Bio-efficacy of Sulfentrazone 39.6% SC against Weed Flora of Soybean

Inadequate weed control is one of the primary causes a decrease in soybean production. Weeds compete for resources with crops (water, light and nutrients). This competition especially important during early stages crop development, when production losses up to 80 per cent are possible, extreme cases, harvest operations hampered. As result, current study sought identify an effective practice soybean.To assess bio-efficacy Sulfentrazone 39.6% SC as post-emergent (PRE) herbicide soybean. The experiment was laid RCBD (Randomized complete Block Design). A field conducted at Agricultural Research Station, Bidar, University Sciences, Raichur, Karnataka, India kharif seasons 2019 2020. consisted seven treatments three levels PRE (240, 360, 480 g a.i ha-1), two check herbicides (Authority XL @ 360 a.i. ha-1 Pendimethalin 1 kg ha-1as PRE), hand weeding twice 20 40 days after sowing, weedy replicated times. Application sulfentrazone 39.6%SC premergent significantly reduced density dry biomass critical period crop-weed competition. application resulted higher efficiency (WCE), yield, economics soybean, which comparable application. Hence, pre emergent advocated farmers weeds.