Litter decomposition and nutrient release from Brachiaria, Sorghum and soybean in no-tillage areas in the Cerrado region, Goiás

Detalhes bibliográficos
Autor(a) principal: Rossi, Celeste Queiroz
Data de Publicação: 2013
Outros Autores: Pereira, Marcos Gervasio, Giácomo, Simone Guimarães, Betta, Marconi, Polidoro, José Carlos
Tipo de documento: Artigo
Idioma: por
Título da fonte: Semina. Ciências Agrárias (Online)
Texto Completo: https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/10610
Resumo: The evaluation of plant litter decomposition added to the soil by cover crops provides a better understanding of nutrient supply to crops of commercial interest. The objective of this study was to evaluate the decomposition rate and dynamics of release of N, P and K in crop residues from crop of soybeans grown in Oxisol under no tillage. The residues used were Congo grass (Brachiaria ruziziensis) and sorghum (Sorghum bicolor L. Moench). The average production of Congo grass biomass + soybean was 6.1 Mg ha-1 and soybean + sorghum was 3.8 Mg ha-1. The dry matter decomposition and nutrient release were monitored at 15, 30, 60, 90, 120 days using bags containing residues deposited on the soil surface. A mathematical model was used to describe the litter decomposition and N, P, K release and the decomposition constant (k) and half-life (T1/2) were calculated. The values of T1/2 for dry matter were 154 and 258 days for Brachiaria + soybean and soybean + sorghum, respectively, in the dry season and 99 and 119 days in the rainy season. The nutrient with the lowest T1/2 was P, followed by K and N in both litters and evaluated at different times.
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spelling Litter decomposition and nutrient release from Brachiaria, Sorghum and soybean in no-tillage areas in the Cerrado region, GoiásDecomposição e liberação de nutrientes da palhada de braquiária, sorgo e soja em áreas de plantio direto no cerrado goianoCrop residuesBrazilian SavanaHalf-life.Resíduos culturaisCerradoTempo de meia vida.Ciência do SoloThe evaluation of plant litter decomposition added to the soil by cover crops provides a better understanding of nutrient supply to crops of commercial interest. The objective of this study was to evaluate the decomposition rate and dynamics of release of N, P and K in crop residues from crop of soybeans grown in Oxisol under no tillage. The residues used were Congo grass (Brachiaria ruziziensis) and sorghum (Sorghum bicolor L. Moench). The average production of Congo grass biomass + soybean was 6.1 Mg ha-1 and soybean + sorghum was 3.8 Mg ha-1. The dry matter decomposition and nutrient release were monitored at 15, 30, 60, 90, 120 days using bags containing residues deposited on the soil surface. A mathematical model was used to describe the litter decomposition and N, P, K release and the decomposition constant (k) and half-life (T1/2) were calculated. The values of T1/2 for dry matter were 154 and 258 days for Brachiaria + soybean and soybean + sorghum, respectively, in the dry season and 99 and 119 days in the rainy season. The nutrient with the lowest T1/2 was P, followed by K and N in both litters and evaluated at different times.A avaliação da decomposição dos resíduos vegetais adicionados ao solo pelas plantas de cobertura permite uma melhor compreensão do fornecimento de nutrientes para as culturas de interesse comercial. O objetivo do trabalho foi avaliar as taxas de decomposição e a dinâmica da liberação de N, P e K de resíduos culturais na entressafra da soja cultivada em Latossolo Vermelho, sob plantio direto. Os resíduos utilizados foram braquiária (Brachiaria ruziziensis R. Germ. & Evrard) e o sorgo (Sorghum bicolor L. Moench). A produção média de biomassa seca de braquiária + soja foi de 6,1 Mg ha-1 e do sorgo + soja foi de 3,8 Mg ha-1 . A decomposição da matéria seca e a liberação de nutrientes foram monitoradas aos 15, 30, 60, 90, 120 dias por meio de sacolas contendo resíduos culturais depositados na superfície do solo. Utilizou-se um modelo matemático exponencial negativo simples para descrever a decomposição dos resíduos e a liberação de N, P, K, sendo calculados a constante de decomposição (k) e o tempo de meia-vida (T1/2). Os valores de T1/2 da matéria seca foram de 154 e 258 dias para braquiária + soja e sorgo + soja, respectivamente, no período seco e de 99 e 119 dias no período chuvoso. O nutriente que apresentou o menor T1/2 foi o P, seguido por K e N nos dois resíduos avaliados e