ASSESSMENT OF PHYLLOXERA LEAF GALLING INCIDENCE ON EUROPEAN GRAPEVINES IN BADACSONY HUNGARY

J. Györffyné Molnár, CS. Németh, J. Májer, G. Györffyné Jahnke
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 Hort. (ISHS) 816:97-104
http://www.actahort.org/books/816/816_14.htm
grape phylloxera, leaf galls, Badacsony, Hungary
English