Effect of various insectides on Pseudaulacaspis pentagona and its parasitoeid on Kiwifruit trees (Actinidia chinensis)

Subject Areas : Plant Protection

Esmaeil Gholamian ¹ , Sirous Aghajanzadeh ² , Reza Fifaei ³ , Behrouz Goleyn ⁴

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Received: 2012-08-09 Accepted : 2014-02-19 Published : 2013-08-23

Keywords:

Abstract :

Armored scale, Pseudaulacaspis pentagona, is the most important pest on kiwifruit in the North of Iran.The aim of this project was theprecise usage ofwinter oil spray and pesticides for control the pest with minimum side effect on its parasitoeid (Prospaltella berlesei). For evaluating of emulsified oils against the pest in the winter the following treatments were used: emulsified oil at rate of 0.5%, 1%, 1.5%, 2%, Chlorpyrifos 0.15% + emulsified oil 1% and control (only water). In addition, the effect of Pyriproxyfen, Buprofezin and Chlorpyrifos at rate of 0.05, 0.05 and 0.15 % respectively in comparison with control were sprayed on crawlers of P. pentagona in the spring. The mortality percentage of pest and its parasitoide was evaluated. The results indicated that, Chlorpyrifos 0.15% + emulsified oil 1% and emulsified oil 2% caused the most mortality in over wintering generation of pest and its parasitoid too.Also, spring application of Chlorpyrifos 0.15% caused the most mortality in crawlers and parasitoid while Pyriproxyfen and Buprofezin had reliable effect on pest with moderate effect on its parasitoid and can use instead of organophosphate pesticides.

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