Decomposition of mulching and release of nitrogen and phosphorus in a sand oat-soybean rotation under no-tillage
Autor(a) principal: | |
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Data de Publicação: | 1997 |
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/4761 |
Resumo: | This paper aimed to study the dynamics of corn (Zea mays) and sand oat (Avena strigosa L.) mulchings and of N and P release during a sand oat/soybean (Glycine max Merril) rotation under no-tillage. Weight loss and C, N and P content of corn and sand oat mulchings were periodically monitored during 370 days in a sand oat/soybean rotation under no-tillage, on an Oxisol, typic Haplustox soil at the Batavo Demonstration and Experiment Field in Carambeí, PR, Brazil. The corn mulching decomposed more slowly, loosing 49% of weight in 149 days, due to its higher C/N ratio (43:1), to a more heterogenous distribution and to the greater quantity of initial residue (9.8 vs. 6.8 t.ha-1). The sand oat mulching lost 71% of weight in 179 days. The average contents of C and of N in the corn mulching were 428 and 10 g.kg-1, respectively, and 415 and 17 g.kg-1 in sand oat mulching. The contents of P decreased in the period from 1.2 to 0.9 g.kg-1 in the corn and from 1.6 to 1.0 g.kg-1 in the sand oat. A mineralization of 48% of the C, 51% of the N and 77% of the P was estimated. In the sand oat mulching, 71% of the C, 75% of the N and 85% of the P were mineralized. The average carbon/phosphorus ratio of corn mulching was superior (470:1) to that of the sand oat (319:1). |
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Decomposition of mulching and release of nitrogen and phosphorus in a sand oat-soybean rotation under no-tillageDecomposição da palhada e liberação de nitrogênio e fósforo numa rotação aveia-soja sob plantio diretogreen manures; Avena strigosa; Zea mays; Glycine max; C/N ratio; C/P ratio; OxisolAvena strigosa; Zea mays; relação carbono/nitrogênio; relação carbono/fósforo; palhada de milho; palhada de aveia-preta; Latossolo Vermelho-EscuroThis paper aimed to study the dynamics of corn (Zea mays) and sand oat (Avena strigosa L.) mulchings and of N and P release during a sand oat/soybean (Glycine max Merril) rotation under no-tillage. Weight loss and C, N and P content of corn and sand oat mulchings were periodically monitored during 370 days in a sand oat/soybean rotation under no-tillage, on an Oxisol, typic Haplustox soil at the Batavo Demonstration and Experiment Field in Carambeí, PR, Brazil. The corn mulching decomposed more slowly, loosing 49% of weight in 149 days, due to its higher C/N ratio (43:1), to a more heterogenous distribution and to the greater quantity of initial residue (9.8 vs. 6.8 t.ha-1). The sand oat mulching lost 71% of weight in 179 days. The average contents of C and of N in the corn mulching were 428 and 10 g.kg-1, respectively, and 415 and 17 g.kg-1 in sand oat mulching. The contents of P decreased in the period from 1.2 to 0.9 g.kg-1 in the corn and from 1.6 to 1.0 g.kg-1 in the sand oat. A mineralization of 48% of the C, 51% of the N and 77% of the P was estimated. In the sand oat mulching, 71% of the C, 75% of the N and 85% of the P were mineralized. The average carbon/phosphorus ratio of corn mulching was superior (470:1) to that of the sand oat (319:1).O objetivo do trabalho foi estudar a dinâmica da decomposição da palhada e da liberação de N e P durante o ciclo das culturas da aveia-preta (Avena strigosa) e da soja (Glycine max) em rotação, sob plantio direto. Monitorou-se, periodicamente, durante 370 dias, a perda de peso e teores de C, N e P da palhada de milho e de aveia-preta, numa rotação aveia-soja, em plantio direto, em um Latossolo Vermelho-Escuro, no Campo Demonstrativo e Experimental Batavo em Carambeí, PR. A palhada de milho decompôs-se mais lentamente, perdendo 49% de peso em 149 dias, devido à sua mais alta relação C/N (43:1), à distribuição mais heterogênea e à maior quantidade de resíduo inicial (9,8 contra 6,8 t.ha-1). A palhada de aveia-preta perdeu 71% de peso em 179 dias. Os teores médios de C e de N da palhada do milho foram 428 e 10 g.kg-1, respectivamente e 415 e 17 g.kg-1 na palhada da aveia-preta. Os teores de P decresceram, no período, de 1,2 para 0,9 g.kg-1 no milho e de 1,6 para 1,0 g.kg-1 na aveia-preta. Na palhada do milho estimou-se uma mineralização de 48% do C, 51% do N e 77% do P. Na palhada da aveia-preta 71% do C, 75% do N e 85% do P foram mineralizados. A relação carbono/fósforo média da palhada do milho foi superior (470:1) à da aveia-preta (319:1).Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraWisniewski, CelinaHoltz, Guilherme Pimentel1997-11-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/4761Pesquisa Agropecuaria Brasileira; v.32, n.11, nov. 1997; 1191-1197Pesquisa Agropecuária Brasileira; v.32, n.11, nov. 1997; 1191-11971678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/4761/7274info:eu-repo/semantics/openAccess2015-04-20T17:05:47Zoai:ojs.seer.sct.embrapa.br:article/4761Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2015-04-20T17:05:47Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Decomposition of mulching and release of nitrogen and phosphorus in a sand oat-soybean rotation under no-tillage Decomposição da palhada e liberação de nitrogênio e fósforo numa rotação aveia-soja sob plantio direto |
title |
Decomposition of mulching and release of nitrogen and phosphorus in a sand oat-soybean rotation under no-tillage |
spellingShingle |
Decomposition of mulching and release of nitrogen and phosphorus in a sand oat-soybean rotation under no-tillage Wisniewski, Celina green manures; Avena strigosa; Zea mays; Glycine max; C/N ratio; C/P ratio; Oxisol Avena strigosa; Zea mays; relação carbono/nitrogênio; relação carbono/fósforo; palhada de milho; palhada de aveia-preta; Latossolo Vermelho-Escuro |
title_short |
Decomposition of mulching and release of nitrogen and phosphorus in a sand oat-soybean rotation under no-tillage |
title_full |
Decomposition of mulching and release of nitrogen and phosphorus in a sand oat-soybean rotation under no-tillage |
title_fullStr |
Decomposition of mulching and release of nitrogen and phosphorus in a sand oat-soybean rotation under no-tillage |
title_full_unstemmed |
Decomposition of mulching and release of nitrogen and phosphorus in a sand oat-soybean rotation under no-tillage |
title_sort |
Decomposition of mulching and release of nitrogen and phosphorus in a sand oat-soybean rotation under no-tillage |
author |
Wisniewski, Celina |
author_facet |
Wisniewski, Celina Holtz, Guilherme Pimentel |
author_role |
author |
author2 |
Holtz, Guilherme Pimentel |
author2_role |
author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Wisniewski, Celina Holtz, Guilherme Pimentel |
dc.subject.por.fl_str_mv |
green manures; Avena strigosa; Zea mays; Glycine max; C/N ratio; C/P ratio; Oxisol Avena strigosa; Zea mays; relação carbono/nitrogênio; relação carbono/fósforo; palhada de milho; palhada de aveia-preta; Latossolo Vermelho-Escuro |
topic |
green manures; Avena strigosa; Zea mays; Glycine max; C/N ratio; C/P ratio; Oxisol Avena strigosa; Zea mays; relação carbono/nitrogênio; relação carbono/fósforo; palhada de milho; palhada de aveia-preta; Latossolo Vermelho-Escuro |
description |
This paper aimed to study the dynamics of corn (Zea mays) and sand oat (Avena strigosa L.) mulchings and of N and P release during a sand oat/soybean (Glycine max Merril) rotation under no-tillage. Weight loss and C, N and P content of corn and sand oat mulchings were periodically monitored during 370 days in a sand oat/soybean rotation under no-tillage, on an Oxisol, typic Haplustox soil at the Batavo Demonstration and Experiment Field in Carambeí, PR, Brazil. The corn mulching decomposed more slowly, loosing 49% of weight in 149 days, due to its higher C/N ratio (43:1), to a more heterogenous distribution and to the greater quantity of initial residue (9.8 vs. 6.8 t.ha-1). The sand oat mulching lost 71% of weight in 179 days. The average contents of C and of N in the corn mulching were 428 and 10 g.kg-1, respectively, and 415 and 17 g.kg-1 in sand oat mulching. The contents of P decreased in the period from 1.2 to 0.9 g.kg-1 in the corn and from 1.6 to 1.0 g.kg-1 in the sand oat. A mineralization of 48% of the C, 51% of the N and 77% of the P was estimated. In the sand oat mulching, 71% of the C, 75% of the N and 85% of the P were mineralized. The average carbon/phosphorus ratio of corn mulching was superior (470:1) to that of the sand oat (319:1). |
publishDate |
1997 |
dc.date.none.fl_str_mv |
1997-11-01 |
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/4761 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/4761 |
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/4761/7274 |
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.11, nov. 1997; 1191-1197 Pesquisa Agropecuária Brasileira; v.32, n.11, nov. 1997; 1191-1197 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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1793416706880700416 |