Probability of sugarcane response to potassium fertilizer as a function of soil K+ (Ca2++Mg2+)-0,5 ratio
Autor(a) principal: | |
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Data de Publicação: | 2001 |
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/6241 |
Resumo: | This study was carried out to evaluate the effect of soil K+ (Ca2++Mg2+)-0.5 ratio on sugarcane yield response probability to potassium fertilizer. Results of 106 experiments of potassium fertilizer on sugarcane and their soil exchangeable K+, Ca2+ and Mg2+ were studied, evaluating the K+ (Ca2++Mg2+)-0.5 ratio in each experiment. The statistical method of logistic regression was used, carried out through CATMOD procedure of Statistical Analysis System. There was no difference of behavior of this ratio between plant cane and ratoons; therefore this characteristic was not significant during the adjustment of the statistical model. Soil K+ (Ca2++Mg2+)-0.5 ratio affected sugarcane yield response likelihood. The increase of K+ (Ca2++Mg2+)-0.5 ratio decreased the yield response probability. The K+ (Ca2++Mg2+)-0.5 ratio was classified as low ( < 0.2547), medium (0.2547 to 0.3349) and high ( > 0.3349). The soil K+ (Ca2++Mg2+)-0.5 ratio should be used as another criterion to guide the potassium fertilizer recommendation to sugarcane crops. |
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Probability of sugarcane response to potassium fertilizer as a function of soil K+ (Ca2++Mg2+)-0,5 ratioProbabilidade de resposta da cana-de-açúcar à adubação potássica em razão da relação K+ (Ca2++Mg2+)-0,5 do soloSaccharum officinarum; mineral nutrients; nutrient uptake; yieldsSaccharum officinarum; nutrientes minerais; absorção de nutrientes; rendimentoThis study was carried out to evaluate the effect of soil K+ (Ca2++Mg2+)-0.5 ratio on sugarcane yield response probability to potassium fertilizer. Results of 106 experiments of potassium fertilizer on sugarcane and their soil exchangeable K+, Ca2+ and Mg2+ were studied, evaluating the K+ (Ca2++Mg2+)-0.5 ratio in each experiment. The statistical method of logistic regression was used, carried out through CATMOD procedure of Statistical Analysis System. There was no difference of behavior of this ratio between plant cane and ratoons; therefore this characteristic was not significant during the adjustment of the statistical model. Soil K+ (Ca2++Mg2+)-0.5 ratio affected sugarcane yield response likelihood. The increase of K+ (Ca2++Mg2+)-0.5 ratio decreased the yield response probability. The K+ (Ca2++Mg2+)-0.5 ratio was classified as low ( < 0.2547), medium (0.2547 to 0.3349) and high ( > 0.3349). The soil K+ (Ca2++Mg2+)-0.5 ratio should be used as another criterion to guide the potassium fertilizer recommendation to sugarcane crops.O objetivo deste trabalho foi avaliar a probabilidade de resposta da produção de cana-de-açúcar à adubação potássica, em razão da relação K+ (Ca2++Mg2+)-0,5 no solo. Foram compilados dados de 106 experimentos de adubação potássica na cana-de-açúcar. Em cada experimento foi registrado o ciclo de cultivo (cana-planta ou cana-soca), os teores de K, Ca e Mg do solo antes da adubação potássica, a relação K+ (Ca2++Mg2+)-0,5, e se houve, ou não, resposta estatisticamente significativa da produção à adubação potássica. Foi utilizado o método estatístico de regressão logística, efetuado pelo procedimento CATMOD do Statistical Analysis System. A característica ciclo de cultivo foi eliminada do modelo, pois esta se apresentou como não-significativa no ajuste estatístico. A relação K+ (Ca2++Mg2+)-0,5 do solo influenciou a probabilidade de resposta da produção de cana-de-açúcar à adubação potássica. À medida que a relação K+ (Ca2++Mg2+)-0,5 aumentou, a probabilidade de resposta da produção de cana-de-açúcar à adubação potássica diminuiu. A relação K+ (Ca2++Mg2+)-0,5 no solo foi classificada em baixa ( < 0,2547), média (0,2547 a 0,3349) e alta ( > 0,3349). A relação K+ (Ca2++Mg2+)-0,5 no solo deve ser usada como mais um critério para orientar a adubação potássica na cultura da cana-de-açúcar.