Influence of Foliar Fertilization with P and K on Chemical Constituents of Grape cv. ‘Cardinal’

The foliar fertilization has been used as an important agrotechnical measure to avoid deficiencies and to improve quality. During the two consecutive years, a study has been performed on Vitis vinifera L. (cv. ‘Cardinal’) to examine whether a grape berry quality has been affected by the foliar appli...

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Bibliographic Details
Published in:Journal of agricultural and food chemistry 2011-09, Vol.59 (18), p.10303-10310
Main Authors: Topalović, Ana, Slatnar, Ana, Štampar, Franci, Knežević, Mirko, Veberič, Robert
Format: Article
Language:English
Subjects:
anthocyanins
Biological and medical sciences
Carbohydrates - analysis
Carboxylic Acids - analysis
chemical composition
climatic factors
Fertilizers
flavanols
Flavonoids - analysis
foliar application
Food Chemistry/Biochemistry
Food industries
Fruit - chemistry
Fruit - growth & development
Fruit and vegetable industries
Fundamental and applied biological sciences. Psychology
grapes
high performance liquid chromatography
manganese
mineral fertilizers
organic acids and salts
phenolic compounds
Phosphorus - administration & dosage
Plant Components, Aerial - drug effects
Potassium - administration & dosage
spraying
sugars
Vitis - growth & development
Vitis vinifera
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Summary:The foliar fertilization has been used as an important agrotechnical measure to avoid deficiencies and to improve quality. During the two consecutive years, a study has been performed on Vitis vinifera L. (cv. ‘Cardinal’) to examine whether a grape berry quality has been affected by the foliar application of PK fertilizer. A liquid mineral fertilizer containing 15% P2O5, 20% K2O with 0.1% B, 0.1% Mn and 0.01% Mo (% w/w) has been sprayed three times at rate of 8 L ha–1 every 14–15 days starting at about 15 days before veraison. The sugars, organic acids and flavonoids (anthocyanins, flavonols and flavan-3-ols) have been analyzed by the high performance liquid chromatography in the grape berries. The foliar fertilization of grapevine can accelerate the accumulation of sugars and anthocyanins, whereas climatic factors and yearly fluctuations influence the content of sugars, organic acids, and phenolic compounds in general. The effect of fertilizer spraying on flavonols and flavan-3-ols has not been found.
ISSN:0021-8561
1520-5118
DOI:10.1021/jf2021896