Green manure - corn rotation and phosphorus adsorption in an Oxisol

Detalhes bibliográficos
Autor(a) principal: Naves Silva, Marx Leandro
Data de Publicação: 1997
Outros Autores: Curi, Nilton, Blancaneaux, Philippe, de Lima, José Maria, de Carvalho, Arminda Moreira
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/4693
Resumo: The objectives of this study were to quantify the P adsorption maximum in different green manure cropping systems and to evaluate the influence of the decomposition rate of green manure and some soil chemical properties upon such adsorption. It was studied the 0 to 20 cm layer of an Oxisol (Dark Red Latosol) under the following treatments: soil under native cerrado, bare soil (five years) and the following green manure cultivated in the dry season, after corn (cv. Pioneer 3072): Crotalaria juncea, Cajanus cajan, Mucuna aterrima and Brachiaria ruziziensis. The adsorption values were adjusted to Langmuir isoterm for determination of P adsorption maximum capacity (PAMC). The general trend of the P maximum adsorption followed the order: discovered soil > Cajanus cajan > Crotalaria juncea > Mucuna aterrima > Brachiaria ruziziensis > native cerrado. Soil organic matter amount and green manure decomposition rate had negative correlation with the P maximum adsorption, with correlation coefficients of 0.705 (P < 0.06) and 0.983 (P < 0.01), respectively. The PAMC for the deepest layer was 56% higher than that of the superficial layer, suggesting the importance of organic matter on reducing P adsorption.
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spelling Green manure - corn rotation and phosphorus adsorption in an OxisolRotação adubo verde - milho e adsorção de fósforo em Latossolo Vermelho-Escurocropping systems; cerrado; decomposition rate; organic mattersistemas de cultivo; cerrado; taxa de composição; matéria orgânicaThe objectives of this study were to quantify the P adsorption maximum in different green manure cropping systems and to evaluate the influence of the decomposition rate of green manure and some soil chemical properties upon such adsorption. It was studied the 0 to 20 cm layer of an Oxisol (Dark Red Latosol) under the following treatments: soil under native cerrado, bare soil (five years) and the following green manure cultivated in the dry season, after corn (cv. Pioneer 3072): Crotalaria juncea, Cajanus cajan, Mucuna aterrima and Brachiaria ruziziensis. The adsorption values were adjusted to Langmuir isoterm for determination of P adsorption maximum capacity (PAMC). The general trend of the P maximum adsorption followed the order: discovered soil > Cajanus cajan > Crotalaria juncea > Mucuna aterrima > Brachiaria ruziziensis > native cerrado. Soil organic matter amount and green manure decomposition rate had negative correlation with the P maximum adsorption, with correlation coefficients of 0.705 (P < 0.06) and 0.983 (P < 0.01), respectively. The PAMC for the deepest layer was 56% higher than that of the superficial layer, suggesting the importance of organic matter on reducing P adsorption.Este estudo teve como objetivos quantificar a capacidade máxima de adsorção de P em sistemas de cultivo com adubos verdes e avaliar a influência da taxa de decomposição do adubo verde e de algumas propriedades químicas do solo sobre esta adsorção. Avaliou-se a camada de 0 a 20 cm de um Latossolo Vermelho-Escuro sob dois tratamentos: solo sob cerrado nativo e solo descoberto (cinco anos); e os seguintes adubos verdes cultivados na entressafra após o milho (cv. Pioneer 3072): crotalária (Crotalaria juncea), guandu (Cajanus cajan), mucuna preta (Mucuna aterrima) e braquiária (Brachiaria ruziziensis). Os valores de adsorção foram ajustados à isoterma de Langmuir para determinação da capacidade máxima de adsorção de P (CMAF). Os tratamentos em ordem decrescente de adsorção máxima foram: solo descoberto > guandu > crotalária > mucuna preta > braquiária > cerrado nativo. O teor de matéria orgânica e a taxa de decomposição dos adubos verdes apresentaram correlação negativa com a adsorção máxima de P, com coeficientes de correlação, respectivamente, de 0,705 (P < 0,06) e 0,983 (P < 0,01). A CMAF para a camada mais profunda foi 56% maior que da camada superficial, reafirmando a importância da matéria orgânica na redução da adsorção de fósforo.