Agronomic efficiency of rock phosphates, partially acidulated phosphates and thermalphosphates in a cerrado soil

Detalhes bibliográficos
Autor(a) principal: Rein, Thomaz A.
Data de Publicação: 2014
Outros Autores: Souza, Djalma M.G. de
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/13449
Resumo: Eighteen phosphorus sources (phosphates) produced from Araxá, MC, Pato de Minas, MC, Tapir; MC, Catalão, GO and Anitápolis, SC, rock phosphates were evaluated during four years. The test crop was soybeans and the relative agronomic efficiency was calculated using as reference the triple superphosphate response curve obtained from one application in the first year. The rock phosphates applied in natura exhibited low agronomic efficiency which almost did not increase with time. The solubility and relative efficiency of the partially acidulated phosphates was directly proportional to the acidulation rate (H+/P2O5 molar ratio), and were not dependent on te rock phosphate origem The fused and calcinated thermalphosphates exhibited high agronomic efficiency. The citric acid or neutral ammonium citrate + water extractant solutions allowed to predict with a good approximation the agronomic efficiency of te phosphates, mainly of te partially acidulated.
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spelling Agronomic efficiency of rock phosphates, partially acidulated phosphates and thermalphosphates in a cerrado soilEficiência agronômica de fosfatos naturais, fosfatos parcialmente acidulados e termofosfatos em solo de cerradophosphorus; phosphates; citric acid; cerrados.fósforo; fosfatos; ácido cítrico; cerrados.Eighteen phosphorus sources (phosphates) produced from Araxá, MC, Pato de Minas, MC, Tapir; MC, Catalão, GO and Anitápolis, SC, rock phosphates were evaluated during four years. The test crop was soybeans and the relative agronomic efficiency was calculated using as reference the triple superphosphate response curve obtained from one application in the first year. The rock phosphates applied in natura exhibited low agronomic efficiency which almost did not increase with time. The solubility and relative efficiency of the partially acidulated phosphates was directly proportional to the acidulation rate (H+/P2O5 molar ratio), and were not dependent on te rock phosphate origem The fused and calcinated thermalphosphates exhibited high agronomic efficiency. The citric acid or neutral ammonium citrate + water extractant solutions allowed to predict with a good approximation the agronomic efficiency of te phosphates, mainly of te partially acidulated.Foram avaliadas, durante quatro anos, 18 fontes de fósforo (fosfatos) produzidos a partir dos concentrados fosfáticos de Araxá, MG, Patos de Minas, MG, Tapir; MG, Catalão, GO e Anitápolis, SC. Os fosfatos constituíram-se destes materiais aplicados in natura (fosfatos naturais), parcialmente solubilizados com ácido sulfúrico e outros acidulantes, ou tratados termicamente. A cultura-teste foi a soja, e a eficiência agronômica relativa (ER) foi quantificada tomando-se como referência a curva de resposta do superfosfato triplo. Os fosfatos naturais apresentaram baixa eficiência agronômica, que praticamente não melhorou com o tempo. A solubilidade e eficiência relativa dos fosfatos parcialmente acidulados foi diretamente proporcional ao grau de acidulação (relação molar H+/1P205 ), independentemente da rocha de origem. A eficiência agronômica dos termofosfatos foi similar à do superfosfato triplo. A solubilidade em Lido cítrico ou citrato neutro de amônio + água permitiu predizer, com boa aproximação, a eficiência agronômica dos fosfatos, principalmente a dos parcialmente acidulados.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraRein, Thomaz A.Souza, Djalma M.G. de2014-04-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/13449Pesquisa Agropecuaria Brasileira; v.25, n.4, abr. 1990; 521-530Pesquisa Agropecuária Brasileira; v.25, n.4, abr. 1990; 521-5301678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/13449/7571info:eu-repo/semantics/openAccess2014-04-17T14:30:51Zoai:ojs.seer.sct.embrapa.br:article/13449Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-17T14:30:51Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Agronomic efficiency of rock phosphates, partially acidulated phosphates and thermalphosphates in a cerrado soil
Eficiência agronômica de fosfatos naturais, fosfatos parcialmente acidulados e termofosfatos em solo de cerrado
title Agronomic efficiency of rock phosphates, partially acidulated phosphates and thermalphosphates in a cerrado soil
spellingShingle Agronomic efficiency of rock phosphates, partially acidulated phosphates and thermalphosphates in a cerrado soil
Rein, Thomaz A.
phosphorus; phosphates; citric acid; cerrados.
fósforo; fosfatos; ácido cítrico; cerrados.
title_short Agronomic efficiency of rock phosphates, partially acidulated phosphates and thermalphosphates in a cerrado soil
title_full Agronomic efficiency of rock phosphates, partially acidulated phosphates and thermalphosphates in a cerrado soil
title_fullStr Agronomic efficiency of rock phosphates, partially acidulated phosphates and thermalphosphates in a cerrado soil
title_full_unstemmed Agronomic efficiency of rock phosphates, partially acidulated phosphates and thermalphosphates in a cerrado soil
title_sort Agronomic efficiency of rock phosphates, partially acidulated phosphates and thermalphosphates in a cerrado soil
author Rein, Thomaz A.
author_facet Rein, Thomaz A.
Souza, Djalma M.G. de
author_role author
author2 Souza, Djalma M.G. de
author2_role author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Rein, Thomaz A.
Souza, Djalma M.G. de
dc.subject.por.fl_str_mv phosphorus; phosphates; citric acid; cerrados.
fósforo; fosfatos; ácido cítrico; cerrados.
topic phosphorus; phosphates; citric acid; cerrados.
fósforo; fosfatos; ácido cítrico; cerrados.
description Eighteen phosphorus sources (phosphates) produced from Araxá, MC, Pato de Minas, MC, Tapir; MC, Catalão, GO and Anitápolis, SC, rock phosphates were evaluated during four years. The test crop was soybeans and the relative agronomic efficiency was calculated using as reference the triple superphosphate response curve obtained from one application in the first year. The rock phosphates applied in natura exhibited low agronomic efficiency which almost did not increase with time. The solubility and relative efficiency of the partially acidulated phosphates was directly proportional to the acidulation rate (H+/P2O5 molar ratio), and were not dependent on te rock phosphate origem The fused and calcinated thermalphosphates exhibited high agronomic efficiency. The citric acid or neutral ammonium citrate + water extractant solutions allowed to predict with a good approximation the agronomic efficiency of te phosphates, mainly of te partially acidulated.
publishDate 2014
dc.date.none.fl_str_mv 2014-04-17
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/13449
url https://seer.sct.embrapa.br/index.php/pab/article/view/13449
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/13449/7571
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.25, n.4, abr. 1990; 521-530
Pesquisa Agropecuária Brasileira; v.25, n.4, abr. 1990; 521-530
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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