2009•Guizhou nongye kexueRequires access
Biological activity analysis of Prodenia litura larvae which applied by insecticide combinations.
Cheng Ying, Jin JianXue, Zhongying Li, Fengliang Li
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Abstract
Toxicity test to the 4th instar larvae of Prodenia litura applied by binary combination of 8 insecticides was conducted to screen the optimal ratio of insecticides with highest biological activity to P.litura and provide reference for insecticides prevention and development of insecticides combination.The results showed that 1∶7.5 of fenpropathrin with hexaflumuron,1∶1,5∶1 and 15∶1 of hexaflumuron with emamectin benzoate,1∶7.5 of fenpropathrin with acephate,and 1∶1,5∶1 and 10∶1,12.5∶1,15∶1 and 17.5∶1 of chlorpyrifos with abamectin etc.could obviously improve the control effect to P.litura.The combination of beta-cypermethrin with hexaflumuron,acephate with deltamethrin had obvious antagonism to P.litura.