ISHS Acta Horticulturae 816: IV International Phylloxera Symposium
ASSESSMENT OF PHYLLOXERA LEAF GALLING INCIDENCE ON EUROPEAN GRAPEVINES IN BADACSONY HUNGARY |
| Authors: | J. Györffyné Molnár, CS. Németh, J. Májer, G. Györffyné Jahnke |
| Keywords: | grape phylloxera, leaf galls, Badacsony, Hungary |
| Abstract:
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. | |
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