Abstract
The different hosts available throughout the world is a major source of occurrence of insect pest population. The distributions of furgivorous pest have variety of host plant. The forecasting and prediction are the core of the integrated management of these harmful fruit eating pests. The melon fruit fly Bactrocera cucurbitae (Coq.) is considered as a serious pest of cucurbit vegetables throughout the world. The management of the pest needs a proper monitoring before application of any management tool. Cue-lure of Bactrocera cucurbitae (Coq.) in bitter gourd field” was used for monitoring B. cucurbitae population in different interval days i.e. after 15days, 25days, 35days and 45days were conducted under field conditions during 2017. B. cucurbitae as a serious pest of vegetables and fruits in Pakistan. Male flies were attracted to cue lure, which was placed in traps, on different interval days. The peak population was observed during first week of July. The highest population (109.04±14.57) was observed after 15 days application of cue lure followed by 108.26±14.47 after 25 days, 99.23±13.26 after 35 days and 86.98±11.62 after 45 days application of cue lure respectively. Correlation with abiotic factors i.e., temperature and relative humidity (%) had highly significant (P = <0.001) positive correlation on the population incidence of melon flies.