Vol. 1, Issue 2 (2017)
Efficacy of bensulfuron methyl plus pretilachlor against complex weed flora in transplanted kharif rice (Oryza sativa L.)
Author(s): Tiryak Kumar Samant
Abstract: The improved practice with pre emergence application of bensulfuron methyl at 60g /ha + Pretilachlor at 600 g/ha at 3 DAT recorded weed dry weight (7.27, 19.69, 27.47 g m-2) and the weed control efficiency (73.13, 33.61 & 43.92 %) at 30, 60 & 90 DAT respectively, which were higher than farmers practices of one hand weeding. The improved technology also produced grain yield (48.63 q ha-1) which was 19.7% higher than local check with harvest index, Effectivity of tillers, spikelet fertility 46.5, 79.4 and 92.7 % respectively. The same also recorded higher gross return of Rs. 77024.98 ha-1 with a benefit cost ratio of 1.90 and additional net return of Rs.11321.08 ha-1 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 and net realization.