Microbial biomass nitrogen in soil cultivated with soybean, under different management systems, in the Cerrado

Detalhes bibliográficos
Autor(a) principal: Perez, Kátia Sueli Sivek
Data de Publicação: 2005
Outros Autores: Ramos, Maria Lucrecia Gerosa, McManus, Concepta
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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spelling 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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