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The role of foliar fertilizers in tolerance of the cotton leafworm to certain insecticides

Published online by Cambridge University Press:  27 March 2009

Omayma K. Moustafa ,
Z. M. El Attal  and
Amal F. Doban
Omayma K. Moustafa
Affiliation:
Central Agricultural Pesticides Laboratory, Giza, Egypt
Z. M. El Attal
Affiliation:
Central Agricultural Pesticides Laboratory, Giza, Egypt
Amal F. Doban
Affiliation:
Central Agricultural Pesticides Laboratory, Giza, Egypt
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Summary

Evaluation of some insecticides against nine strains of S. littoralis, selected with decamethrin and foliar fertilizers separately and their combinations for three successive generations, was conducted to elucidate the effects of fertilizers on the tolerance pattern. The results indicate that the selection with fertilizers induced a low level of tolerance to both cyolane and profenofos. The LC50 of chlorpyrifos for all fertilizers' strains was lower than that of the susceptible strain. The efficiency of cyolane and fenvalerate on strains developed by the selection with decamethrin-fertilizer combinations was remarkably increased. Since the selection with fertilizers has induced a tolerance to some insecticides such as cyolane and profenofos and as the efficiency of these insecticides was enhanced on strains developed by the pressure of decamethrinfertilizer combinations, it is preferable to use decamethrin simultaneously in admixture with foliar fertilizers for pest control.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 102 , Issue 1 , February 1984 , pp. 115 - 117
Copyright
Copyright © Cambridge University Press 1984

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References

El Attal, Z. M., Moustafa, O. K. & Diab, S. A. (1984). Influence of foliar fertilizers on the toxicity and tolerance to some insecticides in the cotton leafworm. Journal of Agricultural Science, Cambridge 102, 111–114.CrossRefGoogle Scholar
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