Vol. 11, Issue 5 (2022)

Author(s):
Monika Meena, Omesh Kumar, Rishi Kumar Rajput, Arvind Kumar Singh and Ipsita Dey

Abstract:
A field experiment conducted at Agricultural Research Farm, Department of Agronomy, BHU, Banaras to evaluate the efficacy of herbicide to control of weeds in wheat crop. Weed flora of the experimental field was dominated by various weeds like Solanum nigrum, Anagallis arvensis, Chenopodium album, Vicia sativa, Melilotus indicus, Rumex dentatus, and Medicago denticulatum, Cynodon dactylon, Phalaris minor and Cyperus rotundus. In the experimental field weeds were controlled by pre-emergence application of herbicides viz, pendimethalin 30% EC @ 600 g ha^-1, pendimethalin 30% EC @ 900 g ha^-1, pendimethalin 30% EC @ 1200 g ha^-1, pendimethalin 30% EC @ 1500 g ha^-1, metribuzin 70% WP @ 210 g ha^-1and weed free (two hands weeding). All herbicidal treatment compares with Untreated Control (Weedy check). Among all herbicidal treatment pendimethalin 30% EC @ 1200 g ha^-1 application is effective to control Phalaris minor, and Metribuzin have efficacy to control broad-leaf weed effectively and some narrow leaf weed. The highest grain yield observed in hand weeding (5693 kg ha^-1) followed by herbicidal treatments, pendimethalin 30% EC @ 1200 g ha^-1 (5078 kg ha^-1). Different dose of pendimethalin cause phytotoxicity in wheat by causing injury and there is no phytotoxicity in succeeding green gram.