Functions and ratio order of the nutrients at the establishment of DRIS norms in 'Valencia' sweet orange
Autor(a) principal: | |
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Data de Publicação: | 2002 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/6326 |
Resumo: | Diagnosis and Recommendation Integrated System (DRIS) has been a useful tool for nutrient diagnosis of several crops. This research aimed to establish adequate norms for DRIS through three methods (Beaufils, Elwali & Gascho and Jones) to calculate ratio functions and two criteria (Letzsch and Nick) for choosing the ratio order of the nutrients for 'Valencia' sweet orange budded on three rootstocks, in Mogi Guaçú, SP, Brazil. Data referred to yield, rootstock and concentrations of N, P, K, Ca, Mg, S, Fe, Mn, Cu, Zn and B in leaves of non fruiting terminals, for each plot, were processed for 1994 through 1998. Nutritional Balance Index (NBI) was calculated by the average of the sum (disregarding the sign) of all nutritional index values and dry matter index. DRIS and NBI indexes were calculated and the r2 values (yield related to NBI) were obtained for each calculation method. DRIS calculation method of the ratio function, recommended by Jones, presented better correlation with yield. The criterion for choosing the ratio order of the nutrients recommended by Nick was more efficient. Specific populations, with reduced number of observations, standardized by rootstock and referred to one or two sampling years were more efficient data for calculation of DRIS norms. |
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Functions and ratio order of the nutrients at the establishment of DRIS norms in 'Valencia' sweet orangeFunções e ordem da razão dos nutrientes no estabelecimento de normas DRIS em laranjeira 'Valência'Citrus sinensis; foliar diagnosis; nutrient balance; nutritional status; analytical methodsCitrus sinensis; diagnose foliar; equilíbrio de nutrientes; estado nutricional; método de análiseDiagnosis and Recommendation Integrated System (DRIS) has been a useful tool for nutrient diagnosis of several crops. This research aimed to establish adequate norms for DRIS through three methods (Beaufils, Elwali & Gascho and Jones) to calculate ratio functions and two criteria (Letzsch and Nick) for choosing the ratio order of the nutrients for 'Valencia' sweet orange budded on three rootstocks, in Mogi Guaçú, SP, Brazil. Data referred to yield, rootstock and concentrations of N, P, K, Ca, Mg, S, Fe, Mn, Cu, Zn and B in leaves of non fruiting terminals, for each plot, were processed for 1994 through 1998. Nutritional Balance Index (NBI) was calculated by the average of the sum (disregarding the sign) of all nutritional index values and dry matter index. DRIS and NBI indexes were calculated and the r2 values (yield related to NBI) were obtained for each calculation method. DRIS calculation method of the ratio function, recommended by Jones, presented better correlation with yield. The criterion for choosing the ratio order of the nutrients recommended by Nick was more efficient. Specific populations, with reduced number of observations, standardized by rootstock and referred to one or two sampling years were more efficient data for calculation of DRIS norms.O sistema integrado de diagnose e recomendação DRIS (Diagnosis and Recommendation Integrated System) tem sido uma boa alternativa para a avaliação do estado nutricional de diversas culturas. O objetivo deste trabalho foi calcular índices DRIS mediante o uso de três métodos (Beaufils, Elwali & Gascho e Jones) de cálculo das funções das razões dos nutrientes e de dois critérios (Letzch e Nick) para a escolha da ordem da razão dos nutrientes, em pomares comerciais irrigados de laranjeira 'Valência'. Informações sobre a produtividade, porta-enxerto e teor de N, P, K, Ca, Mg, S, Fe, Mn, Cu, Zn e B em folhas de ramos não-frutíferos de cada talhão foram processadas nos anos de 1994 a 1998. O índice de balanço nutricional (IBN) foi calculado pela média da soma dos valores em módulo dos índices nutricionais e do índice de matéria seca. Os índices DRIS e IBN foram calculados e os valores de r2 (produtividade em função de IBN) foram obtidos para cada método. O método Jones para cálculo do DRIS apresentou melhor correlação com a produtividade, e o critério Nick mostrou-se mais eficiente na escolha da ordem da razão dos nutrientes. Populações específicas, com pequeno número de observações, padronizadas quanto ao porta-enxerto e referentes a um ou dois anos de amostragem foliar e produção foram bancos de dados eficientes para a obtenção das normas DRIS.