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S u m m a r y : Wounds caused by feeding of grape phylloxera on grape roots can become infected with a variety offungi. Fusarium roseum, F. oxysporum and Pythium ultimum are important in Vitis vinifora Chardonnay wounds whereas F oxysporum and Cephalosporium sp. are important for the moderately tolerant rootstock AXR#l. Proportion of root lengths infected in the phloem parenchyma were measured in two vineyards through the 1996 growing season and into the winter. lnfection rates werefatcat:2ldkjn4w7vgclb7hdjihdowkaa