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El-Nagar,, M., Ahmed, H., Salem, H., El-Sayed, H. (2007). TWO Beauveria spp. AS PROMISSING BIOLOGICAL CONTROL CANDIDATES FOR CONTROLLING COTTON APHIDS (Aphis gossypii) GLOVER.. Journal of Plant Protection and Pathology, 32(6), 4841-4847. doi: 10.21608/jppp.2007.219640
M. E. El-Nagar,; Hoda A. Ahmed; Hoda A. Salem; Heba Y. El-Sayed. "TWO Beauveria spp. AS PROMISSING BIOLOGICAL CONTROL CANDIDATES FOR CONTROLLING COTTON APHIDS (Aphis gossypii) GLOVER.". Journal of Plant Protection and Pathology, 32, 6, 2007, 4841-4847. doi: 10.21608/jppp.2007.219640
El-Nagar,, M., Ahmed, H., Salem, H., El-Sayed, H. (2007). 'TWO Beauveria spp. AS PROMISSING BIOLOGICAL CONTROL CANDIDATES FOR CONTROLLING COTTON APHIDS (Aphis gossypii) GLOVER.', Journal of Plant Protection and Pathology, 32(6), pp. 4841-4847. doi: 10.21608/jppp.2007.219640
El-Nagar,, M., Ahmed, H., Salem, H., El-Sayed, H. TWO Beauveria spp. AS PROMISSING BIOLOGICAL CONTROL CANDIDATES FOR CONTROLLING COTTON APHIDS (Aphis gossypii) GLOVER.. Journal of Plant Protection and Pathology, 2007; 32(6): 4841-4847. doi: 10.21608/jppp.2007.219640

TWO Beauveria spp. AS PROMISSING BIOLOGICAL CONTROL CANDIDATES FOR CONTROLLING COTTON APHIDS (Aphis gossypii) GLOVER.

Article 9, Volume 32, Issue 6, June 2007, Page 4841-4847  XML PDF (367.58 K)
Document Type: Original Article
DOI: 10.21608/jppp.2007.219640
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Authors
M. E. El-Nagar,1; Hoda A. Ahmed2; Hoda A. Salem2; Heba Y. El-Sayed1
1Plant Protection Research Institute, ARC, Dokki, Giza, Cairo.
2Zoology Department , Faculty of Science, Mansoura University.
Abstract
The pathogenicity of two species of entomopathogenic fungi ,Beauveria bassiana and B.brongniaretii against Aphis gossypii was examined under laboratory conditions. Data revealed that pathogenicity effect on nymphs and adults were very high and varied according to the conidia concentrations and periods after infection . The LC50 values of B.bassiana and B.brongniartii against adults were 2.443x103 conidia /ml and 3.118x103 conidia/ml respectively. Also, the LC50 values of the tested entomopathogenic fungi against nymphs were 2.279x103 conidia/ml and 1.955x103 conidia/ml, respectively.The accumulative mortality percentages of A.gossypii after treatment with different concentrations of each pathogen at different time intervals were conducted.
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