Corn and weeds response to some selective herbicides
1991
Abid, M.M. | Cheema, Z.A. | Ahmad, S. | Mahmood, T. | Akhtar, C.M. (National Agricultural Research Centre, Islamabad (Pakistan). Sorghum and Millet Programme)
Effect of some selective herbicides on grass and broad leaf weeds in corn was investigated during 1988 on loam soil. The treatments were weedy check, hand weeding, pendimethalin 330 E (1.31 kg a.i./ha pre-emergence), dicamba 21 g per litre + mecoprop 324 g per litre (1.38 kg a.i./ha post-emergence), 2,4-D amine plus dicamba 21 g per litre + mecoprop 324 g per litre (0.44 kg a.i./ha plus 0.69 kg a.i./ha hectare, respectively post-emergence) and Atrazine + metolachlor 50 WP (1.88 kg a.i./ha pre-emergence). All herbicides decreased weed, population (67.9-84.1%). The yield increase was 26 to 62 percent over control. Atrazine + metolachlor; pendimethalin treatments gave 62.3 and 51 percent; higher yield than control, respectively. Increase in hand weeding was 48.6 percent. Atrazine + metolachlor and 2,4-D amine + dicamba remained economical over other treatments.
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