OCCURRENCE PATTERN OF ERIOCOCCUS LAGEROSTROEMIAE KUWANA AND ITS INTEGRATED CONTROL

Eriococcus lagerostroemiae Kuwana is one of the main pests attacking Punica granatum in Mengzi county, Yunnan province. In a study reported in this paper, the pest was found to have 4 overlappling generations in a year and overwinter as adults and nymphs. The adults or nymphs, mainly in the first and second generations, entered the calyx tube of the fruit or the caps between fruits or between the fruit and the leaf and caused damage, resulting in infection of the fruit by Zythai versoniana Sacc through the wound. So E. lagerostroemiae is the vector of Z.versoniana. Measures of integrated control reduced the infection percentage per tree and per fruit from 85%～95% and 75%～90% to 20%～25% and 10%～15%, respectively.