Aggregates stability and resistance in Dark-Red Latosol (Oxisol) under corn-green manure succession
Autor(a) principal: | |
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Data de Publicação: | 1998 |
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/4818 |
Resumo: | Latosols (oxisols) under cerrado vegetation in their natural condition present, in general, high structural stability due mainly to the performance of aluminum and iron oxides and organic matter. In the Cerrado region, however, the practice of burning cultural residues and the excessive use of harrow during soil preparation is very common, mainly the plowing harrow, which pulverizes the soil with consequent weakness and destruction of soil structure. This study aimed to evaluate the resistance of aggregates of a cerrado phase, clayey texture, Dark-Red Latosol (Oxisol) to simulated raindrop impact as well as the geometrical average diameter of aggregates of this soil under different green manure-corn succession systems and under native cerrado. The tested green manure species were Crotalaria juncea, Cajanus cajan, Mucuna aterrima, Brachiaria ruziziensis and Canavalia ensiformis, cultivated in rotation with corn (cv. Pioneer 3072), during two years. The native cerrado presented larger and more stable aggregates, and it was necessary higher kinectic energy for disrupting them. In the green manure systems, brachiaria showed higher aggregation action than the leguminous species. The simulated raindrop impact method presented good performance, leading to better distinction among the treatments in relation to the aggregates stability method. |
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Aggregates stability and resistance in Dark-Red Latosol (Oxisol) under corn-green manure successionEstabilidade e resistência de agregados de Latossolo Vermelho-Escuro cultivado com sucessão milho-adubo verdecerrado vegetation; organic matter; aggregation; kinectic energy; green manurecerrado; matéria orgânica; agregação; energia cinética; adubo verdeLatosols (oxisols) under cerrado vegetation in their natural condition present, in general, high structural stability due mainly to the performance of aluminum and iron oxides and organic matter. In the Cerrado region, however, the practice of burning cultural residues and the excessive use of harrow during soil preparation is very common, mainly the plowing harrow, which pulverizes the soil with consequent weakness and destruction of soil structure. This study aimed to evaluate the resistance of aggregates of a cerrado phase, clayey texture, Dark-Red Latosol (Oxisol) to simulated raindrop impact as well as the geometrical average diameter of aggregates of this soil under different green manure-corn succession systems and under native cerrado. The tested green manure species were Crotalaria juncea, Cajanus cajan, Mucuna aterrima, Brachiaria ruziziensis and Canavalia ensiformis, cultivated in rotation with corn (cv. Pioneer 3072), during two years. The native cerrado presented larger and more stable aggregates, and it was necessary higher kinectic energy for disrupting them. In the green manure systems, brachiaria showed higher aggregation action than the leguminous species. The simulated raindrop impact method presented good performance, leading to better distinction among the treatments in relation to the aggregates stability method.Os Latossolos do cerrado em seu estado natural caracterizam-se, em geral, pela elevada estabilidade estrutural causada principalmente pela atuação dos óxidos de alumínio e de ferro e matéria orgânica. Entretanto, na região dos Cerrados é bastante frequente a prática da queima dos restos culturais e do uso excessivo de grades no preparo do solo, especialmente a grade aradora, que pulveriza o solo com o consequente enfraquecimento e destruição da estrutura. Objetivou-se com este estudo avaliar a resistência de agregados de Latossolo Vermelho-Escuro, textura argilosa, fase cerrado, ao impacto de gotas de chuva simulada e o diâmetro médio geométrico dos agregados deste solo sob sistemas de sucessão de diferentes adubos verdes-milho e sob cerrado nativo. As espécies de adubos verdes testadas foram Crotalaria juncea, Cajanus cajan, Mucuna aterrima, Brachiaria ruziziensis e Canavalia ensiformis, cultivadas na entressafra do milho (cv. Pioneer 3072), durante dois anos. O cerrado nativo apresentou agregados maiores e mais estáveis, sendo necessária maior energia cinética para destruí-los. Nos sistemas de adubos verdes, a braquiária mostrou maior ação agregante que as leguminosas. O método do impacto de gotas de chuva simulada apresentou boa performance, proporcionando maior discriminação entre os tratamentos em relação ao método de estabilidade de agregados.