An experiment was conducted to determine the effect of relatively cheaper, safer inputs of compatible management combination on yellow mite. The experiment was laid out in randomized block design with seven treatments replicated thrice. Two spraying of each treatment was done at 15 days interval. The effect of treatment was significant on post treatment mite population recorded after spray for both the season. Among the treatments, T5 [Lecanicillium lecanii (2x108 cfu/gm)@3gm/lit at 35 DAS+Spiromesifen 240 SC@0.7 ml/lit at 50 DAS] was found to be the most effective combination. The post treatment observation during 2015 and 2016 at 7 days after treatment indicated significantly less number of mites i.e.(1.47 and 2.30 mites/sq. cm) and (1.02 and 0.83 mites/sq. cm) respectively in the treatment T5. Among the treatments, maximum plant height (222.24 and 221.14 cm) yield (36.29 and 37.44 q/ha) and benefit cost ratio (1.25 and 1.32) were also observed in treatment T5.
Prahlad Sarkar, Srima Das, Shyamal Kheroar, Avijit Kundu, Swapan Kumar Barman and Kausik Mondal. Bio-rational management of yellow mite in dark jute (Corchorus olitorius L.) under Terai region of West Bengal. 2018; 6(3): 18-21.