الفهرس 
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Abstract
Peanut plants showing different basal stem and root rot symptoms
twere collected from different localities i.e., Ismailia, Sharkia and Behera
Governorates during 1994 to 1997 growing seasons, The obtained
[results can be summerized as follows :
fl-Isolation from peanut root-rotted plants yielded . A. alternata, A. humicola, A. Jlavus, A. nidulans, A. niger, A. terreus, Botrydiplodia sp., Chaetomium globosum, Cladosporium oxysporum, Diplodia natalesis, Fusarium moliniform, F. oxysporum, F roseum, F. semitectum, F. solani, F. vasinfectum, Helminthosponum sativum, M. phaseolina, Myrothecium verrucarua, Nigrospora state of khuskia oryzae, N. sphaerica, Pythium debaryanum, V. ultimum, Verticillium alho-atrum, R. solani Sclerotium rolfsii. i nchodermum herizianum, T. viride, Penicillium digitatum, P. italicum, Mucor sp. and Rhizopus stolonifer.
2- Pathogenicity tests on cultivars Giza 5, Giza4, Local 383 and NC7 peanut indicated that Aspergillus niger and Rhizoctonia solani were the most pathogenic on Giza 5 and Giza 4 causing seed decay and seedling pre-and post-emergence damping . Soil infestation of Giza 5, peanut cultuvar proved that, R. solani was more virulent followed by Sclerotium rolfsii, and Aspergillus jlavus, while Fusarium oxysporum and Macrophomina phaseolina were the least in this respect.