Agro-Economic Feasibility of Weed Management in Soybean Grown in Vertisols of South-Eastern Rajasthan

摘要

Field experiment was conducted during kharif seasons of 2003 and 2004 to evaluate the economic feasibility of weed management practices in soybean crop in south-eastern Rajasthan. Post- emergence application of imazethapyr reduced the density and drybiomass of broad as well as narrow leaved weeds significantly as compared to pre-plant and pre-emergence and rest of post-emergence herbicides under study. The lowest weed density and biomass were recorded with two hand weedings at 30 and 45 days after sowing (DAS) followed by imazethapyr at 100 and 75 g/ha. Imazethapyr at 75 g/ha was found most agro-economic feasible by giving highest net returns (Rs. 10235/ha) and incremental cost: benefit ratio (9.89).