The Effect of Liquid Detergent on Common Pistachio Psylla, Agonoscena Pistaciae, Soil and Plant

The common pistachio psylla, Agonoscena pistaciae (Homoptera: Psyllidae) is known as the key pest of pistachio trees in Iran. This study was carried out during three years to test the effect of dish washing detergent (Rika) against this pest in a randomized complete block design with five treatments and four replicates. The treatments were including: 1) 3500ml dish washing detergent per 1000 liter water 2) 2000ml dish washing detergent per 1000 liter water 3) 1000ml dish washing detergent + 500ml pesticide (Amitraz) per 1000 liter water 4) 1500 ml pesticide (Amitraz) per 1000 liter water and 5) water (control). Amitraz was used as a common insecticide in compare to different concentrations of dish washing detergent (Rika). The results showed that, the percentage of mortality of Amitraz treatment was higher than other treatments (1, 2, and 3) in 14th and 21st days after spraying, furthermore, there were significant differences between Amitraz and other treatments.