Comparison the effect of DG oil with Spirotetramat and Dinotefuran on common pistachio psylla, Agonoscena pistaciae Burckhardt & Lauterer (Hem.: Aphalaridae) in different cities of Iran

The common pistachio psyllid, Agonoscena pistaciae is a key pest of pistachio trees in Iran. Both adults and nymphs cause great economic damages by sucking sap and produce large amounts of honeydew. The continued use of pesticides to control A. pistaciae leads to resistant of its populations to several pesticides and inefficiencies in biological control, resulting in pest outbreaks.  In the present study, Field experiments were conducted during 2019–2020 on pistachio trees, the Ahmad Aghaei cultivar, in Kerman, Yazd, Qom, Khorasan Razavi, Khorasan Shomali, Khorasan Jonoubi, Semnan, Fars, Markazi, and Esfahan provinces to evaluate the effect of DG oil on A. pistaciae in comparison with the two pesticides Spirotetramat and Dinotefuran. The sampling was carried out a day before spraying and 1, 3, 7, 14, 21 and 28 days post-treatment. The experiments were conducted based on complete randomized blocks with four treatments (included the recommended dosage of DG oil (0.5 liter1000 liter water/ha), Spirotetramat (1 liter/1000 liter water/ha), Dinotefuran (0.75 kg/ 1000 liter water/ha and control (Spraying with water) and four replications. Results showed a high performance of DG oil starting from the first day after spraying and Continued for four weeks. Compared to Spirotetramat and Dinotofuran, DG oil had a suitable and satisfied performance. DG oil is recommended as the most environment-friendly and IPM compatible compound to control A. pistaciae.