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Leaf blade and petiole nutritional evolution and variability throughout the crop season for Vitis Vinifera L. cv. graciano

AuthorsDomínguez, Natalia; García-Escudero, E. ; Romero, Izaskun; Benito Bermejo, Ana ; Martín Rueda, Ignacio
KeywordsNutritional references
Leaf analysis
Issue Date2015
PublisherInstituto Nacional de Investigación y Tecnología Agraria y Alimentaria (España)
CitationSpanish Journal of Agricultural Research 13(3): e0801 (2015)
Abstract© 2015 INIA. An adequate nutritional state of a crop can be kept by means of a well-designed fertilization plan based on the assessment of the nutrient availability throughout the growing season. The objective of this study was to determine the reliability of leaf blade and petiole diagnosis and the period of validity of their references at both flowering and veraison by means of systematic monitoring throughout the complete growing season. The study was carried out in two plots planted with Vitis vinifera L. cv. Graciano within the AOC Rioja (Spain). Blades and petioles were collected throughout a growing season (2006) and total N, P, K, Ca, Mg, Fe, Mn, Zn, Cu and B concentrations were analyzed in both tissues. Results suggest, in general, that petioles have higher variability and lower analysis reproducibility than blades. Therefore, blade could be a more appropriate tissue to evaluate N, P, K, Ca, and Mg at both flowering and veraison in this variety. Micronutrients in blade and petiole showed different variability behaviour in each of the vineyards studied, therefore, based on our results, it was difficult to determine which one could be the best tissue for the nutritional diagnosis of the ‘Graciano’ variety. Seasonal changes of nutrient concentration in both tissues also confirmed the need for reference values for each tissue and each phenological stage.
Publisher version (URL)http://doi.org/10.5424/sjar/2015133-5142
Identifiersissn: 1695-971X
e-issn: 2171-9292
Appears in Collections:(ICVV) Artículos
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