Toxicological and biological studies of some environmentally safe chemicals against Aphis gossypii glover
Keratum, A., Essawy, M., El-Khodary, A., El-Fakharany, S. (2001). Toxicological and biological studies of some environmentally safe chemicals against Aphis gossypii glover. EKB Journal Management System, 9(1), 33-54. doi: 10.21608/jpces.2001.459688
A. Y. Keratum; M. M. Essawy; A. S. El-Khodary; S. K. El-Fakharany. "Toxicological and biological studies of some environmentally safe chemicals against Aphis gossypii glover". EKB Journal Management System, 9, 1, 2001, 33-54. doi: 10.21608/jpces.2001.459688
Keratum, A., Essawy, M., El-Khodary, A., El-Fakharany, S. (2001). 'Toxicological and biological studies of some environmentally safe chemicals against Aphis gossypii glover', EKB Journal Management System, 9(1), pp. 33-54. doi: 10.21608/jpces.2001.459688
Keratum, A., Essawy, M., El-Khodary, A., El-Fakharany, S. Toxicological and biological studies of some environmentally safe chemicals against Aphis gossypii glover. EKB Journal Management System, 2001; 9(1): 33-54. doi: 10.21608/jpces.2001.459688

Toxicological and biological studies of some environmentally safe chemicals against Aphis gossypii glover

Journal of Pest Control and Environmental Sciences
Volume 9, Issue 1, April 2001, Pages 33-54    PDF (519.02 K)
Document Type: Original Article
DOI: 10.21608/jpces.2001.459688
Authors
A. Y. Keratum* 1; M. M. Essawy2; A. S. El-Khodary2; S. K. El-Fakharany2
1Department of Pesticides, Faculty of Agriculture, Kafr EL-Sheikh, Tanta University, Egypt
2Department of Economic Entomology, Faculty of Agriculture, Kafr EL-Sheikh, Tanta University, Egypt
Abstract
The present study was directed to evaluate the bioactivity of some pesticides (i.e. malatox and propoxur) or their alternatives (i.e. mineral oil CAPL-2), plant extracts (black cumin and wormseed) and a commercial product of the entomopathogenic fungi, Biofly (Beauveria bassiana) against Aphis gossypii (Glover), The tested alternatives were also evaluated when combined in mixtures with classical pesticides. The results achieved in this study can be summarized in the following findings: Malatox showed the highest toxicity followed by propoxur (LC5o 16.31 and 105.22 p.p.m respectively), while Black cumin had a moderate toxic effect followed by the mineral oil CAPL-2 (LCS0 140.42 and 891.30 p.p.nu respectively) and Wormseed was the least toxic convound to adults of A. gossypii (LC50 1704 p.p.m).The potentiation effect against adults of A. gossypii was obtained with the mixtures of malatox + CAPL-2, malatox + black cumin, malatox + wormseed, propoxur + CAPL-2, propoxur + black cumin and propoxur + wormseed. The microbial pesticide Biofly was highly toxic to aphid adults (LC50



 


 
 




 = 920 ; conidia/rnl). [he mixture (malatox CAPL-2), malatox, mixture (prcgo.xur + CAPL-2) and propoxut were the most effective cumbiratioms on the prolongation of nymphal stage of different instars, also reduction in the number of produced nymphs was observed and significant higher mortality than the control. The mineral oil CAPL-2 was the least effective on prolongation of nymphal stage for different instars as well as the reduction in the number of produced nymphs and nymphal moatality. Black cumin extract was the highest effective compound on a prolongation of the nymphal stage of the different instars, also reduction in the number of produced nymphs followed by extract wormseed on Aphis gossypii. The biofly had a moderate on prolongation of the nymphal stage of the different instars as well reduction in the number of produced nymphs of Aphis gossypii.
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