ISHS Acta Horticulturae 594: International Symposium on Foliar Nutrition of Perennial Fruit Plants
SEASONAL PATTERN AND INTERPRETATION OF MINERAL NUTRIENT CONCENTRATIONS IN APPLE LEAVES |
| Authors: | M. Aichner, E. Stimpfl |
| Keywords: | leaf analysis, reference curves, mineral nutrition, apple trees |
| Abstract:
In the period 1995 - 1999 sampling of apple leaves was performed in order to identify reference curves for a number of plant nutrients for the whole vegetative period, from bloom until after harvest. Approximately 2500 samples of apple leaves were analysed for N, P, K, Ca, Mg, B, Mn, Cu and Zn. The reference curves were derived for each element by adjusting the obtained curves to known reference values for the period of July and August. This system of leaf analysis has been found useful by growers in South Tyrol. | |
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