 1993
 Farming with crop residues.
 United States, Soil Conservation Service
 Champaign, Ill. : U.S. Dept. of Agriculture, Soil Conservation Service,; 1993;
 A 57.2:F 22/8.
 33 p. : ill. ; 16 cm.  Cover title.  Shipping list no.: 93-0227-P.  "January
 1993"--P. [4] of cover.  "CRM-190-11-12"--P. [4] of cover.
 
 Language:  English; English
 
 Descriptors: Crop residue management; Conservation tillage
 
 
 129                                                  NAL Call. No.: QL461.E532
 Fate of eggs of first-generation Ostrinia nubilalis (Lepidoptera: Pyralidae) in
 three conservation tillage systems.
 Andow, D.A.
 Lanham, Md. : Entomological Society of America; 1992 Apr.
 Environmental entomology v. 21 (2): p. 388-393; 1992 Apr.  Includes
 references.
 
 Language:  English
 
 Descriptors: Minnesota; Zea mays; Ostrinia nubilalis; Ova; Chrysopa;
 Trichogramma; Predation; Parasites of insect pests; Conservation tillage
 
 Abstract:  Percentage hatch, chewing predation, Chrysopa sp. predation, other
 sucking predation, and parasitism by Trichogramma sp. of egg masses of
 first-generation Ostrinia nubilalis (Hubner) were estimated in spring chisel
 plow, ridge tillage, and no-tillage maize, Zea mays L., in southeastern
 Minnesota during 1986 and 1987. Tillage plots were split with and without
 terbufos application and with and without Bacillus thuringiensis-permethrin
 application in all combinations. Egg masses from laboratory reared O.
 nubilalis were exposed to natural enemies in the field eight times during the
 oviposition period of first-generation O. nubilalis, and population densities
 of Coleomegilla maculata DeGeer were estimated. Parasitism was 0.6% and
 predation was low during 1986. During 1987, chewing predation was highest in
 the chisel-plow system and lowest in the no-tillage system; Chrysopa sp.
 predation was lowest in the chisel-plow system and highest in the no-tillage
 system. C. maculata population densities were highest in the chisel-plow
 system and lowest in the no-tillage system, and chewing predation was
 positively related to C. maculata density. Predation by other unknown chewing
 predators was also higher in the chisel-plow system and lowest in the
 no-tillage system. The inverse relation between chewing and Chrysopa sp.
 predation was probably related to species-specific responses to the tillage
 environments.
 
 
 130                                                  NAL Call. No.: S539.5.J68
 Feasibility of no-tillage and ridge tillage systems in the Northeastern USA.
 Cox, W.J.; Otis, D.J.; Van Es, H.M.; Gaffney, F.B.; Snyder, D.P.; Reynolds,
 K.R.; Van der Grinten, M.
 Madison, Wis. : American Society of Agronomy; 1992 Jan.
 Journal of production agriculture v. 5 (1): p. 111-117; 1992 Jan.  Paper
 presented at a symposium on "Ecology and Management of Grazing Systems"
 presented at the annual meeting of the American Association for the
 Advancement of Science, January 14-19, 1991, San Francisco, California.
 Includes references.
 
 Language:  English
 
 Descriptors: New York; Zea mays; No-tillage; Conservation tillage; Tillage;
 Plowing; Crop density; Crop yield; Feasibility studies
 
 
 131                                                    NAL Call. No.: SB249.N6
 Fertilization practices in conservation tillage.
 Denton, P.
 Memphis, Tenn. : National Cotton Council of America; 1993.
 Proceedings - Beltwide Cotton Conferences. p. 113-116; 1993.  Meeting held
 January 10-14, 1993, New Orleans, Louisiana.  Includes references.
 
 Language:  English
 
 Descriptors: Conservation tillage; Fertilizer technology
 
 
 132                                                     NAL Call. No.: 4 AM34P
 Fertilizer management effect on recovery of labeled nitrogen by continuous no-
 till.
 Timmons, D.R.; Baker, J.L.
 Madison, Wis. : American Society of Agronomy; 1992 May23.
 Agronomy journal v. 84 (3): p. 490-496; 1992 May23.  Includes references.
 
