In six on-farm trials to evaluate three cover crops (oats, oats plus vetch, and phacelia plus vetch) for strip-till sweet corn production, the oat-vetch mixture increased average corn yields by an average of 11%, or one ton per acre compared to the fallow plots. After factoring costs of cover crop establishment, the oat-legume cover crop increase net profit by $50/acre compared to the fallow treatment. In a two-year experiment to evaluate nitrogen (N) contribution of cover crops in organic broccoli production, the phacelia-vetch mixture increased broccoli yield over the fallow treatment by 1.3 tons per acre, worth $2,370 per acre.
Objective 1. To enhance farmers’ ability to select and manage cover crops in conservation tillage vegetable crop production systems
Objective 2. To evaluate the nitrogen contribution of legume-based cover crops to organic vegetable production