Mississippi State University
Varco, Jac J.
Henry, W. Brien
Cox, Michael S
Lemus, Rocky W
Date of Degree
Graduate Thesis - Open Access
Plant and Soil Sciences||Concentration in Agronomy
Master of Science
College of Agriculture and Life Sciences
Department of Plant and Soil Sciences
Improved N management is required to enhance crop productivity, while reducing concomitant losses. Research was conducted for 4-y studying winter cover crops. Three legume species grown alone or with either cereal rye (Secale cereale) or ‘Tillage Radish®’ (Raphanus sativus L.) were used to quantify cover crop biomass and N content plus their effects on corn grain yield and N recovery. The effects of these cropping systems on selected soil health indicators was also determined. Rye bicultures enhanced biomass production, but antagonistically affected corn performance. Radish inclusion resulted in equal or greater cover crop N than rye. In year 3, the addition of radish across legume species increased corn N content (10.6 kg ha-1) and grain yield (1050 kg ha-1). Although cover crops did not affect soil bulk density, both bicultures increased soil C/N. The legume-radish association offers a novel practice towards improving crop performance and soil quality.
Garay Lagos, Eduardo Samuel, "Monoculture to Biculture: Cover Cropping Effects on Biomass, Nitrogen Dynamics, and Yield in a Strip-Tilled Corn Production System" (2020). Theses and Dissertations. 3199.