Eco-friendly management of pod borer complex in pigeon pea

Abstract

An experiment was conducted during Kharif, 2016 and 2017 at the Regional Research and Technology Transfer Station, Bhawanipatna to find out suitable eco-friendly management practices of pod borer complex in pigeon pea. The trial was laid out in randomized block design with three replications taking thirteen treatments. Experimental results showed that the lowest mean population of spotted pod borer larvae (0.02/plant) was recorded in the treatment Bt @ 1 kg/ha + Flubendiamide 480 SC @ 200 ml/ha followed by Ozoneem @ 1.5 lit./ha + Flubendiamide 480 SC @ 200 ml/ha with 0.06/plant and Bt @ 1 kg/ha + Spinosad 45 SC @ 200 ml/ha with 0.07/plant as compared to the control (3.03/plant). Two times spraying of Ozoneem @ 1.5 lit./ha + Flubendiamide 480 SC @ 200 ml/ha recorded the lowest mean larval population (0.02/plant) of H. armigera followed by Bt @ 1 kg/ha + Flubendiamide 480 SC @ 200 ml/ha with 0.04/plant, Bt @ 1 kg/ha + Spinosad 45 SC @ 200 ml/ha with 0.07/plant and Bt @ 1 kg/ha + Emamectin Benzoate 5 SG @ 200 g/ha with 0.09/plant compared to the untreated control (3.22 larvae/plant). Lowest spiny pod borer population was reported in Bt @ 1 kg/ha + Flubendiamide 480 SC @ 200 ml/ha and Bt @ 1 kg/ha + Spinosad 45 SC @ 200 ml/ha (0.02 larvae/plant) compared to control (1.50 larvae/plant). Highest grain yield (14.6 q/ha) was recorded in Bt @ 1 kg/ha + Flubendiamide 480 SC @ 200 ml/ha followed by Ozoneem @ 1.5 lit./ha + Flubendiamide 480 SC @ 200 ml/ha with 14.2 q/ha. Bt @ 1 kg/ha + Flubendiamide 480 SC @ 200 ml/ha recorded the highest B: C ratio (2.19) followed by Ozoneem @ 1.5 lit./ha + Flubendiamide 480 SC @ 200 ml/ha (2.17).