 Language:  English
 
 Descriptors: Iowa; Zea mays; Continuous cropping; No-tillage; Nitrogen
 fertilizers; Use efficiency; Application rates; Radioactive tracers;
 Application methods; Crop yield
 
 Abstract:  Improved fertilizer N management with respect to placement and
 timing is especially important in high-residue systems designed to improve N-
 use efficiency and to speed adoption of erosion controlling tillage
 practices. By means of point-injection technology, fertilizer solutions now can
 be applied and soil-incorporated with minimal disturbance of surface
 residue or existing plants. This study was conducted in large non-weighing
 lysimeters (with reconstituted soil horizons) to determine the recovery of 15N-
 labeled urea-ammonium nitrate (UAN) solution by continuous no-till corn (Zea
 mays L.) during the initial year of application and two subsequent years for
 four N management systems. The UAN solution was point-injected in split
 applications at rates of 125 or 200 kg N ha-1, or knifed-in or surface-banded
 right after plant emergence at 200 kg N ba-1. For the initial year of 15N
 application, the percent recovery of labeled N (NR) in grain was 48, 39, 33,
 and 30% for point-injected (low rate/split), point-injected (high rate/split),
 knifed-in, and surface-banded, respectively. The percentage of total grain N
 derived from labeled N (Nf) ranged from 57 to 67% and was in the order of
 point-injected (high rate/split) > knifed-in > point-injected (low rate/split)
 > surface-banded. Residual labeled N recovery in grain ranged from 2.3 to 4.6%
 for the second season and from 0.9 to 1.0% for the third season with no
 significant differences among application treatments for either season. After
 rive seasons the NR values for labeled N determined in the soil N pool still
 ranged from 20 to 26%. UAN solution applied in split applications with the
 point injector was used more efficiently by corn than when knifed-in or
 surface-banded in a single application, indicating the point-injection/split
 application system is an option for improved N management in no-till corn.
 
 
 133                                                     NAL Call. No.: 4 AM34P
 Fertilizer placement and tillage effects of nitrogen assimilation by wheat.
 Rao, S.C.; Dao, T.H.
 Madison, Wis. : American Society of Agronomy; 1992 Nov.
 Journal of the American Society of Agronomy v. 84 (6): p. 1028-1032; 1992 Nov. 
 Includes references.
 
 Language:  English
 
 Descriptors: Oklahoma; Triticum aestivum; Seasonal fluctuations; Nutrient
 uptake; Nitrogen; Assimilation; Nitrogen fertilizers; Placement; Application
 rates; Phosphorus fertilizers; No-tillage; Tillage; Nitrate nitrogen; Use
 efficiency; Crude protein; Plant composition; Crop yield; Grain; Wheat straw;
 Nitrogen metabolism
 
 Abstract:  Little information is available concerning tillage effects on
 seasonal N accumulation and their effect on wheat yield. Field studies were
 conducted to determine the effects of fertilizer N placement and tillage
 practices on the reduction and assimilation of N in winter wheat (Triticum
 aestivum L.) during 1984 through 1987 on Renfrow silt loam (fine, mixed,
 thermic, Uderic, Paleustolls) near El Reno, OK. Fertilizer N (50 kg ha-1) and P
 (60 kg ha-1) including 4 kg N ha(-1) and 11 kg P ha(-1), with the seed was
 applied in the fall. In the spring, an additional 50 to 100 kg N ha(-1) as
 ammonium nitrate was either broadcast or placed in narrow bands on the soil
 surface. Nitrate reductase (NR) activity, NO3-N, and crude protein (CP)
 content of wheat plants were determined periodically during spring growth until
 anthesis, and final grain and straw yield and their CP contents were
 determined. The NR activity in early spring was slightly greater during early
 spring in plants grown under no-till when compared to conventional till in 1985
 and 1986, whereas the reverse was observed in 1987. lncreased NR activity was
 paralleled by an increase in vegetative CP. Placement of N in a narrow band on
 the soil surface in the spring improved NR activity levels, but the effect of N
 placement had little effect on CP concentration. Grain yield
 followed NR activity levels and was 36% higher in no-till in 1985, similar in
 1986, but 51% lower in 1987 than conventionally tilled plots. Placement of N in
 narrow bands increased N-use efficiency by increasing N reduction and
 assimilation; but had little effect on the yield of grain and straw in both
 tillage methods.
 
