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Prof. Ezzat Farag Awad El-Khayat :: Publications:

Title:
THE INFLUENCE OF SOME INSECT GROWTH REGULATORS AND BIO-INSECTICIDES AGAINST COTTON LEAFWORM AND SOME ASSOCIATED PREDATORS UNDER FIELD CONDITIONS
Authors: Desuky, W. M. , E. F. EI-Khayat2, M. M. Azab 2 and M. M. Khedr1
Year: 2012
Keywords: Not Available
Journal: Not Available
Volume: Not Available
Issue: Not Available
Pages: Not Available
Publisher: Not Available
Local/International: Local
Paper Link: Not Available
Full paper Ezzat Farag Awad El-Khayat_1 001.jpg
Supplementary materials Not Available
Abstract:

Experiments were carried out at Zagazig district, Sharqia Governorate during two successive seasons, 2007 & 2008 to evaluate the toxicity of some insecticides against 5. llttora/is larvae infesting cotton cultivations and some associated common predators. Chlorpyrifos and methoxyfenozide were the most potent insecticide in both initial and residual effect that caused highly significant reduction in the infestation rates of the pest as compared to other treatments at the initial and residual effects that recorded (98.21±0.783, 82.55±2.444%) as initial effect and (93.34±2.599, 85.32±2.195%) as residual effect during 2007 while during 2008 season t recorded (96.01±0.723, 83.97±3.462%) and (89.89±2.715, 86.34±3.398 %) for initial and residual effect, respectively. Considering the initial and residual effects of the rest treatments, it could be arranged descendingly as teflubenzuron, tebufenozide, Tracer and finally Dipel 2X at both tested seasons. Chiorpyrifos and methoxyfenozide were the most toxic insecticides causing the highest significant reduction in the predator numbers that recorded (79.81±3.544, 24.73±2.162%) and (66.81±5.418, 29.36±3.468%) at 2007 and (71.60±3.84, 23.50±1.799%) and (64.91±3.569, 26.78±3.548) at 2008 in the initial and residual effects, respectively. Followed by Tracer, teflubenzuron, tebufenozide and Dipel 2X during the two successive seasons

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