Efficiency of Certain Entomopathogenic Bacteria, Fungi with Pesticides for Controlling Spodoptera littoralis | ||
| Journal of Plant Protection and Pathology | ||
| Article 4, Volume 13, Issue 1, January 2022, Pages 19-22 PDF (795.59 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jppp.2022.114871.1056 | ||
| Authors | ||
| M. Eleawa; Dalia A. Waked* ; 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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