Vol. 11, Issue 12 (2022)

Author(s):
MR Koturwar, Pawar SU, Aher KP and VB Awasarmal

Abstract:
An experiment on weed management in soybean (Glycine max L. Merrill) under varied weather conditions was carried out during the Kharif season of 2021-22 at experimental Farm, Department of Agronomy, College of Agriculture, Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani (M.S). The experiment was laid out in Split Plot Design with three replications and twelve treatments combination of The main plot treatments consisted of three dates of sowing D₁ (26 MW), D₂ (28 MW), D₃ (30 MW) and subplot consisted of four weed management practices viz. W₁ (PE Sulfentrazone 28%+ Clomazone 30% @ 350+375 g a.i/ha),W₂ (P_OE Propaquizafop 2.5% + Imazethapyr 3.75% @ 50+75 g a.i/ha), W₃ (1Hand Weeding+1 Hoeing) and W₄ (Unweeded control). The lowest weed dry weight (g) for both monocot and dicot weeds were found in D₃ (30 MW) at 30 and 45 days after sowing. Among weed management practices in soybean, W₁ (PE Sulfentrazone 28%+Clomazone 30% @ 350+375 g a.i/ha) followed by W₂ (P_OE Propaquizafop 2.5% + Imazethapyr 3.75% @ 50+75 g a.i/ha) were found most effective in controlling weeds recording lowest weed dry matter. These treatments were comparable to W₃ (1Hand Weeding +1 Hoeing) and found significantly superior over other treatments. Seed yield ,straw yield and biological yield of soybean was obtained significantly higher in W₃ (1Hand Weeding +1 Hoeing) treatment but was at par with W₁ (PE Sulfentrazone 28%+ Clomazone 30% @ 350+375 g a.i/ha) followed by W₂ (P_OE Propaquizafop 2.5% + Imazethapyr 3.75% @ 50+75 g a.i/ha).