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Ragab, M., Elnaggar, M., Elmesawy, M. (2012). EVALUATION OF MICROBIAL CONTROL OF THE COTTON LEAFWORM, Spodoptera littoralis (BOISD.) ON TOMATO PLANTS UNDER LABORATORY CONDITIONS. Journal of Plant Protection and Pathology, 3(2), 91-99. doi: 10.21608/jppp.2012.83722
M. E. Ragab; M- E- Elnaggar; Marwa G. Elmesawy. "EVALUATION OF MICROBIAL CONTROL OF THE COTTON LEAFWORM, Spodoptera littoralis (BOISD.) ON TOMATO PLANTS UNDER LABORATORY CONDITIONS". Journal of Plant Protection and Pathology, 3, 2, 2012, 91-99. doi: 10.21608/jppp.2012.83722
Ragab, M., Elnaggar, M., Elmesawy, M. (2012). 'EVALUATION OF MICROBIAL CONTROL OF THE COTTON LEAFWORM, Spodoptera littoralis (BOISD.) ON TOMATO PLANTS UNDER LABORATORY CONDITIONS', Journal of Plant Protection and Pathology, 3(2), pp. 91-99. doi: 10.21608/jppp.2012.83722
Ragab, M., Elnaggar, M., Elmesawy, M. EVALUATION OF MICROBIAL CONTROL OF THE COTTON LEAFWORM, Spodoptera littoralis (BOISD.) ON TOMATO PLANTS UNDER LABORATORY CONDITIONS. Journal of Plant Protection and Pathology, 2012; 3(2): 91-99. doi: 10.21608/jppp.2012.83722

EVALUATION OF MICROBIAL CONTROL OF THE COTTON LEAFWORM, Spodoptera littoralis (BOISD.) ON TOMATO PLANTS UNDER LABORATORY CONDITIONS

Article 2, Volume 3, Issue 2, February 2012, Page 91-99  XML PDF (356.24 K)
Document Type: Original Article
DOI: 10.21608/jppp.2012.83722
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Authors
M. E. Ragab1; M- E- Elnaggar2; Marwa G. Elmesawy2
1Economic Entomology Dept., Faculty of Agric., Mansoura University
2Plant Protection Research Inst., Agric. Research Center, Dokki, Giza
Abstract
Laboratory experiments were carried out to evaluate the effect of some microbial agents against the 2nd and 4th instar larvae of the cotton leafworm, Spodoptera littoralis (Boisd.)on tomato plants. Mortality percent of the 2nd and 4th instar larvae of S. littoralis increased with increasing duration after treatment with Bacillus thuringiensis kurstaki, S. littoralis NPV and Beauveria bassiana, as well as, increasing the concentration used. Positive correlation in mortality percentage of S. littoralis 2nd and 4th instar larvae with tested concentrations of B. thuringiensis kurstaki, whereas the higher concentration revealed higher mortality. Also, data indicated that the 2nd instar larvae of S. littoralis was more susceptible to B. thuringiensis kurstaki, S. littoralis NPV and B. bassiana than the 4th instar larvae
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