Cover crops biomass production and its residues mineralization in a Brazilian no-till Oxisol

Detalhes bibliográficos
Autor(a) principal: Torres, José Luiz Rodrigues
Data de Publicação: 2008
Outros Autores: Pereira, Marcos Gervasio, Fabian, Adelar José
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/70
Resumo: The objective of this work was to evaluate dry biomass production, decomposition rate and macronutrients release (N, P, Ca, Mg and S) of cover crops cultural residues, in a no-till savanna soil. The cover crops tested were: pearl millet (Pennisetum americanum sin. typhoides), brachiaria grass (Brachiaria brizantha cv. Marandu), sorghum [Sorghum bicolor (L.) Moench], pigeon pea [Cajanus cajan (L.) Millsp.], sunn hemp (Crotalaria juncea L.) and black oat (Avena strigosa Schreb), compared to a fallow plot (control). The experiment was carried out in an Oxisol, medium texture. A randomized block design, in a split-plot array in time, with four replications, was used. Dry biomass production was evaluated 110 days after sowing. Decomposition rate was evaluated by litter bags containing cultural residues. Millet and sunn hemp are the cover crops (grass and legume) with the highest dry biomass production and N accumulation, in the two evaluation periods. The highest decomposition rate and nutrient release occurred at 42 days after desiccation. The highest values of half life were observed in dry period.
id EMBRAPA-4_82c1db64d22d201129a709ceb7cbba47
oai_identifier_str oai:ojs.seer.sct.embrapa.br:article/70
network_acronym_str EMBRAPA-4
network_name_str Pesquisa Agropecuária Brasileira (Online)
repository_id_str
spelling Cover crops biomass production and its residues mineralization in a Brazilian no-till OxisolProdução de fitomassa por plantas de cobertura e mineralização de seus resíduos em plantio diretoAvena strigosa; Cajanus cajan; Crotalaria juncea; Pennisetum americanum; half life; decomposition rotes.Avena strigosa; Cajanus cajan; Crotalaria juncea; Pennisetum americanum; meia-vida; taxa de decomposição.The objective of this work was to evaluate dry biomass production, decomposition rate and macronutrients release (N, P, Ca, Mg and S) of cover crops cultural residues, in a no-till savanna soil. The cover crops tested were: pearl millet (Pennisetum americanum sin. typhoides), brachiaria grass (Brachiaria brizantha cv. Marandu), sorghum [Sorghum bicolor (L.) Moench], pigeon pea [Cajanus cajan (L.) Millsp.], sunn hemp (Crotalaria juncea L.) and black oat (Avena strigosa Schreb), compared to a fallow plot (control). The experiment was carried out in an Oxisol, medium texture. A randomized block design, in a split-plot array in time, with four replications, was used. Dry biomass production was evaluated 110 days after sowing. Decomposition rate was evaluated by litter bags containing cultural residues. Millet and sunn hemp are the cover crops (grass and legume) with the highest dry biomass production and N accumulation, in the two evaluation periods. The highest decomposition rate and nutrient release occurred at 42 days after desiccation. The highest values of half life were observed in dry period.O objetivo deste trabalho foi avaliar a produção de fitomassa seca, a taxa de decomposição das palhadas e as quantidades de macronutrientes (N, P, Ca, Mg e S) liberadas dos resíduos vegetais de sete plantas de cobertura de solo, em condições de Cerrado, por dois anos. As plantas de cobertura avaliadas foram: milheto (Pennisetum americanum sin. typhoides), braquiária (Brachiaria brizantha cv. Marandu), sorgo forrageiro [Sorghum bicolor (L.) Moench], guandu [Cajanus cajan (L.) Millsp.], crotalária juncea (Crotalaria juncea L.), aveia-preta (Avena strigosa Schreb) e a vegetação espontânea de uma parcela em pousio. Utilizou-se o delineamento em blocos ao acaso, com quatro repetições, implantado em um Latossolo Vermelho, textura média. Avaliou-se a produção de fitomassa seca 110 dias após a semeadura. A taxa de decomposição foi quantificada por meio de sacolas de náilon contendo os resíduos culturais, coletadas em intervalos regulares. Observou-se que milheto e crotalária são as coberturas gramínea e leguminosa com maior produção de fitomassa seca e acúmulo de N, nos dois períodos avaliados. A maior taxa de decomposição das plantas de cobertura e de liberação de nutrientes ocorre aos 42 dias após a dessecação. Os maiores tempos de meia-vida foram observados no período de menor precipitação pluvial.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraFundação AgrisusTorres, José Luiz RodriguesPereira, Marcos GervasioFabian, Adelar José2008-10-20info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/70Pesquisa Agropecuaria Brasileira; v.43, n.3, mar. 2008; 421-428Pesquisa Agropecuária Brasileira; v.43, n.3, mar. 2008; 421-4281678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/70/6712info:eu-repo/semantics/openAccess2014-04-30T18:21:03Zoai:ojs.seer.sct.embrapa.br:article/70Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-30T18:21:03Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Cover crops biomass production and its residues mineralization in a Brazilian no-till Oxisol
Produção de fitomassa por plantas de cobertura e mineralização de seus resíduos em plantio direto
title Cover crops biomass production and its residues mineralization in a Brazilian no-till Oxisol
spellingShingle Cover crops biomass production and its residues mineralization in a Brazilian no-till Oxisol
Torres, José Luiz Rodrigues
Avena strigosa; Cajanus cajan; Crotalaria juncea; Pennisetum americanum; half life; decomposition rotes.
