Vol. 11, Issue 9 (2022)

Author(s):
P Giri, NK Jena, K Behera and AR Patra

Abstract:
An on farm trial was conducted to assess the effect of herbicides on weed dynamics, crop growth, yield and economics of summer Greengram at Bishnupur and Basulidiga village of Baliapal and Basta block during summer 2020 and 2021 in Balasore district of Odisha, respectively. The experiment was laid out in RBD design consisting of four treatment viz. T₁: Farmer practice, hand weeding at 25 DAS; T₂: Pre-emergence application of Pendimethalin @1 kg ha^-1 at 2 DAS; T₃: Post-emergence application of Imazethapyr @75 g ha^-1 at 20 DAS and T₄: T₂ + T₃, replicated seven times. Pre emergence application of Pendimethalin @1 kg ha^-1 followed by post emergence application of Imazethapyr @75 g ha^-1 recorded the maximum number of branches plant^-1 (6.3), number of pods plant^-1 (34.8), test weight (3.67), seed yield (7.48 qha^-1) and stover yield (36.90 qha^-1) with higher weed control efficiency (76.2%). However, lone application of Imazethapyr @75 g ha^-1 (PoE) recorded higher benefit cost ratio (2.43) which was statistically at par with sequential application Pendimathalin (PE) followed by Imazethapyr (PoE).