ASSESSMENT OF PHYLLOXERA LEAF GALLING INCIDENCE ON EUROPEAN GRAPEVINES IN BADACSONY HUNGARY
In 1997, in one-year old plantations at the FVM Research Institute for Viticulture and Enology, Badacsony, a serious increase in phylloxera leaf-galling was observed. In 2001, leaf-galling was estimated in one- and two-year old plantations of Vitis vinifera L. Kéknyelű, Budai and Badacsony 36 and Rózsakő. In the fall of 2006 leaf-galling was examined on V. vinifera Sauvignon Blanc. From the European varieties, the leaf galls were more frequently observed on the Muscat-like varieties, the most sensitive being Cserszegi Fűszeres. On V. vinifera Sauvignon Blanc leaf galling was observed on 96% of the foliage. On the upper leaves of randomly selected shoots 73% were infected. Our observations, results and experiences confirm the necessity for an in-depth investigation of leaf galling phylloxera, in preparedness for new infestations on European varieties.
Györffyné Molnár, J., Németh, CS., Májer, J. and Györffyné Jahnke, G. (2009). ASSESSMENT OF PHYLLOXERA LEAF GALLING INCIDENCE ON EUROPEAN GRAPEVINES IN BADACSONY HUNGARY. Acta Hortic. 816, 97-104
grape phylloxera, leaf galls, Badacsony, Hungary