 
 134                                                NAL Call. No.: 275.29 IL62C
 Field and forage crops.
 Henn, T.; Weinzierl, R.; Gray, M.; Steffey, K.
 Urbana, Ill. : The Service; 1991 Feb.
 Circular - University of Illinois, Cooperative Extension Service (1307): 26 p.;
 1991 Feb.  Includes references.
 
 Language:  English
 
 Descriptors: Illinois; Field crops; Fodder crops; Pest management;
 Insecticides; Insect pests; Rotations; Pest resistance; Trap crops;
 Conservation tillage
 
 
 135                                                   NAL Call. No.: 275.8 AG8
 A field based model for adult education in agriculture.
 Bruening, T.H.; Martin, R.A.
 Henry, Ill. : The Magazine; 1991 Apr.
 The Agricultural education magazine v. 63 (10): p. 8-9; 1991 Apr.  Includes
 references.
 
 Language:  English
 
 Descriptors: Agricultural education; Adult education; Program development;
 Program evaluation; Conservation tillage
 
 
 136                                                     NAL Call. No.: 450 C16
 Foliar disease development in no-till winter wheat: influence of agronomic
 practices on powdery mildew development.
 Tompkins, D.K.; Wright, A.T.; Fowler, D.B.
 Ottawa : Agricultural Institute of Canada; 1992 Jul.
 Canadian journal of plant science; Revue canadienne de phytotechnie v. 72 (3):
 p. 965-972; 1992 Jul.  Includes references.
 
 Language:  English
 
 Descriptors: Saskatchewan; Triticum aestivum; Fungus control; Cultivars;
 Interactions; Nitrogen fertilizers; No-tillage; Row spacing; Sowing rates
 
 
 137                                              NAL Call. No.: S592.17.A73A74
 Fractionation of micronutrient cations in a selected Saudi Arabian soil
 subjected to different tillage practices.
 Falatah, A.M.
 Washington, DC : Taylor & Francis; 1993 Jan.
 Arid soil research and rehabilitation v. 7 (1): p. 63-70; 1993 Jan.  Includes
 references.
 
 Language:  English
 
 Descriptors: Saudi arabia; Calcareous soils; Conservation tillage; Tillage; No-
 tillage; Harrowing; Chiselling; Plowing; Discing; Comparisons; Zinc;
 Copper; Manganese; Iron; Cations; Chemical speciation; Distribution; Nutrient
 availability; Soil organic matter; Soil ph; Cation exchange capacity
 
 
 138                                                     NAL Call. No.: 4 AM34P
 Genotype-by-tillage interactions in hard red winter wheat quality evaluation.
 Cox, D.J.; Shelton, D.R.
 Madison, Wis. : American Society of Agronomy; 1992 Jul.
 Agronomy Journal v. 84 (4): p. 627-630; 1992 Jul.  Includes references.
 
 Language:  English
 
 Descriptors: North Dakota; Triticum aestivum; Winter wheat; Genotypes;
 Genotype environment interaction; No-tillage; Tillage; Conservation tillage;
 Variety trials; Varietal reactions; Crop yield; Crop quality; Wheat flour;
 Baking quality; Breadmaking; Protein content
 
