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Khalil,, F., Saber, M., El-Assuty, E., Yassin, M. (2007). DISTRIBUTION AND EPIDEMIC PATTERN OF CERCOSPORA LEAF SPOT DISEASE OF SUGAR BEET IN EGYPT.. Journal of Plant Protection and Pathology, 32(5), 3745-3758. doi: 10.21608/jppp.2007.219526
F. A. Khalil,; M. M.M. Saber; E. M.M. El-Assuty; M. A. Yassin. "DISTRIBUTION AND EPIDEMIC PATTERN OF CERCOSPORA LEAF SPOT DISEASE OF SUGAR BEET IN EGYPT.". Journal of Plant Protection and Pathology, 32, 5, 2007, 3745-3758. doi: 10.21608/jppp.2007.219526
Khalil,, F., Saber, M., El-Assuty, E., Yassin, M. (2007). 'DISTRIBUTION AND EPIDEMIC PATTERN OF CERCOSPORA LEAF SPOT DISEASE OF SUGAR BEET IN EGYPT.', Journal of Plant Protection and Pathology, 32(5), pp. 3745-3758. doi: 10.21608/jppp.2007.219526
Khalil,, F., Saber, M., El-Assuty, E., Yassin, M. DISTRIBUTION AND EPIDEMIC PATTERN OF CERCOSPORA LEAF SPOT DISEASE OF SUGAR BEET IN EGYPT.. Journal of Plant Protection and Pathology, 2007; 32(5): 3745-3758. doi: 10.21608/jppp.2007.219526

DISTRIBUTION AND EPIDEMIC PATTERN OF CERCOSPORA LEAF SPOT DISEASE OF SUGAR BEET IN EGYPT.

Article 4, Volume 32, Issue 5, May 2007, Page 3745-3758  XML PDF (802.12 K)
Document Type: Original Article
DOI: 10.21608/jppp.2007.219526
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Authors
F. A. Khalil,1; M. M.M. Saber1; E. M.M. El-Assuty2; M. A. Yassin2
1Plant Pathology Dept., Agriculture College, Cairo Univ.
2Plant Pathology Research Institute, ARC
Abstract
Cercospora leaf spot disease "CLS" was detected in the most of beet growing areas in Egypt with percentage of disease severity ranged from 5-75%. No symptoms were observed in Minya, Bani-Suef or fayoum governorates.  Epidemiological analysis of CLS during the period 2002-2005, revealed that disease progress rate "DPR" and area under disease progress curve "AUDPC" values were ranged from (0.08 - 0.58; 0.10-0.54 and 0.09-0.50) and (3.2-24.4%; 3.2-23.2% and 3.0-19.6%) for the first, second and third years respectively. In respect of sowing dates results showed that DPR and AUDPC values were ranged from 0.45-0.58; 0.04-0.13 & 0.09-0.17 and 14.9-24.4%; 2.1-4.5% & 3.2-5.6% for the first (August), second (September) and third (October) sowing dates respectively. It was proved that the greatest effect of Cercospora leaf spot disease "CLS" on sugar beet in Egypt was in the 1st sowing date. Increase of disease rates and effects in the 1st sowing date may due to presence of favorable environmental conditions.
Keywords
Cercospora leaf spot; Distribution; Epidemic pattern
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