Functions and ratio order of the nutrients at the establishment of DRIS norms in 'Valencia' sweet orange

Detalhes bibliográficos
Autor(a) principal: Filho, Francisco de Assis Alves Mourão
Data de Publicação: 2002
Outros Autores: Azevedo, João Carlos, Nick, Josef Andreas
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.
id EMBRAPA-4_9340defd278d3b971c605cfc67b2a398
oai_identifier_str oai:ojs.seer.sct.embrapa.br:article/6326
network_acronym_str EMBRAPA-4
network_name_str Pesquisa Agropecuária Brasileira (Online)
repository_id_str
spelling 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
_version_ 1793416656858382336