STUDY ON THE CONTROL EFFECT OF SOPHORA AVESCENS·AZADIRACHTIN AND 5％ AVI·LUFENURON EC ON GRASSLAND CATERPILLARS IN QINGHAI
The control effects of two biological insecticides,Matrine-Indianmedia japonica element and A bam ectine and Lufenuron 5％EC,at three different doses on Gynaephora qinghaiensis were tested.The results show,the optimal control concentration was 225ml/hm2 formatrine-Indianmedia japonica element and 150ml/hm2 for A bam ectine and L ufenuron 5％EC,with an average control effect of over 90％.The two chemicals are safe for pasture and livestock and can be used as reserve medicines for grassland caterpillar control in Qinghai Province.
Matrine-Indianmedia japonica elementA bam ectine and Lufenuron 5％ECGrassland caterpillar
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