| 摘要 |
<p>The invention relates to insecticidal and acaricidal compositions having a synergistic effect and containing, as the active ingredient, a combination of ethion with a pyrethroid of the general formula:- <IMAGE> wherein R represents a hydrogen atom or the cyano radical and R1 represents the 2,2-dimethyl-3-(2,2-dichlorovinyl)- cycloprop-1-yl radical, the 2,2- dimethyl-3-(2,2-dibromovinyl)- cycloprop-1-yl radical, the 2,2- dimethyl-3-(2-methylprop-1-enyl)- cycloprop-1-yl radical or the 1-(4- chlorophenyl)-isobut-1-yl radical, such as cypermethrin decamethrin, fenvalerate and permethrin and a method for the treatment of plants to combat crop-destroying arthropoda which comprises applying such compositions to the plants. The compositions and method are more particularly intended for combating plant-eating mites which have become resistant to organo-phosphorus pesticides.</p> |
