Study on the population dynamics of fruit flies (Bactrocera spp) in guava orchard in southwest Haryana

The experiments on population dynamics of fruit flies (Bactrocera dorsalis and B zonata) were carried out in guava orchard of CCS Haryana Agricultural University, Regional Research Station, Bawal, Haryana during 2020-21. The fruit flies were recorded at weekly interval by using methyl eugenol pheromone trap. Results showed that fruit flies were present in the field from April to November in guava orchard in southwest Haryana. The highest number of fruit flies (132 /trap/week) were recorded during last week of August 2020. The peak of fruit flies population coincided with the ripening of guava fruits. The fruit fly population exhibited significant positive correlation with minimum temperature, morning and evening relative humidity and rainfall. The results of the present study revealed that peak infestation (75.0%) in guava fruits was during last week of August. These fruit flies were recorded as a serious pest of guava fruits in southwest Haryana.