ROLE OF VESICULAR-ARBUSCULAR MYCORRHIZA FUNGI AND PHOSPHORUS IN THE CONTROL OF ALFALFA DAMPING-OFF PATHOGENS | ||||
Egyptian Journal of Agricultural Research | ||||
Article 3, Volume 80, Issue 3, September 2002, Page 1001-1016 PDF (4.48 MB) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/ejar.2002.311885 | ||||
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Authors | ||||
MOHAMED A. ABDEL-SATTAR1; SALAH A. NASSR1; IBRAHIM N. ALI1; EBTEHAG, S. H. EL-BAROUGY2; TAHA A. EL-SHARKAWY2 | ||||
1Plant Pathology Department, Faculty of Agriculture, Suez Canal University, Ismailia, Egypt | ||||
2Plant Pathology Research Institute, Agricultural Research Center, Giza, Egypt | ||||
Abstract | ||||
The effects of vesicular arbscular Mycorrhiza fungi (Glomus sp, Gigaspora sp Acalospora sp) and different sources and levels of phosphorus on damping off caused by Fusarium oxysporum, Verticiffium alboatrum and Colletotrichum adorn in alfalfa plants were investigated in pot experiments. VAMF decreased damping off in plants grown in soil amended with superphosphate or rock phosphate, whereas damping-off increased in soil unamended with phosphorus source. The extent of mycorrhizal colonization increased by the addition of superphosphate to the soil in comparison with rock phosphate or without phosphate. Dry weight of shoots was affected by using VA mycorrhiza and phosphatic fertilization, where it was increased in the presence of mycorrhiza and superphosphate or rock- phosphate, contrary to plants grown in soil unamended with phosphatic fertilizer.VAMF can be considered one tactic to be included in an IPM program provided enough phosphatic sources are available. | ||||
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