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Title:   Author  item
                                            GUBLER, W.D. - UC DAVIS PLANT PATHitem
                                            Baumgartner, Kendraitem
                                            Browne, Gregitem
                                            ESKALEN, A. - UC DAVIS, PLANT PATHitem
                                            LATHAM, S. ROONEY - UC DAVIS, PLANT PATHitem
                                            PETIT, E. - UC DAVIS, PLANT PATHitem
                                            BAYRAMIAN, L. - UC DAVIS, PLANT PATH
  Submitted to: Proceedings of the Australian Society of Soil Science Conference
                                    Publication Type: Proceedings
                                    Publication Acceptance Date: 2/28/2004
                                    Publication  Date: 7/30/2004
                                    Citation: Gubler, W., Baumgartner, K., Browne, G.T., Eskalen, A., Latham, S., Petit, E., Bayramian, L. 2004. Root disease of grapevines in california and their control. Proceedings of the Australian Society of Soil Science Conference.Interpretive Summary: Root rots of grapevine in California are caused by several soilborne pathogens, such as Phytophthora spp., Armillaria mellea, and Cylindrocarpon destructans.  While Phytophthora spp. and A. mellea have been known to occur for many years, some root pathogens, namely Phaeomoniella chlamydospora, have increased in incidence and severity since the introduction of rootstocks resistant to Phylloxera.  New diseases such as Petri disease caused by Phaeomoniella chlamydospora, vine decline caused by Phaeoacremonium spp, and Black foot caused by Cylindrocarpon destructans have only recently been shown to occur in California.  Wilt caused by Verticillium dahliae has become more prevalent in nearly all grape growing regions in California. Though losses due to actual root disease have been minor over the past 10 years, they are becoming more common in replanted vineyards.
                                Technical Abstract: Root rots of grapevine in California are caused by several soilborne pathogens.  While root rot in vineyards in general has been considered to be a relative minor problem, nearly all root diseases have increased in incidence and severity since the introduction of rootstocks resistant to Phylloxera.  Pathogens such as Phytophthora spp. and Armellaria mellea have been known to occur for many years.  However, seldom did a root rot become a serious problem in vineyards.  New diseases such as Petri disease caused by Phaeomoniella chlamydospora, vine decline caused by Phaeoacremonium spp, and Black foot caused by Cylindrocarpon destructans have only recently been shown to occur in California.  Wilt caused by Verticillium dahliae has become more prevalent in nearly all grape growing regions in California. Though losses due to actual root disease have been minor over the past 10 years, losses due to vineyard reestablishment have been large.


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