Effect of interaction of bioinsecticides and a carbamate insecticide on the larvae of the cotton leafworm, Spodoptera littoralis (boisd.), by successive applications

I., Abd El-Kareem S. M.; S., El-Akad A.; A., Hussein M.; A., El-Banna A.; R., Fahmy A.; K., Bekheit H.

doi:10.21608/eajbsa.2010.15183

	Effect of interaction of bioinsecticides and a carbamate insecticide on the larvae of the cotton leafworm, Spodoptera littoralis (boisd.), by successive applications
Egyptian Academic Journal of Biological Sciences. A, Entomology
Article 2, Volume 3, Issue 2, December 2010, Page 11-17 PDF (559.78 K)
Document Type: Original Article
DOI: 10.21608/eajbsa.2010.15183
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Authors
Abd El-Kareem S. M. I.¹; El-Akad A. S.²; Hussein M. A.²; El-Banna A. A.²; Fahmy A. R.²; Bekheit H. K.¹
¹Plant Protection Research Institute, Dokki, Giza
²Faculty of Science, Ain Shams University, Abbasia, Cairo
Abstract
Four bioinsecticides and a carbamate insecticide were bioassayed against the cotton leaf worm, Spodoptera littoralis, larvae by separate and/or successive applications. The obtained results reveal that Protecto was the most potent bioinsecticide compared with Viruset, Profect, and Bioranza. The obtained data also prove that the chemical insecticide, Kuik, was very toxic to the tested larvae. Successive applications with the bioinsecticides at different concentrations (LC₂₅, LC₅₀, and LC₉₀) then LC₂₅ of Kuik showed very promising results manifested by an outstanding increase in second and fourth larval instar mortality. Treatment of 2^nd and 4^th instar larvae with Protecto, Viruset, and Profect prolonged larval duration while treatment with Bioranza reduced larval duration. It was also observed that egg number and hatchability were affected by bioinsecticidal treatment.
Keywords
bioinsecticides; Carbamate . Cotton leafworm


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