STUDY ON INSECTICIDES AND OTHER MEASURES USED BY THE FARMERS AGAINST FRUIT FLY IN BITTER GOURD

Abstract

Two intensive bitter gourd cultivated area, Dhaka and Norshingdi districts were selected for conducting the study. The data obtained for different characters were statistically analyzed to find out the significance of the different farmers practices and chemical used by the respondents' farmers on yield contributing characters, yield, economics return and arthropod diversity in bitter gourd. In Dhaka district, the highest sample farmers (33.00%) practiced FP1 and the lowest sample farmers (6.67%) practicing FP,. On the other hand in Norshingdi district, the highest sample farmers (40.00%) practiced FT'1 and the lowest sample farmers (6.67%) practiced FP4. Fruit infestation by number and by weight varied for different FPs. in Dhaka district, the lowest fruit infestation by number and by weight was observed in FP5 (8.46% and 7.94% respectively) while it was the highest by number and by weight (10.25% and 11.08% respectively) in PP1. In Norshingdi district, the lowest fruit infestation by number and by weight was observed in FP5 (8.061/6 and 8.13% respectively) while it was the highest by number and by weight (11.08% and 10.49% respectively) in FP1. Considering the BCR for different farmers practices in Dhaka district, it was maximum in 1W5 (2.28) while it was minimum (2.06) in FP1. On the other hand in Norshingdi district, the BCR was maximum in 1W5 (2.10), while it was minimum (1.85) in PP1. Similarly chemical used by respondent farmers in Dhaka district, the highest sample farmers (33.33%) used IC2, while the lowest sample farmers (6.671/6) used IC4. On the other hand, in Norshingdi district, the highest sample farmers (40.00%) used IC3 and the lowest sample farmers (6.67%) used IC4. Again, fruit infestation by number and by weight varied for different insecticide combinations, in Dhaka district, the lowest fruit infestation by number and by weight was observed in IC, (8.04% and 7.391/o respectively) while it was the highest by number and by weight (10.08% and 9.82% respectively) in IC1. In Norshingdi district, the lowest fruit infestation by number and by weight was observed in IC, (9.11% and 8.00% respectively) while it was the highest by number and by weight (10.88% and 1002% respectively) in IC1. In terms of total fruit yield in Dhaka district, it was the highest in IC, (23.92 tlha), while it was the lowest (21.25 t/ha) in IC1. In Dhaka district, the 13CR for the combined use of different chemical was maximum in IC5 (2.04), while it was minimum (1.86) in IC1. On the other hand in Norshingdi district, the BCR was maximum in IC, (2.06), while it was minimum (1.83) in IC1.