IMPACT OF SOME ECOFRIENDLY OPTIONS ON THE INCIDENCE AND DAMAGE POTENTIAL OF POD BORERS AND YIELD OF MUNGBEAN

ABSTRACT: Study was carried out in the farmer’s field at Sonakhali, Barguna sadar, Barguna district of Bangladesh during January to April 2017 to evaluate the impact of different ecofriendly treatments against pod borers of mungbean. Variety Barimung 6 was used as study material. Results revealed that the lowest mean number of pod borer (1.75 Plot-1 at 50 DAS & 2.50 plot-1 at 60 DAS), the highest percent of pod borer reduction (72.0% at 50 DAS & 72.22% at 60 DAS) over control, the lowest mean pod damaged (4.00 m2 at 50 DAS & 6.50/m2 at 60 DAS) and the highest percent of pod damage reduction (76.12% at 50 DAS & 74.25% at 60 DAS) over control were found in plots treated with Virtako 80 WG @ 0.15g L-1 of water. The highest yield (1075.00 kg ha-1) and net return (Tk. 14425 ha-1) were obtained from Virtako 80WG treated plot while the highest marginal benefit cost ratio (2.67) was obtained from Raise 20 SL treated plots. From this study Virtako 80 WG @ 0.15g L-1 of water was found to be the best option for the suppression of pod borers and produced maximum yield of mungbean. Raise 20 SL @ 3ml L-1 of water at 40 DAS gave the highest marginal benefit cost ratio. Hence it could be the best option as second choice to suppress pod borers in mungbean. 

Keywords: Ecofriendly options, benefit cost ratio, Pest incidence, Vigna radiata.