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- Title
CLIMATE VARIABILITY AND MAIN NUTRIENTS IN LEAF BLADE AND PETIOLE FOR DIAGNOSE THE GRAPEVINE NUTRITIONAL STATUS.
- Authors
NISTOR, Eleonora; DOBREI, Alina; DOBREI, Alin; MATTI, Giovanni
- Abstract
For monitoring the Cabernet Sauvignon nutritional status, leaf blade and petiole tissues collected in flowering and veraison from 2018-2019 growing seasons, were analysed for main macronutrients. Sampling in flowering or veraison, do not show significant differences in variables response. Rather than otherwise, the differences were observed between growing seasons, and the climate variability from 2019 with heavy rain in the spring correlated with low temperatures and the summer and autumn draught associated with hot weather, influenced the absorption of macronutrients, canopy development, and the relationship between leaf blade and petiole macronutrients concentration. Results indicate that leaf blade prevails over petiole for nitrogen (veraison) potassium (flowering) calcium (flowering) and magnesium (flowering) in predicting vine nutrients status while petiole is better indicator for phosphorus (flowering stage). Grape berry mineral main compounds are influence by dry weather and the degree of dehydration. Research results can be used as guide in main macronutrients nutritional status in Cabernet Sauvignon, for regions with similar terroir conditions.
- Subjects
NUTRITIONAL status; PETIOLES; RAINFALL; GRAPES; SPRING; HOT weather conditions; CABERNET wines; THROUGHFALL; BERRIES
- Publication
Scientific Papers. Series B. Horticulture, 2022, Vol 66, Issue 1, p314
- ISSN
2285-5653
- Publication type
Article