Effect of seed rate and weed-control methods on yield of soybean (Glycine max) under rainfed condition

Abstract

A field experiment was conducted during the rainy (kharif) season of 1996 and 1997 to study the effect of seed rate and weed-control treatments on the weed growth and yield of soybean [Glycine max (L.) Merr.]. Higher seed rate (150 kg/ha) s~gnificantly reduced the weed population and dry weight of weeds compared with the lower seed rates (125 and 100 kglha) and enhanced the soybean yield. Two hand-weedings and metolachlor granules (5%) @ 2 kglha were equally effective in reducing weed population and dry weight of weeds. Hand-weeding recorded the maximum seed yield and was significantly superior to all other treatments. - -i Key words : Soybean, Seed rate, Weedicides, Yield