Trees crown can be regarded as main factor contributing to the conservation and support of soil in many ecosystems including semiarid forests in Zagross. The aim of this study was to find out the effect of tree crown of pictachio (Pistacia atlantica Desf) on N, OC, P, pH, EC and the texture of the soil. Soil samples were collected in and outside the crown of 5 single pistachio trees on four dir...

This research aims to introduce the water supply method required for pistachio orchards in semi-arid climatic regions using the rainwater harvesting technique. For this purpose, a rain catchment system with an area of 1000 m2 was constructed at the Tasuj Station site. Based on the mean annual rainfall of the region, runoff threshold, runoff coefficient for insulation surfaces and the area of th...

In 1996 and 1997 pistachio orchards in Isfahan Province were surveyed to determine the presence and damage levels by Eurytoma plotnikovi Nikolskaya and Megastigmus pistacia Walker. In order to investigate seasonal population fluctuation of E. plotnikovi, larval, pupal and adult stages were monitored in three orchards. In each orchard, 200 nuts with more than 50% infestation to overwintering lar...

In order to evaluate the impacts of oleo-gum resin extraction periodicity on natural regeneration of wild pistachio (Pistacia atlantica subsp. kurdica), three different forest areas in Kurdistan province, west of Iran, were selected based on difference extraction periodicities (regular periodicity, irregular periodicity and without periodicity). Then homogenous unit maps in GIS produced, and on...

In 1996 and 1997 pistachio orchards in Isfahan Province were surveyed to determine the presence and damage levels by Eurytoma plotnikovi Nikolskaya and Megastigmus pistacia Walker. In order to investigate seasonal population fluctuation of E. plotnikovi, larval, pupal and adult stages were monitored in three orchards. In each orchard, 200 nuts with more than 50% infestation to overwintering l...