 Abstract:  Winter wheat (Triticum aestivum L.) is grown under both
 conventional-till and conservation-till systems in the Northern Great Plains. A
 benefit of sowing winter wheat into standing stubble is the protection the crop
 receives from trapped snow and the resultant reduction in winter kill. A 5-yr
 study was conducted at four locations in North Dakota to measure
 cultivar-by-tillage interactions for quality parameters of wheat and to
 determine whether testing under both conventional-till and no-till systems was
 advantageous. Fourteen hard red winter wheat cultivars were planted during
 1984-1985 through 1988-1989 in a Max loam (fine-loamy, mixed, Typic
 Haploborolls) at both Williston and Minot, in a Svea loam (fine-loamy, mixed,
 Pachic Udic Haploborolls) at Langdon, and in a Bearden silty clay (fine-silty,
 frigid, Aeric Caldaquolls) or Gardena silty loam (coarse-silty, mixed, Pachic
 Udic Haploborolts) at Fargo. Significant cultivar-by-tillage interactions (P <
 0.05 or P < 0.01) were obtained for volume weight, protein content, and flour
 when the analysis was restricted to environments in which wheat winter killed.
 A change in rank order of cultivars was detected only for volume weight. For
 the other quality parameters measured, evaluation of winter wheats grown in
 conventional-till and no-till plots resulted in similar relative performance of
 cultivars.
 
 
 139                                                   NAL Call. No.: 100 SO82S
 'Good' and 'bad' years in one.
 Beck, D.
 Brookings, S.D. : The Station; 1992.
 South Dakota farm & home research - South Dakota, Agricultural Experiment
 Station v. 43 (1): p. 15-17; 1992.
 
 Language:  English
 
 Descriptors: South Dakota; Irrigation; Rotations; Conservation tillage
 
 
 140                                                   NAL Call. No.: SB610.W39
 Grain rye residues and weed control strategies in reduced tillage potatoes.
 Lanfranconi, L.E.; Bellinder, R.R.; Wallace, R.W.
 Champaign, Ill. : The Weed Science Society of America; 1993 Jan.
 Weed technology : a journal of the Weed Science Society of America v. 7 (1): p.
 23-28; 1993 Jan.  Includes references.
 
 Language:  English
 
 Descriptors: New York; Cabt; Solanum tuberosum; Minimum tillage; Tillage; Crop
 residues; Secale cereale; Weed control; Galinsoga ciliata; Chemical control;
 Linuron; Metolachlor; Metribuzin; Application rates; Crop yield; Tubers
 
 
 141                                                   NAL Call. No.: SB610.W39
 Grain rye residues and weed control strategies in reduced tillage potatoes.
 Lanfranconi, L.E.; Bellinder, R.R.; Wallace, R.W.
 Champaign, Ill. : The Weed Science Society of America; 1992 Oct.
 Weed technology : a journal of the Weed Science Society of America v. 6 (4): p.
 1021-1026; 1992 Oct.  Includes references.
 
 Language:  English
 
 Descriptors: New York; Cabt; Solanum tuberosum; Tillage; Minimum tillage;
 Secale cereale; Linuron; Metolachlor; Hilling; Metribuzin; Efficacy; Crop
 yield; Weed control; Amaranthus retroflexus; Chenopodium album; Galinsoga
 ciliata; Chemical control; Cultural control
 
 
 142                                               NAL Call. No.: S604.G78 1991
 A Guide to ridge-till in the Central Plains.
 Hodson, Eric
 Servi-Tech, Inc
 Topeka, KS : Lone Tree Pub. Co.,; 1991.
 73 p. : ill. ; 28 cm.
 
 Language:  English
 
 Descriptors: Ridge-till
 
 
 143                                                    NAL Call. No.: 421 J822
 Habitat and food preferences of Allonemobius allardi (Orthoptera: Gryllidae)
 and potential damage to alfalfa in conservation-tillage systems.
 Jacobs, S.B.; Byers, R.A.; Anderson, S.G.
 Lanham, Md. : Entomological Society of America; 1992 Oct.
 Journal of economic entomology v. 85 (5): p. 1933-1939; 1992 Oct.  Includes
 references.
 
