Mechanical weeding, Black gram, Green gram

Sixty field demonstrations on herbicidal weed control technology were laid out during kharif of 2003 to 2005 in soybean at randomly selected three villages (Surai, Natwara, Belkharu) of Sahapura block, Jabalpur with an objective to show the performance and profitability of provon herbicides, viz. chlorimuron ethyl (10 g/ha), chlorimuron ethyl (10 g/ha) + fenoxaprop-p-ethyl at (75 g/ha) and imazethapyr at (750 g/ha) on weed growth and productivity of soybean at farmers’ fields. Fields were found infested with mixed weed flora. The herbicides under demonstration were found very effective in increasing grain yield of soybean by 53-98 per cent over farmer’s practice depending upon the intensity and growth of weeds. Benefit over the farmers’ practice were varied from Rs. 11,275/- to Rs. 12,600/- per hectare.