Vol. 11, Issue 12 (2022)

Author(s):
MR Koturwar, Pawar SU, Syed SJR and Mirza IAB

Abstract:
An experiment entitled effect of weed management and weather parameters on weed flora and yield of soybean (Glycine max L. Merrill) 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 combinations. The main plot consisted of three dates of sowing D₁ (26 MW), D₂ ( 28 MW), D₃ (30 MW) and subplot consisted of four weed management practices 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 (1 Hand Weeding +1 Hoeing) and W₄ (Unweeded control). The lowest weed count for both monocot and dicot weeds were found in D₃ (30 MW) at 15, 30, 45 days after sowing. Among the weed management practices, 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) recorded lowest weed dry matter and were comparable with hand weeding. The yield and yield attributes of soybean were significantly higher with W₃ (1Hand Weeding +1 Hoeing) but statistically at par with W₁ (PE Sulfentrazone 28%+ Clomazone 30% @ 350+375 g a.i/ha) which was followed by W₂ (P_OE Propaquizafop 2.5% + Imazethapyr 3.75% @ 50+75 g a.i/ha).