Effectiveness of several acaricides on broad mite, Polyphagotarsonemus latus was evaluated in laboratory studies. Acequinocyl was highly effective against egg, larva and stationary phase, and adult female. Spirodiclofen was highly effective against larva and stationary phase but showed somewhat low toxicity to egg and adult female. Ethoxazole was ineffective against egg and adult female but exhibited high toxicity to larva and stationary phase. Bifenazate was ineffective against all stages of P. latus. In surviving adult females treated with acaricides, there was no obvious effect on number of eggs laid with the exception of bifenazate and egg hatchability was not affected. In the test with mixed stages, acequinocyl and spirodiclofen were showed satisfactory efficacy for the control of P. latus.
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