ISHS Acta Horticulturae 274: International Symposium on Diagnosis of Nutritional Status of Deciduous Fruit Orchards
EFFECT OF 65-YEAR STATIC SOIL FERTILIZATION ON THE GROWTH, FRUITING AND LEAF NUTRIENT STATUS OF A TART CHERRY TREES |
| Authors: | S. Mercik, K. Slowik, T. Wasowski |
| Abstract:
Results of field experiments with tart cherry trees cv. Schattenmorelle, budded on Prunus mahaleb, kept in overal herbicide on 2 fields, with very different content of nutrients in soil, allow to make the following generalizations: Among the nutrient elements investigated (N,P,K,Ca) it was potassium, which restricted most strongly the growth and yield of tart cherry trees. The response to potassium was diminished when the exchangeable potassium content in soil exceeded 8 mg/K/100 g and its content in leaves exceeded 1% K in d.m. Also considerable drop of yields due to an insufficient supply of soil with nitrogen took place, although the boundary values of this element in soil and leaves were hardly determinable. Acidification of soil led to a decrease of yield only when pHKC1 of soil did not exceed 4. In spite of a very heavy exhausting of soils of available phosphorus forms (2 mgP/100 g of soil), the yield of tart cherry trees was not worse nor they contained less phosphorus in leaves. | |
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