Vol. 12, Issue 9 (2023)

Author(s):
N Anando Singh, Sakhen Sorokhaibam, Sonika Yumnam, Jeti Konsam, Nilima Karam and Nancy Khairakpam

Abstract:
The experiment was undertaken at Research Farm, Andro (Imphal), Central Agricultural University, Imphal (Manipur),India for two consecutive years (2018-19 and 2019-2020) comprising six herbicides viz. Topramezone 20.6 g ai/ha at 14 DAS, Topramezone 20.6 g ai/ha at 21 DAS , Topramezone 25.7 g ai/ha at 14 DAS , Topramezone 25.7 g ai/ha at 21 DAS , Quizalof- p- ethyl 100 g ai/ha at 21 DAS and Imazethapyr at 70 g a.i/ha at 21 DAS besides unweeded control (UWC) and weed-free check (WFC). When compared to the other herbicides, Topramezone 20.6 g ai/ha at 14 DAS or 21 DAS significantly controlled the predominant broad-leaved weeds. In comparison to UWC, topramezone decreased total weed density by 76-91% and 48-65% at 45 and 105 DAS, respectively. So, compared to other treatments, this herbicide showed a better weed control efficacy of 82.71. Compared to the recommended herbicide Imazethapyr, Topramezone enhanced chickpea seed yield by 24.6–51.7% at 70 g a.i/ha at 21 DAS. In comparison to the WFC, the UWC caused a 66.9% yield reduction in chickpea. Significantly, topramezone provided yield comparable to WFC. Therefore, topramezone can be used in chickpea without risk to control broad-leaved weeds and achieve higher yield.