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Compositional Nutrient Diagnosis (CND) Applied to Grapevines Grown in Subtropical Climate Region

Authors :
Danilo Eduardo Rozane
Betania Vahl de Paula
George Wellington Bastos de Melo
Eduardo Maciel Haitzmann dos Santos
Edicarla Trentin
Carina Marchezan
Lincon Oliveira Stefanello da Silva
Adriele Tassinari
Lucas Dotto
Filipe Nunes de Oliveira
William Natale
Elena Baldi
Moreno Toselli
Gustavo Brunetto
Source :
Horticulturae, Vol 6, Iss 3, p 56 (2020)
Publication Year :
2020
Publisher :
MDPI AG, 2020.

Abstract

Soil analysis is used to estimate nutrient availability, but nutrient concentrations are not always related to yield in most fruit plants, including grapevines. Thus, additional multivariate mathematical models, such as the compositional nutrient diagnosis (CND), which takes into account leaves nutrient concentration, and yield, can contribute to estimating critical levels or sufficiency bands of elements, as well as to detect deficiency and/or excess of nutrients. The aim of the present study was to establish CND standards, and the critical level and sufficiency band of nutrients, in the grapevine Vitis vinifera L., grown in a subtropical climate region. Leaves were collected in 81 vineyards in the Campanha Gaúcha do Rio Grande do Sul region, Southern Brazil, and analyzed for macro- and micro-nutrient concentration. The yield of each vineyard was assessed. Grapevine nutritional status was calculated through the CND method. CND-r2 indices were effective in establishing the nutritional status of grapevines for macro- and micro-nutrients as sub-optimal, excessive, or balanced. The CND methodology established the critical level and sufficiency bands of nutrients more accurately than the current recommendations for grapevines. Multi-nutrient associations were more effective than the single nutrient determination in defining the threshold of a given nutrient that can reduce grapevine yield.

Details

Language :
English
ISSN :
23117524
Volume :
6
Issue :
3
Database :
Directory of Open Access Journals
Journal :
Horticulturae
Publication Type :
Academic Journal
Accession number :
edsdoj.fce7ab492c62405a82c39526c7dfe42e
Document Type :
article
Full Text :
https://doi.org/10.3390/horticulturae6030056