ABUNDANCE OF WHITE FLY AND POD BORER ON DIFFERENT VARIETIES OF MUNGBEAN

Abstract

The experiment was conducted at the central farm of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka, Bangladesh during the period from October 2014 to February 2015 to study the abundance of white fly and pod borer on different varieties of mungbean. The study comprised with six varieties as treatment and the name of the mungbean varieties are, V1: BARI Mung-1, V2: BARI Mung-2, V3: BARI Mung-3, V4: BARI Mung-4, V5: BARI Mung-5 and V6: BARI Mung-6. The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications. The lowest number of whitefly/10 leaves (2.33) was observed from V6 and the highest number (7.47) from V1. The lowest number of pod borer/10 plants (1.27) was found from V6, while the highest number (3.67) from V1. At early growing stage, the lowest leaf infestation/plant (3.25%) was recorded from V6, while the highest (7.48%) from V1. At mid growing stage, the lowest leaf infestation/plant (3.87%) was recorded from V6, whereas the highest (9.49%) from V1. At late growing stage, the lowest leaf infestation/plant (4.01%) was recorded from V6, whereas the highest (10.21%) from V1. At early pod development stage, the lowest pod infestation/plant (3.91%) was recorded from V6, while the highest (8.34%) from V1. At mid pod development stage, the lowest pod infestation/plant (5.70%) was recorded from V6, while the highest (9.86%) from V1. At late pod development stage, the lowest pod infestation/plant (6.16%) was recorded from V6, while the highest (10.67%) from V1. The highest yield (1.48 t/ha) was observed from V6, while the lowest (1.22 t/ha) from V1. It was revealed that BARI Mung-6 was superior mungbean variety followed by BARI Mung-5 among the studied variety in terms of minimum insect pests infestation and yield contributing characters and yield.