Influence of Integrated weed management on weed control efficiency and economics of soybean (Glycine max. (L.) Merrill)

A field experiment was carried out at experimental farm of Agronomy section, College of Agriculture, Latur during Kharif 2017. As the title indicates, the current work aims to study the effect of integrated weed management on weed control efficiency, weed index and economics of soybean (Glycine max. (L.) Merrill). The experiment was laid out in a Randomized Block Design with eight treatments and replicated thrice. The work revealed that, the treatment (T8) i.e. Weed free recorded lowest weed count at 60 DAS and lowest weed index at harvest. Which was followed by the treatment (T4) Pendimethalin 30% EC @ 1kg a.i./ha (PE) + Imazethapyr 10% SL @ 100g a.i./ha (PoE). Highest weed control efficiency was recorded in weed free plot (T8) i.e. 96.57 per cent followed by treatment (T4) Pendimethalin 30% EC @ 1kg a.i./ha (PE) + Imazethapyr 10% SL @ 100g a.i./ha (PoE) 78.00%. Highest weed count and weed index (36.95%) were recorded in weedy check (T7) which were significantly superior over rest of the treatments. Highest net monetary returns and gross monetary returns were obtained due to (T8) weed free plot i.e. ₨. 35973 ha-1 and ₨.70315 ha-1. Study revealed the superiority of treatment weed free (T8) in case of effective weed control in order to achieve higher GMR, NMR, B: C Ratio and suggesting the positive benefits of weed management which indirectly influences the yield of soybean.