Abstracts
Common pistachio psylla (CPP), Agonoscena pistaciae is a key pest of pistachio gardens in Iran and world and caused the serious problems for farmers. In the current situation, chemical control is the effective method of control for reduces the damage of this pest in pistachio gardens but this insecticides can cause serious problem for the environment and resistant in CPP. Considering the increasing problems of using chemical pesticides in product and environmental health and with the aim of investigating the effect of new compounds on this pest, in this research: the effect of Potassium silicate(1*1000)+ Imporo(0.5*1000), Soloptas (2*1000)+ Urea(2.5Kg*1000), Sulfur Wettable (30Kg*1000),Rika(3*1000), Rui Agro(1*1000) were study on egg and nymph of CPP in kerman province in a randomized complete block design with four replications. Spraying was done in July of 2016. Sampling of leaves (10 leaves from 5 of treated pistachio trees) was done in 1, 3, 7, 14 and 21 days after spraying. In the Lab. the number of nymph and egg on each leaf were countered separately for each treatment. The correct mortality percent was calculated by Handerson- tilton formula and competitions were done by SPSS software. Comparison of average mortality of nymph of CPP indicates that sulfur, Rui Agro and Rika treatment have the highest effect (99.66, 97.39 and 88.01% respectively) and the least effect was related to potassium silicate treatment with Imporo. According to the results of this research, sulfur treatment has the highest effect on reduce of egg population percentage in compare to control (71.24%).