Vol. 12, Issue 6 (2023)

Author(s):
Shubham Kushwaha, Naveen Kumar Maurya, Ravikesh Kumar Pal, Vineet Dheer, Rajat Yadav and Mahendra Yadav

Abstract:
An experiment comprising 8 treatments viz., Imazethapyr 70 g ha^-1 PRE, Imazethapyr 70 g ha^-1 POE (3-4 leaf weeds stage), Imazethapyr + imazamox (RM) 70 g ha^-1 POE (3-4 leaf weeds stage), Imazethapyr + imazamox (RM) 80 g ha^-1 POE (3-4 leaf weeds stage), Pendimethalin 1000 g ha^-1 PRE, Imazethapyr + Pendimethalin (RM) 1000 g ha^-1 PRE, Topramezone 25.80 g ha^-1 as POE (3-4 leaf weeds stage) and ­Hoeing (20 & 40 DAS) along with weedy check were subjected in randomized block design with 3 replications at Research Farm of the University in Urdbean cv. Shekhar 2 during Kharif 2022. A wide spectrum of weed flora viz., Echinochloa colona, Cynodon dactylon, Solanum nigrum, Trinthema monogyna, Celosia argentea, Cyperus rotundus, Digera arvensis, Phyllanthus niruri, and Commelina benghalensis were observed. The application of pendimethalin 1000 g ha^-1 (pre emergence) and imazethapyr 70 g ha^-1 (post emergence at 3-4 leafy stage of weeds) was found to be most effective for minimizing weed density and maximizing its weed control efficiency, yield and its contributing traits. Thus, the combination of these both as pre emergence (Pendimethalin1000 g ha^-1) and post emergence (Imazethapyr 70 g ha^-1) could be exploited in order to harvest the maximum grain yield (12.48 q ha-1), revenue generation (net return Rs.57586 ha-1) and B: C ratio (2.04) in Urdbean cultivation during Kharif season.