Weed Management Studies in Wheat (Triticum aestivum L.) Through New Herbicide Molecule Aclonifen 600 SC under Climate Changing Era

Abstract

Changing climate aggregates, the problem of weed management by rapid weed flora shift and resistance development. In these conditions, the best option is to use new herbicide molecules with a diverse mode of action and a wider application time window.   Thus, an herbicidal trial was conducted during the Rabi 2019-20 at Agricultural Research Farm, BHU, Varanasi. The experiment was laid out in RCBD design with 8 treatments viz., control (W1), aclonifen 600SC @ 1.05 kg a.i./ha PE (W2) and early POE (W5),aclonifen 600SC @ 1.2 kg  a.i./ha PE (W3) and early POE (W6), pendimethalin 30% EC @ 1.25 kg a.i./ha PE (W4), sulfosulfuron 75% WG @ 0.025 kg a.i./ha POE (W7), Farmer practice-2 hand weedings at 20 and 40 DAS (W8) and replicated thrice. Among different treatments aclonifen 600 SC @ 1.25 kg a.i./ha as pre and early post-emergence applied treatments recorded minimum weed density, weed dry matter production, highest weed control efficiency and crop persistence index. The same treatments registered better crop growth performance, and profitable yields.