Chemical weed management in Berseem (Trifolium alexandrium L.)
2010
Singh, Dheer | Joshi, Y.P. | Singh, Virpal | Sachan, H.K.
Field experiment with eight (8) treatments to control weeds in berseem was conducted in two consecutive years during 2006-07 and 2007-08 in three replications. Pre-emergence application of butachlor @ 1.0 or 2.0 kg/ha or alachlor @ 2.0 kg/ha were found to be effective in controlling weeds in berseem, resulting in higher fodder yield. Highest fodder yield was recorded from butachlor applied @ 2.0 kg/ha. However, dry matter of weeds at 45 DAS stage was lower with alachlor applied @ 2.0 kg/ha. Weed control efficiency was highest (83.1%) with alachlor applied @ 2.0 kg/ha and weed index was lowest with application of butachlor @ 2.0 kg/ha. The fodder yield was reduced by 52.5% due to uncontrolled weeds in weedy check. Coronopus dedymus was the major non-grassy weed in the berseem crop.
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