Studies on vine leaf nutrient status in various graft combination
1995
Kocsis, L. | Lehoczky, E. | Bakonyi, L. (Pannon Agr. Egyetem, Keszthely (Hungary))
The slightest difference was found in the N content of leaves from the grafts. The P content is lower than the optimum. The potassium content of leaves indicates adequate supply and considerable, 30 difference was detested according to rootstock varieties. Leaf Ca and Mg content was satisfactory. As for Mg content, depending on rootstock variety 1,5 times differences were found. The leaf iron content was quite considerable and it differed on a wide range, always exceeding the optimum value. On fruiting varieties, contrary to elements having been studied before, Mg content showed much greater differences than according to rootstock varieties. Leaf Zn content was high. As regards B content, there were threefold differences with rootstock varieties, but deviations according to fruiting varieties were also considerable. K and Mg ration was favourable in two cases, while it was lower than optimum in the res. Zn:Fe ratio was found adequate with most of the grafts
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