Title
Reduced levels of calcium and other mineral elements in grapevine leaves affected by Bois noir (BN)
Document Type
Article
Source
Mitteilungen Klosterneuburg
ISSN
0007-5922
Volume
58
First Page
117
Last Page
122
Publication Date
2008
Department
Natural Sciences and Mathematics
Abstract
The concentrations of seven mineral elements (Ca, K, N, Mg, Mn, Fe and P) were analyzed in leaves of healthy gra- pevines and of grapevines infected with Bois noir (BN). The levels of calcium of all five varieties used in the study('Chardonnay', 'MuÈller Thurgau', 'Pinot Noir', 'Lagrein' and 'Zweigelt') were significantly lower in leaves infected with BN. The other six elements also showed a tendency towards decreased contents, but the effects were less consi-stent. A distinctive varietal influence on both visual symptoms of BN and mineral contents was observed, 'Chardon-nay' and 'Zweigelt' being the most susceptible cultivars.
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