Microbial biomass nitrogen in soil cultivated with soybean, under different management systems, in the Cerrado
Autor(a) principal: | |
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Data de Publicação: | 2005 |
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/6934 |
Resumo: | The aim of this work was to quantify soil nitrogen microbial biomassa (SNMB) under different soil management systems: no-tillage (NT); one harrowing (OH); one subsoiling with two harrowings (SH). These systems were compared with native Cerrado, on a Red Yellow Latossol clay, in Federal District. Soils were studied at five depths, 0–5, 5–10, 10–20, 20–30 and 30–40 cm, over four periods: before soil preparation; 30 days after germination (DAG); flowering stage and after harvesting soybean plants. The native Cerrado showed the highest values of SNMB in all periods and management systems. Significant differences were found between 0–5, 5–10 and 10–20 cm soil layers, except at 30 DAG. The Nmic:Ntotal percentual ratio in cerrado soil was 2.5 times greater than OH system, three times greater than NT and five times greater than SH. The distribution of total N decreased in the Cerrado soil and other management systems with soil depth. Total N levels decreased with soil depth in all periods. There was a positive correlation between nutrients and microbial nitrogen in different management systems and soils under native cerrado vegetation. |
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Microbial biomass nitrogen in soil cultivated with soybean, under different management systems, in the CerradoNitrogênio da biomassa microbiana em solo cultivado com soja, sob diferentes sistemas de manejo, nos CerradosGlycine max; harrowing; no-tillage; subsoilingGlycine max; gradagem; plantio direto; subsolagemThe aim of this work was to quantify soil nitrogen microbial biomassa (SNMB) under different soil management systems: no-tillage (NT); one harrowing (OH); one subsoiling with two harrowings (SH). These systems were compared with native Cerrado, on a Red Yellow Latossol clay, in Federal District. Soils were studied at five depths, 0–5, 5–10, 10–20, 20–30 and 30–40 cm, over four periods: before soil preparation; 30 days after germination (DAG); flowering stage and after harvesting soybean plants. The native Cerrado showed the highest values of SNMB in all periods and management systems. Significant differences were found between 0–5, 5–10 and 10–20 cm soil layers, except at 30 DAG. The Nmic:Ntotal percentual ratio in cerrado soil was 2.5 times greater than OH system, three times greater than NT and five times greater than SH. The distribution of total N decreased in the Cerrado soil and other management systems with soil depth. Total N levels decreased with soil depth in all periods. There was a positive correlation between nutrients and microbial nitrogen in different management systems and soils under native cerrado vegetation.O objetivo deste trabalho foi quantificar o nitrogênio da biomassa microbiana do solo (NBMS), em diferentes manejos: semeadura direta (SD), uma gradagem (GR), subsolagem e duas gradagens (SG), comparado com solo sob cerrado nativo, em um Latossolo Vermelho-Amarelo argiloso, no Distrito Federal. Avaliaram-se os solos em cinco profundidades, 0–5, 5–10, 10–20, 20–30 e 30–40 cm; e em quatro épocas: antes do preparo do solo, 30 dias após a germinação (30 DAG), floração e após colheita da soja. O nitrogênio da biomassa microbiana em solo não perturbado, apresentou maiores valores em todas as épocas estudadas comparadas com os solos em diferentes manejos. Houve diferença significativa nas camadas 0–5, 5–10 e 10–20 cm, exceto aos 30 dias após a germinação. A razão porcentual no Cerrado Nmic:Ntotal foi 2,5 vezes maior que a GR, três vezes maior que a SD e cinco vezes maior que a SG. A distribuição do Ntotal foi decrescente no solo de Cerrado e nos manejos ao longo do perfil. Os teores de Ntotal reduziram-se de acordo com a profundidade em todas as épocas avaliadas. Houve correlação positiva entre os nutrientes e o nitrogênio microbiano nos diferentes manejos e solo de cerrado sob vegetação nativa.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraPerez, Kátia Sueli SivekRamos, Maria Lucrecia GerosaMcManus, Concepta2005-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/6934Pesquisa Agropecuaria Brasileira; v.40, n.2, fev. 2005; 137-144Pesquisa Agropecuária Brasileira; v.40, n.2, fev. 2005; 137-1441678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/6934/3982info:eu-repo/semantics/openAccess2014-09-22T19:23:33Zoai:ojs.seer.sct.embrapa.br:article/6934Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-09-22T19:23:33Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Microbial biomass nitrogen in soil cultivated with soybean, under different management systems, in the Cerrado Nitrogênio da biomassa microbiana em solo cultivado com soja, sob diferentes sistemas de manejo, nos Cerrados |
title |
Microbial biomass nitrogen in soil cultivated with soybean, under different management systems, in the Cerrado |
spellingShingle |
Microbial biomass nitrogen in soil cultivated with soybean, under different management systems, in the Cerrado Perez, Kátia Sueli Sivek Glycine max; harrowing; no-tillage; subsoiling Glycine max; gradagem; plantio direto; subsolagem |
title_short |
Microbial biomass nitrogen in soil cultivated with soybean, under different management systems, in the Cerrado |
title_full |
Microbial biomass nitrogen in soil cultivated with soybean, under different management systems, in the Cerrado |
title_fullStr |
Microbial biomass nitrogen in soil cultivated with soybean, under different management systems, in the Cerrado |
title_full_unstemmed |
Microbial biomass nitrogen in soil cultivated with soybean, under different management systems, in the Cerrado |
title_sort |
Microbial biomass nitrogen in soil cultivated with soybean, under different management systems, in the Cerrado |
author |
Perez, Kátia Sueli Sivek |
author_facet |
Perez, Kátia Sueli Sivek Ramos, Maria Lucrecia Gerosa McManus, Concepta |
author_role |
author |
author2 |
Ramos, Maria Lucrecia Gerosa McManus, Concepta |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Perez, Kátia Sueli Sivek Ramos, Maria Lucrecia Gerosa McManus, Concepta |
dc.subject.por.fl_str_mv |
Glycine max; harrowing; no-tillage; subsoiling Glycine max; gradagem; plantio direto; subsolagem |
topic |
Glycine max; harrowing; no-tillage; subsoiling Glycine max; gradagem; plantio direto; subsolagem |
description |
The aim of this work was to quantify soil nitrogen microbial biomassa (SNMB) under different soil management systems: no-tillage (NT); one harrowing (OH); one subsoiling with two harrowings (SH). These systems were compared with native Cerrado, on a Red Yellow Latossol clay, in Federal District. Soils were studied at five depths, 0–5, 5–10, 10–20, 20–30 and 30–40 cm, over four periods: before soil preparation; 30 days after germination (DAG); flowering stage and after harvesting soybean plants. The native Cerrado showed the highest values of SNMB in all periods and management systems. Significant differences were found between 0–5, 5–10 and 10–20 cm soil layers, except at 30 DAG. The Nmic:Ntotal percentual ratio in cerrado soil was 2.5 times greater than OH system, three times greater than NT and five times greater than SH. The distribution of total N decreased in the Cerrado soil and other management systems with soil depth. Total N levels decreased with soil depth in all periods. There was a positive correlation between nutrients and microbial nitrogen in different management systems and soils under native cerrado vegetation. |
publishDate |
2005 |
dc.date.none.fl_str_mv |
2005-02-01 |
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/6934 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/6934 |
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/6934/3982 |
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.40, n.2, fev. 2005; 137-144 Pesquisa Agropecuária Brasileira; v.40, n.2, fev. 2005; 137-144 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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1793416677713510400 |