An experiment entitled “Influence of combination of herbicides on mixed weed flora in Wheat (TriticumaestivumL.)” was conducted at
Birsa Agricultural University Farm, Ranchi, and Jharkhand during Rabiseason during 2021-22.The experiment was led out in randomized
block design (RBD) with twelve treatments and replicated thrice with the variety DBW 187 under irrigated conditions. The treatments
comprised Pendimethalin@1000g a.i/ha(PE), Pendimethalin@1500g a.i/ha(PE), Pyroxasulfone 85%WG @127.5g a.i/ha(PE),
Pendimethalin@1250g a.i.(PE)+Pyroxasulfone 85%WG @127.5g a.i/ha(PE), Pyroxasulfone @ 127.5g a.i/ha + metsulfuron @ 4g a.i/ha
(tank mixPE),Results revealed that application of Pyroxasulfone @ 127.5g a.i/ha + metsulfuron @ 4g a.i/ha (tank
mixPE) exhibited the lowest total weed density (31.3and 47.0/m 2 ), total weed dry weight (11.3 and 31.5 g/m 2 ) and the highest weed control efficiency (80.9 and 79.1 %) at 30 and 60 days after sowingrespectively. Similarly, application of Pyroxasulfone @ 127.5g a.i/ha + metsulfuron @ 4g a.i/ha (tank mix PE) alsorecorded the highest yield attribute viz; spikes/m 2 (418), number of grains/spike (44.8), 1000 – grain weight (46.5 g), grain yield (5.81 t/ha), straw yield (6.65 t/ha) and net return (₹ 77696/ha) among herbicidal treatments.