Seasonal variation in susceptibility of the pear psyllid, Cacopsylla permixta (Hemiptera: Psyllidae) to selected insecticides

Although Cacopsylla pyri Forster and Cacopsylla pyricola Linnaeus have long been considered as more significant pests of pear trees around the world, Cacopsylla permixta Burckhardt and Hodkinson is the most significant pest in some parts of Iran, especially in pear gardens of Karaj. Current control...

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