 Language:  English
 
 Descriptors: Pennsylvania; Medicago sativa; Crop damage; Dactylis glomerata;
 Weeds; Gryllidae; Food preferences; Habitats; Conservation tillage
 
 Abstract:  Population estimates of the cricket Allonemobius allardi (Alexander
 & Thomas) in orchardgrass, Dactylis glomerata L.; alfalfa, Medicago sativa L.;
 and weedy fields revealed significantly lower cricket densities for alfalfa
 compared with orchardgrass and weed fields. However, densities were not
 significantly different between orchardgrass and weed fields despite a
 considerable dissimilarity in vegetative composition. Laboratory feeding
 studies suggest that crickets preferred to forage on the substrate and had
 difficulty recognizing preferred food plants that were elevated above the
 substrate. Crickets preferred alfalfa to bluegrass, thatch, or oats, but
 preferred bluegrass to thatch. No significant difference in feeding was
 observed between whole alfalfa leaves and alfalfa leaf disks when both were
 placed horizontally on the testing arena substrate. The contents of crops from
 field-collected crickets showed Alternaria, rust spores, and fungi occur
 relatively frequently but do not account for a substantial percentage of
 cricket crop contents. Legumes and dandelion also occur with a moderately high
 frequency and are a major component of crop contents. Cage tests in glasshouse
 and field showed one to two cricket adults per 0.09 m2 reduced alfalfa
 seedling numbers by 1-20% in the 2 wk from seedling emergence to formation of
 the first trifoliate in conservation-tillage systems when alfalfa was planted
 in oat stubble.
 
 
 144                                                    NAL Call. No.: SB925.B5
 Habitat use patterns by the seven-spotted lady beetle (Coleoptera:
 Coccinellidae) in a diverse agricultural landscape.
 Maredia, K.M.; Gage, S.H.; Landis, D.A.; Scriber, J.M.
 Orlando, Fla. : Academic Press; 1992 Jun.
 Biological control v. 2 (2): p. 159-165; 1992 Jun.  Includes references.
 
 Language:  English
 
 Descriptors: Michigan; Coccinella septempunctata; Biological control agents;
 Habitats; Zea mays; Triticum aestivum; Populus; Medicago sativa; Insect
 control; Tillage; No-tillage; Habitat selection; Prey; Aphidoidea;
 Availability; Ecology
 
 
 145                                                    NAL Call. No.: 57.8 SO4
 Helping producers with conservation compliance.
 O'Brien-Wray, K.
 St. Louis, Mo. : Solutions Magazine; 1992 Mar.
 Solutions v. 36 (3): p. 18-22; 1992 Mar.
 
 Language:  English
 
 Descriptors: Iowa; U.S.A.; Conservation tillage; Soil conservation;
 Legislation; Surveys; Crop residues
 
 
 146                                                   NAL Call. No.: SB610.W39
 Hemp dogbane (Apocynum cannabinum) and wild blackberry (Rubus allegheniensis)
 control in no-tillage corn (Zea mays).
 Glenn, S.; Anderson, N.G.
 Champaign, Ill. : The Weed Science Society of America; 1993 Jan.
 Weed technology : a journal of the Weed Science Society of America v. 7 (1): p.
 47-51; 1993 Jan.  Includes references.
 
 Language:  English
 
 Descriptors: Maryland; Cabt; Zea mays; No-tillage; Weed control; Apocynum
 cannabinum; Rubus allegheniensis; Chemical control; Herbicide mixtures; 2,4-d;
 Dicamba; Triclopyr; Oils; Sulfonylurea herbicides; Crop yield; Grain;
 Phytotoxicity; Crop damage; Application rates
 
 
 147                                                    NAL Call. No.: 79.8 W41
 Herbicide comparisons on quackgrass (Elytrigia repens) within different crop
 competition and tillage conditions.
 Harker, K.N.; O'Sullivan, P.A.
 Champaign, Ill. : Weed Science Society of America; 1993 Jan.
 Weed science v. 41 (1): p. 94-99; 1993 Jan.  Includes references.
 
 Language:  English
 
 Descriptors: Canada; Cabt; Elymus repens; Crop weed competition; Tillage; No-
 tillage; Cloproxydim; Fluazifop; Haloxyfop; Quizalofop; Sethoxydim;
 Application rates; Weed control; Efficiency
 
 Abstract:  Five herbicides (cloproxydim, fluazifop, haloxyfop, quizalofop, and
 sethoxydim) were compared from 1984 to 1988 at 250 and 400 g ha-1 for
 controlling quackgrass within different crop competition and tillage
 conditions at the Lacombe Research Station. Crop competition usually augmented
 quackgrass control with the herbicides in conv