SEASONAL INCIDENCE OF FRUIT FLY IN GUAVA CV. TAIWAN WHITEThirumala Devi Giddi and N. EmmanuelAbstract Taiwanese guava was most famous for its crisp texture, sweet crispy taste with harvesting character as twice per year during February to March and July to August. The yield and quality of Taiwan guava is restricted by various insect species. Among that, fruit fly is the major one damaging about much portion of the yield and quality. So, the present study was conducted on seasonal incidence of fruit fly at two guava gardens i.e., College of Horticulture and farmerâs orchard in Venkataramannagudem, West Godavari, Andhra Pradesh. The peak activity of fruit fly, Bactrocera dorsalis maggot population (15.8 maggots/fruit and fruit infestation (30.80 percent) was observed during 7th standard meteorological week in first season and during second season, the peak activity of fruit fly is observed on 37th standard meteorological week with maggot population of 18.12 maggots per fruit and fruit infestation of 34.66 %. The incidence of fruit fly showed significant but negative correlation with maximum and minimum temperature in first season and second season, rainfall is negatively correlated in first season while it is highly significant and positively correlated in second season, the maximum relative humidity and minimum relative humidity is positive and highly significant in both the seasons. |