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraFilho, Francisco de Assis Alves MourãoAzevedo, João CarlosNick, Josef Andreas2002-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/6326Pesquisa Agropecuaria Brasileira; v.37, n.2, fev. 2002; 185-192Pesquisa Agropecuária Brasileira; v.37, n.2, fev. 2002; 185-1921678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/6326/3383info:eu-repo/semantics/openAccess2014-07-21T19:21:35Zoai:ojs.seer.sct.embrapa.br:article/6326Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-07-21T19:21:35Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Functions and ratio order of the nutrients at the establishment of DRIS norms in 'Valencia' sweet orange Funções e ordem da razão dos nutrientes no estabelecimento de normas DRIS em laranjeira 'Valência' |
title |
Functions and ratio order of the nutrients at the establishment of DRIS norms in 'Valencia' sweet orange |
spellingShingle |
Functions and ratio order of the nutrients at the establishment of DRIS norms in 'Valencia' sweet orange Filho, Francisco de Assis Alves Mourão Citrus sinensis; foliar diagnosis; nutrient balance; nutritional status; analytical methods Citrus sinensis; diagnose foliar; equilíbrio de nutrientes; estado nutricional; método de análise |
title_short |
Functions and ratio order of the nutrients at the establishment of DRIS norms in 'Valencia' sweet orange |
title_full |
Functions and ratio order of the nutrients at the establishment of DRIS norms in 'Valencia' sweet orange |
title_fullStr |
Functions and ratio order of the nutrients at the establishment of DRIS norms in 'Valencia' sweet orange |
title_full_unstemmed |
Functions and ratio order of the nutrients at the establishment of DRIS norms in 'Valencia' sweet orange |
title_sort |
Functions and ratio order of the nutrients at the establishment of DRIS norms in 'Valencia' sweet orange |
author |
Filho, Francisco de Assis Alves Mourão |
author_facet |
Filho, Francisco de Assis Alves Mourão Azevedo, João Carlos Nick, Josef Andreas |
author_role |
author |
author2 |
Azevedo, João Carlos Nick, Josef Andreas |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Filho, Francisco de Assis Alves Mourão Azevedo, João Carlos Nick, Josef Andreas |
dc.subject.por.fl_str_mv |
Citrus sinensis; foliar diagnosis; nutrient balance; nutritional status; analytical methods Citrus sinensis; diagnose foliar; equilíbrio de nutrientes; estado nutricional; método de análise |
topic |
Citrus sinensis; foliar diagnosis; nutrient balance; nutritional status; analytical methods Citrus sinensis; diagnose foliar; equilíbrio de nutrientes; estado nutricional; método de análise |
description |
Diagnosis and Recommendation Integrated System (DRIS) has been a useful tool for nutrient diagnosis of several crops. This research aimed to establish adequate norms for DRIS through three methods (Beaufils, Elwali & Gascho and Jones) to calculate ratio functions and two criteria (Letzsch and Nick) for choosing the ratio order of the nutrients for 'Valencia' sweet orange budded on three rootstocks, in Mogi Guaçú, SP, Brazil. Data referred to yield, rootstock and concentrations of N, P, K, Ca, Mg, S, Fe, Mn, Cu, Zn and B in leaves of non fruiting terminals, for each plot, were processed for 1994 through 1998. Nutritional Balance Index (NBI) was calculated by the average of the sum (disregarding the sign) of all nutritional index values and dry matter index. DRIS and NBI indexes were calculated and the r2 values (yield related to NBI) were obtained for each calculation method. DRIS calculation method of the ratio function, recommended by Jones, presented better correlation with yield. The criterion for choosing the ratio order of the nutrients recommended by Nick was more efficient. Specific populations, with reduced number of observations, standardized by rootstock and referred to one or two sampling years were more efficient data for calculation of DRIS norms. |
publishDate |
2002 |
dc.date.none.fl_str_mv |
2002-02-01 |
dc.type.none.fl_str_mv |
|
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/6326 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/6326 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/6326/3383 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
dc.source.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira; v.37, n.2, fev. 2002; 185-192 Pesquisa Agropecuária Brasileira; v.37, n.2, fev. 2002; 185-192 1678-3921 0100-104x reponame:Pesquisa Agropecuária Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Agropecuária Brasileira (Online) |
collection |
Pesquisa Agropecuária Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
pab@sct.embrapa.br || sct.pab@embrapa.br |
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1793416656858382336 |