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STUDIES ON A NEW INSECTICIDE (SYNPHONATE) TO CONTROL MULBERRY GEOMETRID(Hemerophila atrilineata BUTLER)

Wu Fuan; Tian Lidao; Cheng Jialing(The Sericultural Research Institute,Chinese Academy of Agricultural Sciences,Zhenjiang 212018, China)  
Synphonate,a new insecticide mixture,was obtained with the best emulsication andstable emulsive character from 5 samples consisting of combined formulations and synergist. Its combination selected from 10 ones of 5 formulations possessed the maximum coefficient factor to 5th instar mulberry geometrid larvae by Potter-spraying. Its combination proportion revealed the optimum in calculated cotoxity coefficients and applicationrates with the peak synergistic degree and the best spray-concentration. The Controllingefficacy of 200 mg/kg Synphonate solution was over 90% to mulberry geometrid byspraying in the field and the residuary toxicity to the domestricated silkworm was 12 days.
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