Toxicity and biochemical impacts of some new insecticide mixtures on cotton leafworm Spodoptera littoralis (Boisd.)

Ahmed E. M. ABD El-Mageed and Shehata E. M. Shalaby
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Ahmed E. M. ABD El-Mageed: Plant Protection Research Institute, Agricultural Research Centre, Dokki, Giza, Egypt
Shehata E. M. Shalaby: Pests & Plant Protection Department, National Research Centre, Dokki, Giza, Egypt

Plant Protection Science, 2011, vol. 47, issue 4, 166-175

Abstract: The susceptibility to five new insecticide mixtures: chlorosan, feroban, cygron, engeo, and kingbo was studied in the 2nd and 4th instar larvae of the cotton leafworm Spodoptera littoralis (Boisd.). The efficiency and residual effects of these compounds against S. littoralis under field conditions were also investigated. Obtained results revealed that feroban was the most effective compared with the other toxicants, while engeo was the least toxic insecticide in both instars after 2 and 5 days from treatment. Data also indicated that feroban had the longest half-life (Lt50) while engeo recorded the shortest one. Biochemical analysis showed that the tested compounds caused pronounced changes in acetyl cholinesterase and phenol oxidase.

Keywords: insecticide mixtures; toxicity; enzymes; Spodoptera littoralis (search for similar items in EconPapers)
Date: 2011
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpps:v:47:y:2011:i:4:id:3-2011-pps

DOI: 10.17221/3/2011-PPS

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