ISHS Acta Horticulturae 448: III International Symposium on Mineral Nutrition of Deciduous Fruit Trees
NUTRITIONAL STATUS OF ‘SCHATTENMORELLE’ CHERRY TREES IN RELATION TO THE TYPE OF ROOT SYSTEM AND TREE AGE |
| Authors: | E. Jadczuk, A. Sadowski |
| Keywords: | sour cherry, Prunus cerasus, Prunus avium, self-rooted trees, leaf nutrient content, mazzard stock |
| Abstract:
Effect of root type, ‘Schattenmorelle’ clone and tree age upon leaf mineral composition was studied in the years 1989–1995. Leaf mineral element content did not depend either on selection of mazzard stock or on clone of the cultivar. However, it differed markedly between self-rooted trees and those on mazzard stock. In all years of study (1989–1995) leaf Mg content was always lower in self-rooted trees than on mazzard. For Ca the same was true in the first three years (till 1991) and in 1995 it was reverse; leaf Ca concentration was somewhat higher in self-rooted trees. Leaf K content in self-rooted trees was higher in 1989–1990, equal to that on mazzard in 1991 and lower since 1992. Leaf N content of self-rooted trees was higher in the first two years too. In other years no significant differences were recorded, except for 1993 when it was lower in self-rooted trees compared to that of trees on mazzard. In general, leaf N and K content decreased while Mg and Ca increased with age. The reason for that phenomenon is probably a successive deepening of root system. Deeper roots may absorb more nutrients from deep soil layers, containing more Ca and Mg and less K than surface layers. The results obtained indicate that genetic characteristics and form of root system are essential factors in tree nutrition. | |
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