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Infestation Patterns of fruit fly was observed in fruits of different ripening stages of guava and also at different parts of the fruit (Top, middle and lower) under field conditions. The population of fruit fly was found in the orchard throughout the year with peak during the guava fruiting period. Fruit fly preference on green fruits did not show any pattern of incidence. However, fruit fly infestation increased slowly from July to reach its peak during third week of August in turning stage of fruits (38.89% infestation) and fourth week of August in ripe fruits (76.67 % infestation). Turning and ripe stages of fruit were most infested by B. dorsalis. In contrast, green fruits were less used by females for egg laying and also they preferred to oviposit on the top part followed by middle and the bottom part of turning and ripe guavas even though such preference did not exist in green fruits of guava
Keywords: Fruit fly, Ripening stages, Infestation, Fruit part, Guava