The effect of arbuscular mycorrhizal fungi on the content of macro and micro elements in grapevine (Vitis vinifera, L.) leaves
Martin Sedláček | Pavel Pavloušek | Tomáš Lošák | Andrea Zatloukalová | Radek Filipčík | Jaroslav Hlušek | Monika Vítězová
In a two-year field experiment we used leaf analysis to evaluate the effect of arbuscular mycorrhizal (AM) fungi on the content of some macro elements (N, P, K, Ca, Mg) and micro elements (Zn, Mn, Fe) in grapevine leaves at the beginning of softening/veraison of grape berries. The contents of the individual elements differed which was caused both by the different varieties of Rulandské modré (Pinot Noir) and Frankovka (Blaufränkisch), and by the effect of the conditions of the year (2010, 2011), and by the actual treatment of the experiment (untreated control, mycorrhizal /AM/ plants). In 2010 the contents of all the nutrients in leaves of the variety Rulandské modré (Pinot Noir) were optimal with the exception of the contents of Ca and Mg in 2011 and content of K in 2010. In the mycorrhizal plants in both years only calcium increased significantly (3.50 % as against 3.29 % and 1.54 % as against 1.31 %, respectively). The contents of micro elements in the variety Rulandské modré (Pinot Noir) fluctuated irregularly; only the content of Mn was higher in the control treatment in both years. The variety Frankovka (Blaufränkisch) showed a small to great Ca deficit in the leaves in both years; in 2010 also a K deficit and in 2011 a deficit in Mg. The contents of N, K and Mn increased significantly in the mycorrhizal treated plants both in 2010 and in 2011.
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