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraJunior, Roberto dos Anjos Reis2001-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/6241Pesquisa Agropecuaria Brasileira; v.36, n.9, set. 2001; 1175-1183Pesquisa Agropecuária Brasileira; v.36, n.9, set. 2001; 1175-11831678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/6241/3306info:eu-repo/semantics/openAccess2010-08-09T19:17:15Zoai:ojs.seer.sct.embrapa.br:article/6241Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2010-08-09T19:17:15Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Probability of sugarcane response to potassium fertilizer as a function of soil K+ (Ca2++Mg2+)-0,5 ratio Probabilidade de resposta da cana-de-açúcar à adubação potássica em razão da relação K+ (Ca2++Mg2+)-0,5 do solo |
title |
Probability of sugarcane response to potassium fertilizer as a function of soil K+ (Ca2++Mg2+)-0,5 ratio |
spellingShingle |
Probability of sugarcane response to potassium fertilizer as a function of soil K+ (Ca2++Mg2+)-0,5 ratio Junior, Roberto dos Anjos Reis Saccharum officinarum; mineral nutrients; nutrient uptake; yields Saccharum officinarum; nutrientes minerais; absorção de nutrientes; rendimento |
title_short |
Probability of sugarcane response to potassium fertilizer as a function of soil K+ (Ca2++Mg2+)-0,5 ratio |
title_full |
Probability of sugarcane response to potassium fertilizer as a function of soil K+ (Ca2++Mg2+)-0,5 ratio |
title_fullStr |
Probability of sugarcane response to potassium fertilizer as a function of soil K+ (Ca2++Mg2+)-0,5 ratio |
title_full_unstemmed |
Probability of sugarcane response to potassium fertilizer as a function of soil K+ (Ca2++Mg2+)-0,5 ratio |
title_sort |
Probability of sugarcane response to potassium fertilizer as a function of soil K+ (Ca2++Mg2+)-0,5 ratio |
author |
Junior, Roberto dos Anjos Reis |
author_facet |
Junior, Roberto dos Anjos Reis |
author_role |
author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Junior, Roberto dos Anjos Reis |
dc.subject.por.fl_str_mv |
Saccharum officinarum; mineral nutrients; nutrient uptake; yields Saccharum officinarum; nutrientes minerais; absorção de nutrientes; rendimento |
topic |
Saccharum officinarum; mineral nutrients; nutrient uptake; yields Saccharum officinarum; nutrientes minerais; absorção de nutrientes; rendimento |
description |
This study was carried out to evaluate the effect of soil K+ (Ca2++Mg2+)-0.5 ratio on sugarcane yield response probability to potassium fertilizer. Results of 106 experiments of potassium fertilizer on sugarcane and their soil exchangeable K+, Ca2+ and Mg2+ were studied, evaluating the K+ (Ca2++Mg2+)-0.5 ratio in each experiment. The statistical method of logistic regression was used, carried out through CATMOD procedure of Statistical Analysis System. There was no difference of behavior of this ratio between plant cane and ratoons; therefore this characteristic was not significant during the adjustment of the statistical model. Soil K+ (Ca2++Mg2+)-0.5 ratio affected sugarcane yield response likelihood. The increase of K+ (Ca2++Mg2+)-0.5 ratio decreased the yield response probability. The K+ (Ca2++Mg2+)-0.5 ratio was classified as low ( < 0.2547), medium (0.2547 to 0.3349) and high ( > 0.3349). The soil K+ (Ca2++Mg2+)-0.5 ratio should be used as another criterion to guide the potassium fertilizer recommendation to sugarcane crops. |
publishDate |
2001 |
dc.date.none.fl_str_mv |
2001-09-01 |
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/6241 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/6241 |
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/6241/3306 |
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.36, n.9, set. 2001; 1175-1183 Pesquisa Agropecuária Brasileira; v.36, n.9, set. 2001; 1175-1183 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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1793416714366484480 |