Abstract
t A field experiment was conducted during rainy (kharif) season of 1995 and 1996 on alluvial soils of Agronomy Research Centre of College of Agriculture, Gwalior (M.P.). Pre-emergence application of alachlor and pendimethalin @ 1.50 kgtha were comparable with two hand-weedings (20 and 30 DAS) in reducing the weed density and weed biomass, and increasing the weed-control efficiency as well as number of podstplant and weight of pods. Pooled data showed that except the weed-free treatment, next in higher order was the treatment of two hand weedings, which gave maximum seed yield (12.45 qlha) , followed by alachlor @ 1.5 kglha. However, alachlor at 1.5 kglha was on a par with penedimethalin 1.5 kg a.i./ha as pre-emergence and fluchloralin 1.5 kg a.i./ .ha as pre-plant application. 4 Key words : Soybean, Alachlor, Pendimethalin, Hand-weeding
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