TY - SER AU - EI-Morsi,M.E.A. AU - Hassan,M.A.E. AU - Abo Rehab,M.E.A. TI - Incidence of root-rot and wilt disease complex of olive trees in New Valley Governorate in Egypt and its control) KW - Olive KW - Diseases and pests KW - Control KW - Transplanting (Plant culture) KW - Root rots KW - Bacterial wilt diseases KW - Fungicides KW - Humic acid N1 - Includes reference N2 - Root rot and wilt disease complex was detected in different olive tree orchards at El-Kharga, Paris, Eldakhla and EI-Faraftah oases of the New Valley Governorate. Percentage of disease incidence and severity on olive trees in surveyed districts were differed. The average percentage of disease incidence and severity of root rots and wilt disease in surveyed districts were 27.7-54.1% and 35.460.3%, respectively. The most frequent isolated fungi from rotted roots of olive trees were Fusarium oxysporum, F. solani, F. moniliforme, F. equiseti and Rhizoctonia solani, while Macrophomina phaseolina, Cylindrocarpon sp., Acremonium egyptina, Chaetomium olivaceum and Nigrospora oryzae were isolated in less frequency. Frequency of the isolated fungi varied between locations. Fusarium oxysporum was most frequent at all locations, followed by F. solani and R solani. All the tested fungi were pathogenic to olive transplants, Fusarium oxysporum, F. solani and Rhizoctonia. solani caused the highest root rots incidence and severity UR - http://nile.enal.sci.eg/EALE/2009/AJAS/4009/1/105.pdf ER -