Screening of Highly Effective Pesticides Against Polyphagotarsonemus latus
TIAN Tian 1，2，ZHANG Youjun 2，WANG Shaoli 2*
1 College of Agriculture，Yangtze University，Jingzhou 434025，Hubei，China；2 Institute of Vegetables and Flowers，Chinese
Academy of Agricultural Sciences，Beijing 100081，China
Abstract：The broad mite，Polyphagotarsonemus latus（Banks） is an important spider mite in agriculture
causing serious regional damage．Chemical pesticide application is a major measure to control this mite．
But，currently there are very few pesticides registered against P. latus in China．In order to screen and obtain
chemical pesticides highly effective in controlling P. latus，this experiment conducted indoor efficacy evaluation
of 14 common pesticides/acaricides at routine recommended doses on this mite．The results showed that
abamectin，chlorfenapyr and bifenthrin had high fast-acting effect against P. latus．The pesticide effect could
reach over 85% 1 day after pesticide treatment，significantly higher than that of the other testing pesticides．
3 days after treatment，the efficacies of abamectin，bifenthrin and pyridaben were higher over 90%．7 days
after treatment，the pesticide effects of abamectin，bifenthrin and pyridaben reached high up to 100.00%．The
pesticide effects of chlorfenapyr，spinetoram，cyflumetofen，b-azolemiteacrylic，cyenopyrafen，etoxazole，
fluazinam and bifenazate · etoxazole were all over 90%，showing favorable persistance．In conclusion，
abamectin，bifenthrin，pyridaben and chlorfenapyr have high prevention and control effict on P. latus，and
excellent fast-acting and persistent effect．They could be used coordinately or alternatively with the above
mentioned fine persistent pesticides for chemical prevention and control of P. latus in fields．
