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SYNTHESIS OF ~(14)C-LABELING OMTHOATE Physiological responses of wheat seedlings to omethoate stress Resistance of Tetranychue uriticae Koch to several insecticides and their mixtures OMETHOATE-RESISTANT CARMINE SPIDER MITE(TETRANYCHUS CINNABARINUS BOISDUVAL):SELECTION OF R-STRAIN AND GENTIC ANALYSIS