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HASSANEIN, A., EL-BAROUGY, E., ELGARHY, A., PARIKKA, P., EL-SHARKAWY, T. (2000). BIOLOGICAL CONTROL OF DAMPING-OFF, ROOT- ROT / WILT DISEASES OF ALFALFA IN EGYPT. Egyptian Journal of Agricultural Research, 78(1), 63-71. doi: 10.21608/ejar.2000.321463
AHMED M. HASSANEIN; EBTEHAG EL-BAROUGY; ABDA-ALLAA M. ELGARHY; PAIVI PARIKKA; TAHA A. EL-SHARKAWY. "BIOLOGICAL CONTROL OF DAMPING-OFF, ROOT- ROT / WILT DISEASES OF ALFALFA IN EGYPT". Egyptian Journal of Agricultural Research, 78, 1, 2000, 63-71. doi: 10.21608/ejar.2000.321463
HASSANEIN, A., EL-BAROUGY, E., ELGARHY, A., PARIKKA, P., EL-SHARKAWY, T. (2000). 'BIOLOGICAL CONTROL OF DAMPING-OFF, ROOT- ROT / WILT DISEASES OF ALFALFA IN EGYPT', Egyptian Journal of Agricultural Research, 78(1), pp. 63-71. doi: 10.21608/ejar.2000.321463
HASSANEIN, A., EL-BAROUGY, E., ELGARHY, A., PARIKKA, P., EL-SHARKAWY, T. BIOLOGICAL CONTROL OF DAMPING-OFF, ROOT- ROT / WILT DISEASES OF ALFALFA IN EGYPT. Egyptian Journal of Agricultural Research, 2000; 78(1): 63-71. doi: 10.21608/ejar.2000.321463

BIOLOGICAL CONTROL OF DAMPING-OFF, ROOT- ROT / WILT DISEASES OF ALFALFA IN EGYPT

Article 4, Volume 78, Issue 1, March 2000, Page 63-71  XML PDF (2.32 MB)
Document Type: Original Article
DOI: 10.21608/ejar.2000.321463
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Authors
AHMED M. HASSANEIN1; EBTEHAG EL-BAROUGY1; ABDA-ALLAA M. ELGARHY1; PAIVI PARIKKA2; TAHA A. EL-SHARKAWY1
1Plant Pathology Research Institute, Agricultural Research Center, Cairo, Egypt
2Plant Protection Research Institute, Agricultural Research Center, Jokioinen, Finland
Abstract
Alfalfa (Medicago sativa L.) is subject to stand injury and yield loss from several diseaes, such as damping-off, wilt and root-rot. Rhi­zoctonia solani and Fusarium oxysporum are the main pathogens of these diseases. There are great efforts to reduce environmental pollu­tion by reducing the usage of agrochemicals to control pests. Biological control of many diseases is used as a mean to increase forage produc­tion. Some bioagents [Trichodermaharzianum, T.viride, Bacillus subtilis and Mycostop (Streptomyces grisioviridis)] significantly inhibited my­celial growth of Rhizoctonia solani)) and Fusarium oxysporum in vitro . Trichoderma harzianum and T.viride overlapped with the pathogens and suppressed the growth by 53 and 48% for R.solani, and 66 and 60.6 for F.oxysporum. Also, 8.subitilis and Mycostop expressed inhibitory zone, and inhibited pothogen's by 36.1 and 59.4% for R.solani and 46.3 and 72.8% for F.oxysporum. Under greenhouse conditions, all tested biocon­trol agents significantly decreased damping-off and root-rot/wdt diseas­es in alfalfa. T.harzianum, Gliocladium virens and Mycostop were more ef­fective in controlling camping-off and root-rot/wilt diseases caused by R.solani and F.oxysporum in alfalfa.
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