Vol. 12, Issue 8 (2023)

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

Abstract:
A field experiment was conducted during the rabi season, 2021-2 at Research Farm, Andro (Imphal), Central Agricultural University, Imphal (Manipur), India to evaluate most efficient pre and post herbicides on chickpea. The experiment was laid out in randomized block design comprising eight herbicides viz., oxyfluorfen 150 g ai.ha (pre-emergence),oxyfluorfen 250 g ai.ha (pre-emergence), quizalofop-p-ethyl 100 g ai/ha at 15-20 DAS (post-emergence), propaquizafop 100 g ai/ha at 15-20 DAS (post-emergence), topramezone 20.6 g ai/ha at 14-21 DAS (post-emergence), oxyfluorfen 150 g ai.ha - quizalofop-p-ethyl 100 g ai/ha at 15-20 DAS (pre+post), oxyfluorfen 150 g ai.ha - propaquizafop 100 g ai/ha at 15-20 DAS (pre+post) and oxyfluorfen 150 g ai.ha - topramezone 20.6 g ai/ha at 14-21 DAS (pre+post), besides unweeded (control) and weed free treatments. Results revealed that higher weed control efficiency of 60.4% was achieved under the combined pre and post emergence herbicidal treatment of oxyfluorfen 150 g ai.ha (pre-emergence) followed by topramezone 20.6 g ai/ha (post emergence herbicide at 14-21 DAS) compared to other weed control treatments. Also the treatment recorded 128 per cent higher grain yield over the unweeded control along with the highest benefit-cost ratio of 1.8.