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraLeandro Naves Silva, MarxBlancaneaux, PhilippeCuri, NiltonMaria de Lima, JoséJosé Granate de Sá e Melo Marques, JoãoMoreira de Carvalho, Armida1998-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/4818Pesquisa Agropecuaria Brasileira; v.33, n.1, jan. 1998; 97-103Pesquisa Agropecuária Brasileira; v.33, n.1, jan. 1998; 97-1031678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/4818/6937info:eu-repo/semantics/openAccess2014-11-10T19:06:46Zoai:ojs.seer.sct.embrapa.br:article/4818Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-11-10T19:06:46Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Aggregates stability and resistance in Dark-Red Latosol (Oxisol) under corn-green manure succession Estabilidade e resistência de agregados de Latossolo Vermelho-Escuro cultivado com sucessão milho-adubo verde |
title |
Aggregates stability and resistance in Dark-Red Latosol (Oxisol) under corn-green manure succession |
spellingShingle |
Aggregates stability and resistance in Dark-Red Latosol (Oxisol) under corn-green manure succession Leandro Naves Silva, Marx cerrado vegetation; organic matter; aggregation; kinectic energy; green manure cerrado; matéria orgânica; agregação; energia cinética; adubo verde |
title_short |
Aggregates stability and resistance in Dark-Red Latosol (Oxisol) under corn-green manure succession |
title_full |
Aggregates stability and resistance in Dark-Red Latosol (Oxisol) under corn-green manure succession |
title_fullStr |
Aggregates stability and resistance in Dark-Red Latosol (Oxisol) under corn-green manure succession |
title_full_unstemmed |
Aggregates stability and resistance in Dark-Red Latosol (Oxisol) under corn-green manure succession |
title_sort |
Aggregates stability and resistance in Dark-Red Latosol (Oxisol) under corn-green manure succession |
author |
Leandro Naves Silva, Marx |
author_facet |
Leandro Naves Silva, Marx Blancaneaux, Philippe Curi, Nilton Maria de Lima, José José Granate de Sá e Melo Marques, João Moreira de Carvalho, Armida |
author_role |
author |
author2 |
Blancaneaux, Philippe Curi, Nilton Maria de Lima, José José Granate de Sá e Melo Marques, João Moreira de Carvalho, Armida |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Leandro Naves Silva, Marx Blancaneaux, Philippe Curi, Nilton Maria de Lima, José José Granate de Sá e Melo Marques, João Moreira de Carvalho, Armida |
dc.subject.por.fl_str_mv |
cerrado vegetation; organic matter; aggregation; kinectic energy; green manure cerrado; matéria orgânica; agregação; energia cinética; adubo verde |
topic |
cerrado vegetation; organic matter; aggregation; kinectic energy; green manure cerrado; matéria orgânica; agregação; energia cinética; adubo verde |
description |
Latosols (oxisols) under cerrado vegetation in their natural condition present, in general, high structural stability due mainly to the performance of aluminum and iron oxides and organic matter. In the Cerrado region, however, the practice of burning cultural residues and the excessive use of harrow during soil preparation is very common, mainly the plowing harrow, which pulverizes the soil with consequent weakness and destruction of soil structure. This study aimed to evaluate the resistance of aggregates of a cerrado phase, clayey texture, Dark-Red Latosol (Oxisol) to simulated raindrop impact as well as the geometrical average diameter of aggregates of this soil under different green manure-corn succession systems and under native cerrado. The tested green manure species were Crotalaria juncea, Cajanus cajan, Mucuna aterrima, Brachiaria ruziziensis and Canavalia ensiformis, cultivated in rotation with corn (cv. Pioneer 3072), during two years. The native cerrado presented larger and more stable aggregates, and it was necessary higher kinectic energy for disrupting them. In the green manure systems, brachiaria showed higher aggregation action than the leguminous species. The simulated raindrop impact method presented good performance, leading to better distinction among the treatments in relation to the aggregates stability method. |
publishDate |
1998 |
dc.date.none.fl_str_mv |
1998-01-01 |
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/4818 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/4818 |
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/4818/6937 |
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.33, n.1, jan. 1998; 97-103 Pesquisa Agropecuária Brasileira; v.33, n.1, jan. 1998; 97-103 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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