Effect of Different Insecticides on Eggs and Nymphs of Agonoscena pistaciae (Hemiptera: Aphalaridae) under Field Conditions

Pistachio (Pistacia vera L.) is one of the most important, valuable and strategic horticultural productions in Iran. The common pistachio psyllid, Agonoscena pistaciae Burckardt and Lauterer (Hemiptera: Aphalaridae), is  the most important pest Iran's in pistachio orchards. The damage of this pest to pistachio product is economic, every year, therefore it is necessary to control the pest with chemical pesticides. In this study, the effects of some insecticides from different classes including spirotetramate (Monvento®, SC 10%), spiromesifen (Oberon®, SC 240), dinotefuran (Starkle®, SG 20%), chlorfluazuron (Atabron®, EC 5%), thiametoxam + lambda cyhalothrin (Eforia®, SC 247), phenoxycarb + lufenuron (Lufox®, EC 105) and hexaflumurom (Consult®, EC 10%) was investigated on the reduction of population density of eggs and nymphs of common pistachio psyllid Experiments were conducted as randomized complete block design with four replicates under field conditions. The sampling was done 3, 7, 14, 21 and 28 days after treatment. The highest and lowest percent  reduction of egg population  were observed in spirotetramate treatment (99.27%) at 21 days after-treatment and phenoxycarb + lufenuron (0%) and chlorfluzuron treatment (0%) at 3 and 28 days after-treatment, respectively. The highest and lowest percent reduction of nymphs were recorded at spirotetramate treatment (99.54%) at 28 days after-treatment and dinotefuran treatment (0%) at 7 days after treatment, respectively. The results of this study showed that using of spirotetramate due to its different mode of action and environment friendly insecticides such as hexaflumurom, chlorfluazuron and phenoxycarb + lufenuron could be acceptable,  in the integrated management of A. pistaciae.