Effect of Araxá rockphosphate and simple superphosphate on some physiochemical properties and on the available residual P of an Oxic Paleudalf
Autor(a) principal: | |
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Data de Publicação: | 2014 |
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/15592 |
Resumo: | The experiment was developed using surface soil samples (TRE, Oxic Paleudalf) from the Experimental Field Station of ESALQ, located in Piracicaba, SP, Brazil. This soil had received during the period al three years 6 ton/ha of Araxá rockphosphate (34,6% P2O5) or 1,2 ton/ha of simple superphosphate (20% P2O5) while three crops of beans (Phaseolus vulgaris, L.) were grown. This greenhouse experiment had the objective of evaluating the effect al these fertilizer applications on some physico-chemical properties of the soil, and also study the residual P effect through the Olsen and "A" value methods. Results indicate that Araxá rockphosphate (48.4% CaO), although applied at high rate, did not affect soil reaction. On the other hand, both fertilizers increased the exchangeable Ca2+ level approximately 0,5 mE/100 g. In short term (less than three years), the response of Araxá rockphosphate corresponded to its 2% citric acid soluble P2O5, content (4%) rather than to its total P2O5 content. Through "A" values (using KH232PO4) it was shown that the residual effect of simple superphosphate (108.6 kg P2O5/ha) was similar to the Araxá rockphosphate (136.6kg P2O5/ha), but these were significantly greater than the natural P content of the soil (54.0 kg P2O5/ha). The evaluation of available P in the soil (with and without fertilizer) by Olsen's method, had an efficiency of 64 and 94% (respectively) as compared to the "A" value method. |
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Effect of Araxá rockphosphate and simple superphosphate on some physiochemical properties and on the available residual P of an Oxic PaleudalfEfeito do fosfato-de-araxá e superfosfato simples em algumas propriedades físico-químicas e do fósforo residual disponível em um solo Oxic Paleudalf"A" values; residual effect of phosphate; natural phosphate; beanvalor "A"; efeito residual de fosfatos; fosfato natural; feijãoThe experiment was developed using surface soil samples (TRE, Oxic Paleudalf) from the Experimental Field Station of ESALQ, located in Piracicaba, SP, Brazil. This soil had received during the period al three years 6 ton/ha of Araxá rockphosphate (34,6% P2O5) or 1,2 ton/ha of simple superphosphate (20% P2O5) while three crops of beans (Phaseolus vulgaris, L.) were grown. This greenhouse experiment had the objective of evaluating the effect al these fertilizer applications on some physico-chemical properties of the soil, and also study the residual P effect through the Olsen and "A" value methods. Results indicate that Araxá rockphosphate (48.4% CaO), although applied at high rate, did not affect soil reaction. On the other hand, both fertilizers increased the exchangeable Ca2+ level approximately 0,5 mE/100 g. In short term (less than three years), the response of Araxá rockphosphate corresponded to its 2% citric acid soluble P2O5, content (4%) rather than to its total P2O5 content. Through "A" values (using KH232PO4) it was shown that the residual effect of simple superphosphate (108.6 kg P2O5/ha) was similar to the Araxá rockphosphate (136.6kg P2O5/ha), but these were significantly greater than the natural P content of the soil (54.0 kg P2O5/ha). The evaluation of available P in the soil (with and without fertilizer) by Olsen's method, had an efficiency of 64 and 94% (respectively) as compared to the "A" value method.Utilizando-se amostras superficiais de solo (TRE, Oxic Paleudalf) da área da Estação Agrometeorológica da ESALQ/USP (Piracicaba, SP), que havia recebido durante um período de três anos adubações de 6 t/ha de fosfato-de-araxá (34,6% de P2O5) ou 1,2 t/ha de superfosfato simples (20% P2O5), em três culturas de feijão (Phaseolus vulgaris L.), cultivar Carioca, realizou-se o presente trabalho em casa-de-vegetação, empregando-se a mesma cultura. O objetivo foi o de avaliar o efeito destes adubos em algumas características físico-químicas do solo e o efeito residual de P, pelos métodos do valor "A" e o de Olsen. Os resultados obtidos indicaram que o fosfato-de-Araxá (48,4% CaO), embora aplicado em alta dose, não afetou significativamente a reação do solo. Por outro lado, tanto o fosfato-de-Araxá, como superfosfato simples, incrementaram o Ca+2 trocável em - 0,5 mE/100 g. A curto prazo (menos de três anos), a resposta de fosfato-de-araxá como adubo fosfatado correspondeu ao seu teor de P105 solúvel em ácido citrico a 2% (4% P2O5) e não a seu teor total. Pelo valor "A" (usando-se KH232PO2), o efeito residual do superfosfato simples (108,6kg P2O5/ha) foi similar ao do fosfato-de-araxá (136,6 kg P2O5/ha), significativamente maior que o teor natural da P do solo (54,0 kg P2O5/ha). A avaliação do P disponível do solo, com ou sem adubo, pelo método de Olsen, teve uma eficiência de 64 e 94% em relação ao valor "A", respectivamente.