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Assessment of nutrient status of grapevines by leaf analysis in four P-fertilization studies with special regard to the DRIS system

Assessment of nutrient status of grapevines by leaf analysis in four P-fertilization studies with special regard to the DRIS system

Mitteilungen Klosterneuburg Rebe und Wein, Obstbau und Fruchteverwertung 38(4): 151-163

In a long-term experiment carried out at 4 locations it was shown that P2O5 fertilization up to 120 kg/ha increased yields by 0.2-1.7% and quality ( degrees Oe) by 1.2-3.2%, on average, depending on locality. However, the effects of fertilization were not always positive; in some years the control plots yielded more than the fertilized plots. Leaf analyses showed that fertilization did not necessarily increase nutrient contents in the leaves.

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Accession: 001533114

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