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Control Experiments of Ectropis Crepuscularia Pests

Chen Shunli; Ye Jianxiong(Resources & Environment Dept., Fujian College of Forestry, Nanping, Fujian 353001 )Chen Hongsheng; Zhang Chaoju ;Huang Zhen(Huaqiao Forest Farm of Guangze, Fujian 354001)  
With 40% Omethoate, 80% DDVP, 20% Pydrin and Bt etc, control experiments of chemical and biological insecticides against Ectropis crepuscularia were carried out by using the method of Latin square design,The variance analysis on the experimental data showed that :The difference between chemical insecticideswas very obvious and the effect of 20% Pydrin was the best. Among comparative experiments, the control effect of 20% Pydrin was the best, that of Bt was the second. The control effect depends obviously upon the concentration. The control effects carried out in lab. conformed to that in field.
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