Evaluation of Trichogramma and Kaolin against the pomegranate fruit moth, Ectomyelis ceratoniae Zeller (Lep.: Pyralidae) in Siah-Rud region, Iran
Subject Areas :
Keywords: pomegranate, Kaolin, Ectomyelis ceratoniae Zeller, Trichogramma,
Abstract :
Pomegranate fruit moth, Ectomyelis ceratoniaeZeller(Lep.: Pyralidae) is the most important factor in quantitative and qualitative decreasing of pomegranate production. It is also amongst the most important obstacles in pomegranate exportation. The larvae injure pomegranate crops by direct or indirect damage. Its control therefore has a key role in decreasing pomegranate yield both in orchards and storehouses. The current study was aimed to assess different pest control strategies in three hectares of pomegranate orchards of Siah-Rud region in Jolfa (Azarbaijan-e-Sharghi province) in 2010. The study was conducted on the basis of completely randomized block design (RCBD) with four treatments in three replications. The four treatments were: Trichogramma brassicae releasing, 6% Kaolin spraying, T. brassicae releasing plus 6% Kaolin spraying and finally the control. The results revealed that the minimum rate of infestation was 2.66% for Kaolin + wasp treatment that was significantly different from applying each of the wasp or kaolin alone. Besides, the rate of sun- burning and cracking of fruits in Kaolin-included treatments decreased to half as much as the other treatments. Furthermore, Kaolin utilization caused to a decrease in flower aborting rate. Evaluating of the parasitism rate of the host pest eggs demonstrated that parasitism rate reached to 31% in the released plots. As a result, Kaolin application in pomegranate orchards can lessen both biotic and abiotic damages to fruits.
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