The effect of several inorganic compounds on oviposition and egg hatching rate of common pistachio psylla Agonoscena pistaciae Burckhardt & Lauterer (Hem.: Psyllidae) in orchard conditions
Subject Areas : entomology and othea arthropods
K. Ahmadi
1
,
m. asadi
2
,
B. Valizadeh
3
1 - Department of Plant Protection, College of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran
2 - گروه گیاه پزشکی، دانشکده کشاورزی، دانشگاه شهید باهنر کرمان
3 - گروه گیاه پزشکی، دانشکده کشاورزی، دانشگاه شهید باهنر کرمان
Keywords:
Abstract :
Common pistachio psylla, Agonoscena pistaciae Burckhardt & Lauterer is a serious economic pest of pistachio orchards in the world. Chemical control is a widely applied method to manage this pest problem. The intensive use of chemical insecticides has led to the development of resistant populations of the common pistachio psylla and environmental hazards. It seems that the use of inorganic compounds as insecticides is one of the ways to reduce the residual amount of dangerous toxins. In this study, the insecticidal effects of 10 kinds of inorganic compounds (subarkose, calcite, biomicrite, granite, coarse crystal sparitic limestone, monzogabbro, fine crystal sparitic limestone, monzodiorite, oomicrite and pelsparite) on oviposition and egg hatching rate were investigated. The results showed that the treated leaves with monzogabbro (0.00 ± 0.00), granite (0.54 ± 0.01), biomicrite (1.50 ± 0.21) and calcite (1.56 ± 0.17) at a concentration of 50 g/l were reported to have the greatest decrease in terms of the oviposition rate of the pest in the first year. The results of oviposition rate in the second year indicated that the treated leaves with biomicrite had a significant increase compared to calcite, granite and control. This study also showed that biomicrite treatment could not make any changes in the process of egg hatching. So, based on the results of the present study, monzogabbro, granite and calcite can be used to control pistachio psylla in pistachio orchards.
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