Avena strigosa; Cajanus cajan; Crotalaria juncea; Pennisetum americanum; meia-vida; taxa de decomposição.
title_short Cover crops biomass production and its residues mineralization in a Brazilian no-till Oxisol
title_full Cover crops biomass production and its residues mineralization in a Brazilian no-till Oxisol
title_fullStr Cover crops biomass production and its residues mineralization in a Brazilian no-till Oxisol
title_full_unstemmed Cover crops biomass production and its residues mineralization in a Brazilian no-till Oxisol
title_sort Cover crops biomass production and its residues mineralization in a Brazilian no-till Oxisol
author Torres, José Luiz Rodrigues
author_facet Torres, José Luiz Rodrigues
Pereira, Marcos Gervasio
Fabian, Adelar José
author_role author
author2 Pereira, Marcos Gervasio
Fabian, Adelar José
author2_role author
author
dc.contributor.none.fl_str_mv
Fundação Agrisus
dc.contributor.author.fl_str_mv Torres, José Luiz Rodrigues
Pereira, Marcos Gervasio
Fabian, Adelar José
dc.subject.por.fl_str_mv Avena strigosa; Cajanus cajan; Crotalaria juncea; Pennisetum americanum; half life; decomposition rotes.
Avena strigosa; Cajanus cajan; Crotalaria juncea; Pennisetum americanum; meia-vida; taxa de decomposição.
topic Avena strigosa; Cajanus cajan; Crotalaria juncea; Pennisetum americanum; half life; decomposition rotes.
Avena strigosa; Cajanus cajan; Crotalaria juncea; Pennisetum americanum; meia-vida; taxa de decomposição.
description The objective of this work was to evaluate dry biomass production, decomposition rate and macronutrients release (N, P, Ca, Mg and S) of cover crops cultural residues, in a no-till savanna soil. The cover crops tested were: pearl millet (Pennisetum americanum sin. typhoides), brachiaria grass (Brachiaria brizantha cv. Marandu), sorghum [Sorghum bicolor (L.) Moench], pigeon pea [Cajanus cajan (L.) Millsp.], sunn hemp (Crotalaria juncea L.) and black oat (Avena strigosa Schreb), compared to a fallow plot (control). The experiment was carried out in an Oxisol, medium texture. A randomized block design, in a split-plot array in time, with four replications, was used. Dry biomass production was evaluated 110 days after sowing. Decomposition rate was evaluated by litter bags containing cultural residues. Millet and sunn hemp are the cover crops (grass and legume) with the highest dry biomass production and N accumulation, in the two evaluation periods. The highest decomposition rate and nutrient release occurred at 42 days after desiccation. The highest values of half life were observed in dry period.
publishDate 2008
dc.date.none.fl_str_mv 2008-10-20
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/70
url https://seer.sct.embrapa.br/index.php/pab/article/view/70
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/70/6712
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.43, n.3, mar. 2008; 421-428
Pesquisa Agropecuária Brasileira; v.43, n.3, mar. 2008; 421-428
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
_version_ 1793416712086880256

Registros relacionados