| Registro completo |
| Provedor de dados: |
PAB
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| País: |
Brazil
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| Título: |
Normal nutrient ranges and nutritional monitoring of 'Pêra' orange trees based on the CND method in different fruiting stages
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| Autores: |
Dias,Jairo Rafael Machado
Wadt,Paulo Guilherme Salvador
Partelli,Fábio Luiz
Espindula,Marcelo Curitiba
Perez,Daniel Vidal
Souza,Fábio Régis
Bergamin,Anderson Cristian
Delarmelinda,Elaine Almeida
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| Data: |
2017-09-01
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| Ano: |
2017
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| Palavras-chave: |
Citrus limonia
Citrus sinensis
DRIS
Leaf sampling
Nutritional balance index
Reference population
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| Resumo: |
Abstract: The objective of this work was to determine reference values for evaluating the nutritional status of 'Pêra' orange trees in different fruiting stages, using the compositional nutrient diagnosis (CND) method. The study used 243 leaf samples from 81 plots, with samplings performed in plants bearing fruits with three and six months of age, and also in the main harvest (nine months). Plots with productivity higher than 30 Mg ha-1 were selected for the establishment of reference standards. Three normal ranges were evaluated for each nutrient in the reference population, comprehended by the confidence interval (CI) of the foliar content averages, by the mean±standard deviation (±SD), and by the mean±⅔SD. Regardless of the normal range of nutrients used, the leaf sampling periods interfered with the nutritional status of 'Pêra' orange tree. The normal ranges obtained from the criteria CI and ±⅔SD of the nutrient contents observed in the reference population frequently provided similar nutritional diagnoses. Zn, Ca, and Fe are the elements that most often limit the production of 'Pêra' orange in the state of Amazonas, Brazil.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000900776
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| Editor: |
Embrapa Secretaria de Pesquisa e Desenvolvimento
Pesquisa Agropecuária Brasileira
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| Relação: |
10.1590/s0100-204x2017000900010
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| Formato: |
text/html
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| Fonte: |
Pesquisa Agropecuária Brasileira v.52 n.9 2017
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| Direitos: |
info:eu-repo/semantics/openAccess
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