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Eleawa, M., Waked, D., Ali, M., Elgohary, E. (2022). Efficiency of Certain Entomopathogenic Bacteria, Fungi with Pesticides for Controlling Spodoptera littoralis. Journal of Plant Protection and Pathology, 13(1), 19-22. doi: 10.21608/jppp.2022.114871.1056
M. Eleawa; Dalia A. Waked; M. A. Ali; Eman M. Elgohary. "Efficiency of Certain Entomopathogenic Bacteria, Fungi with Pesticides for Controlling Spodoptera littoralis". Journal of Plant Protection and Pathology, 13, 1, 2022, 19-22. doi: 10.21608/jppp.2022.114871.1056
Eleawa, M., Waked, D., Ali, M., Elgohary, E. (2022). 'Efficiency of Certain Entomopathogenic Bacteria, Fungi with Pesticides for Controlling Spodoptera littoralis', Journal of Plant Protection and Pathology, 13(1), pp. 19-22. doi: 10.21608/jppp.2022.114871.1056
Eleawa, M., Waked, D., Ali, M., Elgohary, E. Efficiency of Certain Entomopathogenic Bacteria, Fungi with Pesticides for Controlling Spodoptera littoralis. Journal of Plant Protection and Pathology, 2022; 13(1): 19-22. doi: 10.21608/jppp.2022.114871.1056

Efficiency of Certain Entomopathogenic Bacteria, Fungi with Pesticides for Controlling Spodoptera littoralis

Article 4, Volume 13, Issue 1, January 2022, Page 19-22  XML PDF (795.59 K)
Document Type: Original Article
DOI: 10.21608/jppp.2022.114871.1056
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Authors
M. Eleawa; Dalia A. Waked email orcid ; M. A. Ali; Eman M. Elgohary
Plant Protection Research Institute, Agricultural Research Center, Dokki, Giza, Egypt
Abstract
This study was conducted to identify the susceptible stages of the cotton leafworm, Spodoptera littoralis to the entomopathogens fungus, Metarhizum anisopliae and bacterium, Pseudomonas aeuriginosa. The mortality percentages recorded after treatment of the 2nd and 4th instar larvae of S. littoralis with concentration 1×108 spore/ml of M. anisopliae were 84.28 and 75.71% after 5 days of treatment. While, LT50 were 0.81 and 1.93 days for 2nd and 4th instar larvae of S. littoralis, respectively. P. aeruginosa concentration 2.3× 108 spore/ml caused mortality 81.42 and 60% and LT50 3.87 and 4.51 days for 2nd and 4th instar larvae of S. littoralis, respectively. Pupae of S. littoralis were susceptible for both entomopathogens agents. Moreover adults emergence percentage decreased. Combined treatment of pesticides with P. aeruginosa and M. anisopliae proved best action causing higher mortality percentages for larvae compared with using pesticides alone.
Keywords
Spodoptera littoralis; Pseudomonas aeuriginosa; Metarhizum anisopliae; Pesticides
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