Efficacy of some natural oils on the residual toxicity of emamectin benzoate, spinosad and spinetoram against Egyptian cotton leafworm
Abou-Taleb, H., Abdel Rahman, S., Sherby, S. (2008). Efficacy of some natural oils on the residual toxicity of emamectin benzoate, spinosad and spinetoram against Egyptian cotton leafworm. EKB Journal Management System, 16(1), 37-56. doi: 10.21608/jpces.2008.459594
Hamdy K. Abou-Taleb; S. M. Abdel Rahman; S. M. Sherby. "Efficacy of some natural oils on the residual toxicity of emamectin benzoate, spinosad and spinetoram against Egyptian cotton leafworm". EKB Journal Management System, 16, 1, 2008, 37-56. doi: 10.21608/jpces.2008.459594
Abou-Taleb, H., Abdel Rahman, S., Sherby, S. (2008). 'Efficacy of some natural oils on the residual toxicity of emamectin benzoate, spinosad and spinetoram against Egyptian cotton leafworm', EKB Journal Management System, 16(1), pp. 37-56. doi: 10.21608/jpces.2008.459594
Abou-Taleb, H., Abdel Rahman, S., Sherby, S. Efficacy of some natural oils on the residual toxicity of emamectin benzoate, spinosad and spinetoram against Egyptian cotton leafworm. EKB Journal Management System, 2008; 16(1): 37-56. doi: 10.21608/jpces.2008.459594

Efficacy of some natural oils on the residual toxicity of emamectin benzoate, spinosad and spinetoram against Egyptian cotton leafworm

Journal of Pest Control and Environmental Sciences
Volume 16, Issue 1, 2008, Pages 37-56    PDF (240.29 K)
Document Type: Original Article
DOI: 10.21608/jpces.2008.459594
Authors
Hamdy K. Abou-Taleb* 1; S. M. Abdel Rahman2; S. M. Sherby3
1Plant Protection Research Institute, ARC, Bacous, Sabahia, Alexandria Egypt
2Central Pesticides Laboratory, Sabahia Station
3Dep. Pesticide Chem., Faculty of Agric. El-Shatby, Univ. Alexandria, Egypt
Abstract
During the 2006 and 2007 growing seasons, two semi-field trials were carried out to determine the efficacy of two plant oils (neem and jojoba) and two light mineral oils (Star and Kemesol) on the persistence and residual toxicity of emamectin benzoate, spinosad and spinetoram as determined by cotton leafworm, Spodoptera littoralis, 2nd instar larvae bioassay. The aim of this study was to extend the residual life (increasing persistence) and to increase the residual toxicity of these insecticides. The tested insecticides were applied at the recommended rates, while oil concentrations were selected for field testing based on their performance in a laboratory study. Results showed that, jojoba oil (at 200 ppm) increased the residual toxicity of spinosad, spinetoram and emamectin benzoate against the 2nd instar larvae of S. littoralis during the two seasons. Also, neem oil (at 200 ppm) extended the residual toxicity of spinosad, spinetoram and emamectin benzoate, but to a lesser extent than jojoba oil. Although, Kemesol and Star mineral oils (at 1500 ppm) increased the toxicity of spinosad, spinetoram and emamectin benzoate in the laboratory, these oils had no effects on the residual toxicity of the tested insecticides in the field.
Keywords
Cotton leafworm; spinosad; spinetoram; emamectin benzoate; plant oils; mineral oils
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