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraNaves Silva, Marx LeandroCuri, NiltonBlancaneaux, Philippede Lima, José Mariade Carvalho, Arminda Moreira1997-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/4693Pesquisa Agropecuaria Brasileira; v.32, n.6, jun. 1997; 649-654Pesquisa Agropecuária Brasileira; v.32, n.6, jun. 1997; 649-6541678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/4693/7353info:eu-repo/semantics/openAccess2015-04-07T17:48:59Zoai:ojs.seer.sct.embrapa.br:article/4693Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2015-04-07T17:48:59Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Green manure - corn rotation and phosphorus adsorption in an Oxisol
Rotação adubo verde - milho e adsorção de fósforo em Latossolo Vermelho-Escuro
title Green manure - corn rotation and phosphorus adsorption in an Oxisol
spellingShingle Green manure - corn rotation and phosphorus adsorption in an Oxisol
Naves Silva, Marx Leandro
cropping systems; cerrado; decomposition rate; organic matter
sistemas de cultivo; cerrado; taxa de composição; matéria orgânica
title_short Green manure - corn rotation and phosphorus adsorption in an Oxisol
title_full Green manure - corn rotation and phosphorus adsorption in an Oxisol
title_fullStr Green manure - corn rotation and phosphorus adsorption in an Oxisol
title_full_unstemmed Green manure - corn rotation and phosphorus adsorption in an Oxisol
title_sort Green manure - corn rotation and phosphorus adsorption in an Oxisol
author Naves Silva, Marx Leandro
author_facet Naves Silva, Marx Leandro
Curi, Nilton
Blancaneaux, Philippe
de Lima, José Maria
de Carvalho, Arminda Moreira
author_role author
author2 Curi, Nilton
Blancaneaux, Philippe
de Lima, José Maria
de Carvalho, Arminda Moreira
author2_role author
author
author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Naves Silva, Marx Leandro
Curi, Nilton
Blancaneaux, Philippe
de Lima, José Maria
de Carvalho, Arminda Moreira
dc.subject.por.fl_str_mv cropping systems; cerrado; decomposition rate; organic matter
sistemas de cultivo; cerrado; taxa de composição; matéria orgânica
topic cropping systems; cerrado; decomposition rate; organic matter
sistemas de cultivo; cerrado; taxa de composição; matéria orgânica
description The objectives of this study were to quantify the P adsorption maximum in different green manure cropping systems and to evaluate the influence of the decomposition rate of green manure and some soil chemical properties upon such adsorption. It was studied the 0 to 20 cm layer of an Oxisol (Dark Red Latosol) under the following treatments: soil under native cerrado, bare soil (five years) and the following green manure cultivated in the dry season, after corn (cv. Pioneer 3072): Crotalaria juncea, Cajanus cajan, Mucuna aterrima and Brachiaria ruziziensis. The adsorption values were adjusted to Langmuir isoterm for determination of P adsorption maximum capacity (PAMC). The general trend of the P maximum adsorption followed the order: discovered soil > Cajanus cajan > Crotalaria juncea > Mucuna aterrima > Brachiaria ruziziensis > native cerrado. Soil organic matter amount and green manure decomposition rate had negative correlation with the P maximum adsorption, with correlation coefficients of 0.705 (P < 0.06) and 0.983 (P < 0.01), respectively. The PAMC for the deepest layer was 56% higher than that of the superficial layer, suggesting the importance of organic matter on reducing P adsorption.
publishDate 1997
dc.date.none.fl_str_mv 1997-06-01
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/4693
url https://seer.sct.embrapa.br/index.php/pab/article/view/4693
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/4693/7353
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.32, n.6, jun. 1997; 649-654
Pesquisa Agropecuária Brasileira; v.32, n.6, jun. 1997; 649-654
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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