Bionomics of Crisicoccus juniperus (Tang) and its control
Duan Ban-Suo; Yang Rui-Zhi; Li Ming-Zhao (Baotou Landscape Research Institute, Inner Mongolia 014010, China).
Crisicoccus juniperus (Tang) as a serious pest insect of Juniperus rigida Sieb. et Zucc. has two generations in Baotou, Inner Mongolia and overwinters 2nd instar nymhp. Two peaks for nymphs damage emerged in the mid-end or May and July, respectively. The results for the chemical control showed that 95% insecticidal effect could be obtained by spraying 1: 1500 -2000 mixed diluent of 2.5% deltamelthrin +40% omethoate (1; 3) or 1; 1000 mixed diluent of 40% omethoate +80% dichlorvos two or three times at the nymph period of 2nd generation.
【CateGory Index】： S763