Study on integrated control against oriental fruit fly [Bactrocera dorsalisi (Hendel)] in guava orchard.

[Objective] The paper was to explore the damage, occurrence pattern and integrated control methods of oriental fruit fly [Bactrocera dorsalis(Hendel)] in Nanning region of Guangxi Province.[Method] Using fixed system survey method, with fruit fly attractants as the materials, the occurrence dynamic of oriental fruit fly adult in guava orchard was investigated. The control effects of the methods such as fruit fly attractants, fruit bagging, cleaning park to pick up fallen fruit and timely spraying pesticide against the pest were also studied. [Result] Oriental fruit fly had two damage peak periods in Nanning region of Guangxi Province (May to June, August to September). Through the integrated control measures of trapping agent for male flies, timely spraying, fruit bagging and cleaning park to pick up fallen fruit, the population density in guava orchard dropped significantly. The fruit damage rates of guava in research base were only 6.67%-7.33% during the peak period of oriental fruit fly in June 2008, while they were 90.53%-98.00% in control area, obtaining good control effect against the pest. [Conclusion] The method used in the study preliminarily restored the yield losses of guava, which also provided basis for the preparation of overall strategy against oriental fruit fly in the region.