Efficacy of Some Biopesticides and Their Field Persistence on Cotton Plants Against Spodoptera littoralis (Boisd.)
Dahi, H., E., G., M., E. (2016). Efficacy of Some Biopesticides and Their Field Persistence on Cotton Plants Against Spodoptera littoralis (Boisd.). EKB Journal Management System, 8(2), 73-80. doi: 10.21608/eajbsf.2016.17120
H. F. Dahi; Gamil W. E.; El-Zoghby I. R. M.. "Efficacy of Some Biopesticides and Their Field Persistence on Cotton Plants Against Spodoptera littoralis (Boisd.)". EKB Journal Management System, 8, 2, 2016, 73-80. doi: 10.21608/eajbsf.2016.17120
Dahi, H., E., G., M., E. (2016). 'Efficacy of Some Biopesticides and Their Field Persistence on Cotton Plants Against Spodoptera littoralis (Boisd.)', EKB Journal Management System, 8(2), pp. 73-80. doi: 10.21608/eajbsf.2016.17120
Dahi, H., E., G., M., E. Efficacy of Some Biopesticides and Their Field Persistence on Cotton Plants Against Spodoptera littoralis (Boisd.). EKB Journal Management System, 2016; 8(2): 73-80. doi: 10.21608/eajbsf.2016.17120

Efficacy of Some Biopesticides and Their Field Persistence on Cotton Plants Against Spodoptera littoralis (Boisd.)

Egyptian Academic Journal of Biological Sciences, F. Toxicology & Pest Control
Article 8, Volume 8, Issue 2 - Serial Number 1, December 2016, Page 73-80  XML PDF (369.51 K)
Document Type: Original Article
DOI: 10.21608/eajbsf.2016.17120
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Authors
H. F. Dahi1; Gamil W. E.1; El-Zoghby I. R. M.2
1Plant Protection Research Institute, ARC, Dokki, Giza, Egypt
2Plant Prot. Dep., Faculty of Agriculture and natural Resource, Aswan Univ
Abstract
Bioinsecticides considered a one of the safest method for pest control. A field study was conducted to compare the efficiency of the two types of bioinsecticides with two different mode of action against Egyptian cotton leaf worm Spodoptera littoralis (Boisd.). The recommended rate of these insecticides was sprayed on the foliage of cotton plants in the field and the reduction % were recorded after 2,4,6,8 days. Also, semi field studies were conducted to determine the latent effects of tested bioinsecticides on biological aspects. The results revealed that Spinetoram filed treatment recorded the highest reduction present  95.5% after 2 days and reduced gradually to 74.0% after 8 days with general mean 85.1%, while Dipel 2X, caused 24.8% reduction percent after 2 days and increased gradually up to 86.7 % after 8 days with general mean 55.9 %. Semi filed studied explained that; Spinetoram treatment was more effective on 2nd and 4th S. littoralis biological aspects than Dipel 2X treatment, specially; larval mortality, pupal mortality, adult emergence, malformed adult % fecundity and fertility. These results indicated that Spinetoram had the potentiality to be promising substitutes of conventional toxicants for S. littoralis control under field conditions.
Keywords
Spodoptera littoralis; Cotton leafworm; bioinsecticides; Field persistence; Residual activity; Latent effects; Spinetoram; Dipel 2X
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