ISHS Acta Horticulturae 383: Mineral Nutrition of Deciduous Fruit Plants
NUTRITIONAL STATUS OF GRAPEVINES AND ELECTRO-ULTRAFILTRATION: FINDINGS OF FIELD EXPERIMENTS IN THE CONDITIONS OF BADENWÜRTTEMBERG, GERMANY |
| Author: | D. Rupp |
| Keywords: | grapevine, soil and leaf analysis, nutrient status |
| Abstract:
In 1990 and 1991 in a wide spread field experiment electro-ultra-filtration (EUF) and soil extractions with Calcium-oxalate + Calcium-acetate (CAL) respectively of Calcium-chloride (CaCl2) were compared with leaf analysis. Statistical analysis (multiple regression) showed, that in general correlations are low between nutrient supply in soil and leaf nutrition status. The 1990 data brought good results for the EUF-system, especially for nitrogen-, phosphorus- and potassium requirements. The data suggest, that vineyards with optimal nutritional status there is no relationship between leaf nutrient content and soil nutrient supply. | |
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