Effect of tillage, residue and weed management on soil properties, and crop productivity in greengram (Vigna radiata L.) under conservation agriculture

Abstract

Effect of tillage, crop residue and weed management on soil properties, and crop productivity in greengram (Vigna radiata L.) was evaluated under conservation agriculture in Central India, Jabalpur M.P. Soil bulk density at 0–15 cm layer was reduced both by tillage and residue, while zero-tillage with residue treatment significantly increased the soil organic carbon content. Yields of greengram was significantly higher under ZT+GR (M)-ZT+MR (Msr)-ZT+MsR (G) in maize–mustard-greengram cropping systems, more so with residue addition. When no residue was added, conventional tillage reduced soil fertility and productivity than the zero-tillage. Although zero-tillage resulted in better C content and N availability in soil, and reduced the economic inputs, cultivation of summer greengram appeared to be profitable under conservation tillage system with residue and weed management.