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EL-DEFRAWI, G., EMAM, A., MARZOUK, I., RIZKALLA, L. (2000). POPULATION DYNAMICS AND SEASONAL DISTRIBUTION OF APHIS CRACCIVORA KOCH AND ASSOCIATED NATURAL ENEMIES IN RELATION TO VIRUS DISEASE INCIDENCE IN FABA BEAN FIELDS. Egyptian Journal of Agricultural Research, 78(2), 627-641. doi: 10.21608/ejar.2000.321976
GODA M. EL-DEFRAWI; AZZA K. EMAM; IBRAHIM A. MARZOUK; LATEF RIZKALLA. "POPULATION DYNAMICS AND SEASONAL DISTRIBUTION OF APHIS CRACCIVORA KOCH AND ASSOCIATED NATURAL ENEMIES IN RELATION TO VIRUS DISEASE INCIDENCE IN FABA BEAN FIELDS". Egyptian Journal of Agricultural Research, 78, 2, 2000, 627-641. doi: 10.21608/ejar.2000.321976
EL-DEFRAWI, G., EMAM, A., MARZOUK, I., RIZKALLA, L. (2000). 'POPULATION DYNAMICS AND SEASONAL DISTRIBUTION OF APHIS CRACCIVORA KOCH AND ASSOCIATED NATURAL ENEMIES IN RELATION TO VIRUS DISEASE INCIDENCE IN FABA BEAN FIELDS', Egyptian Journal of Agricultural Research, 78(2), pp. 627-641. doi: 10.21608/ejar.2000.321976
EL-DEFRAWI, G., EMAM, A., MARZOUK, I., RIZKALLA, L. POPULATION DYNAMICS AND SEASONAL DISTRIBUTION OF APHIS CRACCIVORA KOCH AND ASSOCIATED NATURAL ENEMIES IN RELATION TO VIRUS DISEASE INCIDENCE IN FABA BEAN FIELDS. Egyptian Journal of Agricultural Research, 2000; 78(2): 627-641. doi: 10.21608/ejar.2000.321976

POPULATION DYNAMICS AND SEASONAL DISTRIBUTION OF APHIS CRACCIVORA KOCH AND ASSOCIATED NATURAL ENEMIES IN RELATION TO VIRUS DISEASE INCIDENCE IN FABA BEAN FIELDS

Article 11, Volume 78, Issue 2, June 2000, Page 627-641  XML PDF (4.1 MB)
Document Type: Original Article
DOI: 10.21608/ejar.2000.321976
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Authors
GODA M. EL-DEFRAWI1; AZZA K. EMAM2; IBRAHIM A. MARZOUK1; LATEF RIZKALLA3
1Plant Protection Research Institute, Agricultural Research Centre, Dokki, Giza, Egypt
2Plant Protection Department, Faculty of Agricultural, AM Shams University, Cairo, Egypt
3Plant Pathology Research Institute, Agricultural Research Centre, Giza, Egypt
Abstract
The population density of the cowpea aphid, Aphis craccivora and its associated natural enemies in faba bean fields were studied at Sids Agric. Exp. Stat., ARC, Beni Suef Governorate, Middle Egypt in 1995/96 and 1996/97 seasons. The occurrece and status of aphid in relation to virus disease incidence on faba bean plants was also investi‌gated. A.craccivora had two main periods of activity with maximum counts during the 3rd week of December and in February in 1995/96 season and the dth. week of December and the 3rd week of March in 1996/97. The common predators observed in faba bean fields were : C.undecimpunctata L.: Ccarnea Steph.; S.corollae F.. Ph.aphidivora Rubs.. S.interruptus Goeze. The minor predators were C.septempunctala L.riparia Pall., P.allierii Kock. Orius spp., and certain true spiders. Three endoparasites namely Aphidius matricariae, Lysiphlebus sp. and Trioxys angelicae were also observed. The population of alate forms of Acraccivora was significantly and positively correlated with virus disease incidence within faba bean plants. Viruliferous aphid attack to faba bean 
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