Vol. 12, Issue 1 (2023)

Author(s):
KP Aher, Pawar SU, Syed SJR and Gokhale DN

Abstract:
A field investigation to study the performance of newly released broad spectrum post emergence herbicide combinations in soybean (Glycine max (L.) Merrill)” was conducted during kharif 2021-22 at experimental farm, Department of Agronomy, College of Agriculture, VNMKV, Parbhani (M.S) to study the effect of different weed management practices on growth and yield of soybean. The experiment was laid out in Randomized Block Design. The experiment was carried out with seven weed management practices replicated thrice. Treatment comprised of T₁-PoE- Fluazifop-p-butyl 11.1% + Fomesafen 11.1% W/W SL @ 250 g a.i ha^-1, T₂- PoE- Imazethapyr 35% + Imazamox 35% WG @ 70 g a.i ha^-1, T₃- PoE- Sodium acifluorfen 16.5% + clodinafop propargyl 8% EC @ 80 +165 g a.i ha^-1, T₄- PoE- Propaquizafop 2.5% + Imazethapyr 3.75% W/W @ 50 + 75 g a.i ha^-1, T₅- PoE- Fomesafen 12% + Quizalofop ethyl 3% SC @ 180 +45 g a.i ha^-1, T₆- Weed free and T₇- Weedy check. Result of study revealed that among the herbicide combinations in soybean the lowest weed dry matter for both monocot and dicot weed and highest seed yield was recorded with PoE-Fomesafen 12% + Quizalofop ethyl 3% SC @ 180 +45 g a.i ha^-1 (T₅), PoE-Fluazifop-p-butyl 11.1% + Fomesafen 11.1% W/W SL@ 250 g a.i ha^-1 (T₁) and PoE- Sodium acifluorfen 16.5% + clodinafop propargyl 8% EC @ 80 +165 g a.i ha^-1 (T₃) and these treatments were found most effective in controlling dry weed weight and as well as recorded highest seed yield, biological yield, straw yield and yield attributing character. The treatments were comparable to weed free (T₆) and found to be significantly superior over rest of treatments.