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraC., Segundo UrquiagaReichardt, K.Libardi, P.L2014-04-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/15592Pesquisa Agropecuaria Brasileira; v.17, n.2, fev. 1982; 195-202Pesquisa Agropecuária Brasileira; v.17, n.2, fev. 1982; 195-2021678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/15592/9591info:eu-repo/semantics/openAccess2014-04-16T12:24:16Zoai:ojs.seer.sct.embrapa.br:article/15592Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-16T12:24:16Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Effect of Araxá rockphosphate and simple superphosphate on some physiochemical properties and on the available residual P of an Oxic Paleudalf Efeito do fosfato-de-araxá e superfosfato simples em algumas propriedades físico-químicas e do fósforo residual disponível em um solo Oxic Paleudalf |
title |
Effect of Araxá rockphosphate and simple superphosphate on some physiochemical properties and on the available residual P of an Oxic Paleudalf |
spellingShingle |
Effect of Araxá rockphosphate and simple superphosphate on some physiochemical properties and on the available residual P of an Oxic Paleudalf C., Segundo Urquiaga "A" values; residual effect of phosphate; natural phosphate; bean valor "A"; efeito residual de fosfatos; fosfato natural; feijão |
title_short |
Effect of Araxá rockphosphate and simple superphosphate on some physiochemical properties and on the available residual P of an Oxic Paleudalf |
title_full |
Effect of Araxá rockphosphate and simple superphosphate on some physiochemical properties and on the available residual P of an Oxic Paleudalf |
title_fullStr |
Effect of Araxá rockphosphate and simple superphosphate on some physiochemical properties and on the available residual P of an Oxic Paleudalf |
title_full_unstemmed |
Effect of Araxá rockphosphate and simple superphosphate on some physiochemical properties and on the available residual P of an Oxic Paleudalf |
title_sort |
Effect of Araxá rockphosphate and simple superphosphate on some physiochemical properties and on the available residual P of an Oxic Paleudalf |
author |
C., Segundo Urquiaga |
author_facet |
C., Segundo Urquiaga Reichardt, K. Libardi, P.L |
author_role |
author |
author2 |
Reichardt, K. Libardi, P.L |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
C., Segundo Urquiaga Reichardt, K. Libardi, P.L |
dc.subject.por.fl_str_mv |
"A" values; residual effect of phosphate; natural phosphate; bean valor "A"; efeito residual de fosfatos; fosfato natural; feijão |
topic |
"A" values; residual effect of phosphate; natural phosphate; bean valor "A"; efeito residual de fosfatos; fosfato natural; feijão |
description |
The experiment was developed using surface soil samples (TRE, Oxic Paleudalf) from the Experimental Field Station of ESALQ, located in Piracicaba, SP, Brazil. This soil had received during the period al three years 6 ton/ha of Araxá rockphosphate (34,6% P2O5) or 1,2 ton/ha of simple superphosphate (20% P2O5) while three crops of beans (Phaseolus vulgaris, L.) were grown. This greenhouse experiment had the objective of evaluating the effect al these fertilizer applications on some physico-chemical properties of the soil, and also study the residual P effect through the Olsen and "A" value methods. Results indicate that Araxá rockphosphate (48.4% CaO), although applied at high rate, did not affect soil reaction. On the other hand, both fertilizers increased the exchangeable Ca2+ level approximately 0,5 mE/100 g. In short term (less than three years), the response of Araxá rockphosphate corresponded to its 2% citric acid soluble P2O5, content (4%) rather than to its total P2O5 content. Through "A" values (using KH232PO4) it was shown that the residual effect of simple superphosphate (108.6 kg P2O5/ha) was similar to the Araxá rockphosphate (136.6kg P2O5/ha), but these were significantly greater than the natural P content of the soil (54.0 kg P2O5/ha). The evaluation of available P in the soil (with and without fertilizer) by Olsen's method, had an efficiency of 64 and 94% (respectively) as compared to the "A" value method. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-04-16 |
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/15592 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/15592 |
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/15592/9591 |
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.17, n.2, fev. 1982; 195-202 Pesquisa Agropecuária Brasileira; v.17, n.2, fev. 1982; 195-202 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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1793416685546373120 |