This project is framed by three research objectives, one education objective, and one extension objective:Objective 1. Quantify the effects of biomulch properties and compost top-dressings on agronomic performance in organic spinach and carrot production systems, including weed suppression, nitrogen dynamics, soil temperature and moisture, disease incidence, and crop yield.Objective 2. Determine the effect of biomulch and compost top-dressings on foodborne pathogens and fecal indicators in organic spinach and carrots.Objective 3. Perform a partial budget analysis to identify potential labor and cost savings of the proposed biomulch system for organic spinach and carrots.Objective 4. Develop curriculum and teach a new online course for academic and professional audiences titled, "Organic Weed Management Innovations for Specialty Crops."Objective 5. Disseminate project results to current and future organic farmers and researchers.