Author(s):

Kabita Mishra

Abstract: Field study were carried out through front line demonstrations during Kharif season of 2017& 2018 in villages of Ganjam district i.e., Gudiapalli, Jharapadar, Putipadar in Odisha on farmers field with the active participation of farmers with an objective to evaluate the effect of herbicide Bensulfuron methyl plus pretilachlor in weed management of transplanted kharif rice. The results revealed that rice was infested with three categories of weeds viz grasses, broadleaved and sedges. Bensulfuron methyl at 60g /ha + Pretilachlor at 600 g/ha at 3 DAT completely controlled the grasses, broadleaved and sedges. The pre emergence application of bensulfuron methyl at 60g /ha + Pretilachlor at 600 g/ha at 3 DAT recorded weed dry weight (8.13, 21.3, 26.9 g m-2) and the weed control efficiency (74, 49.4 & 42.9%) at 30, 60 & 90 DAT respectively, which were higher than farmers practices of one hand weeding. The improved technology also produced grain yield (45.64 q ha-1) which was 11.9% higher than local check with harvest index. The same also recorded higher gross return of Rs. 72320.8 ha-1 with a benefit cost ratio of 1.74 as compared to local check. Thus, pre-emergence application of bensulfuron methyl 60g /ha + pretilachlor 600 g/ha at 3 DAT was very effective in reducing the weed biomass in transplanting rice with higher grain yield.

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