Distribution of population of immature stages of common pistachio psyllid, Agonoscena pistaciae within the tree and development of sampling strategy
Zahra Sheibani Tezerji, Mahmoud Shojai, Mohammad Shojaaddini, Sohrab Imani, Mohammad Reza Hassani
The distribution of population of egg and different nymph stages of common pistachio psyllid, Agonoscena pistaciae Burckhardt and Lauterer (Hemiptera: Psyllidae) within thepistachio tree canopy were investigated in Rafsanjan during 2013 and 2014. Also, in this study, the preference of pest to lay egg and activity on young, mature and old leaves, light and dark green leaves and leaves available in shade and sun were evaluated. The results indicate that common pistachio psyllid infestation was higher significantly in the upper and middle parts of the tree canopy compared with the lower parts. Means population density of egg and nymph were higher significantly on mature, dark green leaves and leaves in sun in comparison to young, light green leaves and leaves available in shade. Therefore, the results of this study indicated that common pistachio psyllid population is not randomly distributed in various sections and leaves of the pistachio tree.
Zahra Sheibani Tezerji, Mahmoud Shojai, Mohammad Shojaaddini, Sohrab Imani, Mohammad Reza Hassani. Distribution of population of immature stages of common pistachio psyllid, Agonoscena pistaciae within the tree and development of sampling strategy. J Entomol Zool Stud 2015;3(4):395-399.