Effect of integrated weed management practices on weed control efficiency, yield and economics in brinjal

Abstract

An experiment was conducted on the effect of different integrated weed management practices on weed control efficiency, yield and economic analysis in brinjal at Vegetable Research Station, Agriculture Research Institute, Rajendranagar, Hyderabad. The experiment was laid out in randomized block design with thirteen treatment combinations and replicated thrice. Among the treatments, the highest number of fruits per plant (28.46), highest average fruit weight (45.33 g) and highest fruit yield (31.10 t ha-1) was noticed with hand weeding three times at 20, 40 and 60 days after transplanting and also the highest gross returns (Rs.3,73,200), cost of cultivation (Rs. 66,800) and net returns (Rs. 3,06,400) followed by inter cultivation at 25 and 50 DAT (T11). The highest weed control efficiency was recorded at 30 DAT in the treatment glyphosate @ 1.5 kg a.i ha-1 directed spray at 25 and 50 DAT (T10) (87.23%). At 60 DAT highest weed control efficiency was recorded in pendimethalin C.S as pre-emergence @ 0.70 kg a.i ha-1 + one hand weeding at 45 DAT (T1) (92.98%) whereas at 90 DAT and at final harvesting stage highest weed control efficiency was recorded in the treatment hand weeding three times at 20, 40 and 60 DAT (T12) (81.06% and 79.89% respectively). Minimum weed index was recorded in the treatment inter cultivation at 25 and 50 DAT (T11) (15.80%).