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vol.37 número1MASSA SECA E ACÚMULO DE NUTRIENTES EM MUDAS ENXERTADAS DE PEREIRA EM SISTEMA HIDROPÔNICOQUEIMA DOS RAMOS E DESFOLHA CAUSADA POR C. HORIIEM CAQUIZEIRO NO BRASIL. índice de autoresíndice de assuntospesquisa de artigos
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Revista Brasileira de Fruticultura

versão impressa ISSN 0100-2945

Resumo

TEIXEIRA, LUIZ ANTONIO JUNQUEIRA et al. DRIS NORMS AND CRITICAL LEAF NUTRIENT LEVELS FOR ‘NIAGARA ROSADA’ GRAPE IN JUNDIAÍ REGION, SÃO PAULO (BRASIL). Rev. Bras. Frutic. [online]. 2015, vol.37, n.1, pp.247-255. ISSN 0100-2945.  https://doi.org/10.1590/0100-2945-409/13.

ABSTRACT

Preliminary Diagnosis and Recommendation Integrated System (DRIS) norms and critical leaf nutrient levels (CLN) for ‘Niagara Rosada’ grape grafted on the rootstock ‘IAC 766’ growing in the region of Jundiaí, State of São Paulo (Brazil) are presented. DRIS norms and CLN were established from a data bank of leaf nutrient concentration(N, P, K, Ca and Mg) and fruit yield with 116 records. The data bank gets information from fertilizationexperiments and from a field survey comprising four crop cycles. The data were divided into high-yielding (>26 t/ha) and low-yielding (<26 t/ha) subpopulations and norms were computed using standard DRIS procedures. Even with the diversity of cropping conditions, the relationship between the nutrient balance index from DRIS and fruit yield was highly significant (R2 = 0.48, p<0.0001), indicating that part of the variation in productivity of vineyards can be credited to nutritional status of the plants. The CLNs were derived using multiple linear regressions relating to the foliar nutrient concentration with DRIS indices of all nutrients. The CLNs for N, P, K, Ca, and Mg were 38.0, 3.0, 11.4, 13.7, and 3.5 g/ kg, respectively.

Palavras-chave : plant analysis; plant nutrition; Vitis spp.; nutritional diagnose.

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