nas diferentes épocas.UEL2013-08-30info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionenPesquisa Empírica de Campoapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/1061010.5433/1679-0359.2013v34n4p1523Semina: Ciências Agrárias; Vol. 34 No. 4 (2013); 1523-1534Semina: Ciências Agrárias; v. 34 n. 4 (2013); 1523-15341679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELporhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/10610/pdf_1Copyright (c) 2013 Semina: Ciências Agráriashttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessRossi, Celeste QueirozPereira, Marcos GervasioGiácomo, Simone GuimarãesBetta, MarconiPolidoro, José Carlos2023-01-16T16:23:41Zoai:ojs.pkp.sfu.ca:article/10610Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2023-01-16T16:23:41Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false
dc.title.none.fl_str_mv Litter decomposition and nutrient release from Brachiaria, Sorghum and soybean in no-tillage areas in the Cerrado region, Goiás
Decomposição e liberação de nutrientes da palhada de braquiária, sorgo e soja em áreas de plantio direto no cerrado goiano
title Litter decomposition and nutrient release from Brachiaria, Sorghum and soybean in no-tillage areas in the Cerrado region, Goiás
spellingShingle Litter decomposition and nutrient release from Brachiaria, Sorghum and soybean in no-tillage areas in the Cerrado region, Goiás
Rossi, Celeste Queiroz
Crop residues
Brazilian Savana
Half-life.
Resíduos culturais
Cerrado
Tempo de meia vida.
Ciência do Solo
title_short Litter decomposition and nutrient release from Brachiaria, Sorghum and soybean in no-tillage areas in the Cerrado region, Goiás
title_full Litter decomposition and nutrient release from Brachiaria, Sorghum and soybean in no-tillage areas in the Cerrado region, Goiás
title_fullStr Litter decomposition and nutrient release from Brachiaria, Sorghum and soybean in no-tillage areas in the Cerrado region, Goiás
title_full_unstemmed Litter decomposition and nutrient release from Brachiaria, Sorghum and soybean in no-tillage areas in the Cerrado region, Goiás
title_sort Litter decomposition and nutrient release from Brachiaria, Sorghum and soybean in no-tillage areas in the Cerrado region, Goiás
author Rossi, Celeste Queiroz
author_facet Rossi, Celeste Queiroz
Pereira, Marcos Gervasio
Giácomo, Simone Guimarães
Betta, Marconi
Polidoro, José Carlos
author_role author
author2 Pereira, Marcos Gervasio
Giácomo, Simone Guimarães
Betta, Marconi
Polidoro, José Carlos
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Rossi, Celeste Queiroz
Pereira, Marcos Gervasio
Giácomo, Simone Guimarães
Betta, Marconi
Polidoro, José Carlos
dc.subject.por.fl_str_mv Crop residues
Brazilian Savana
Half-life.
Resíduos culturais
Cerrado
Tempo de meia vida.
Ciência do Solo
topic Crop residues
Brazilian Savana
Half-life.
Resíduos culturais
Cerrado
Tempo de meia vida.
Ciência do Solo
description The evaluation of plant litter decomposition added to the soil by cover crops provides a better understanding of nutrient supply to crops of commercial interest. The objective of this study was to evaluate the decomposition rate and dynamics of release of N, P and K in crop residues from crop of soybeans grown in Oxisol under no tillage. The residues used were Congo grass (Brachiaria ruziziensis) and sorghum (Sorghum bicolor L. Moench). The average production of Congo grass biomass + soybean was 6.1 Mg ha-1 and soybean + sorghum was 3.8 Mg ha-1. The dry matter decomposition and nutrient release were monitored at 15, 30, 60, 90, 120 days using bags containing residues deposited on the soil surface. A mathematical model was used to describe the litter decomposition and N, P, K release and the decomposition constant (k) and half-life (T1/2) were calculated. The values of T1/2 for dry matter were 154 and 258 days for Brachiaria + soybean and soybean + sorghum, respectively, in the dry season and 99 and 119 days in the rainy season. The nutrient with the lowest T1/2 was P, followed by K and N in both litters and evaluated at different times.
publishDate 2013
dc.date.none.fl_str_mv 2013-08-30
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
en
Pesquisa Empírica de Campo
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/10610
10.5433/1679-0359.2013v34n4p1523
url https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/10610
identifier_str_mv 10.5433/1679-0359.2013v34n4p1523
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/10610/pdf_1
dc.rights.driver.fl_str_mv Copyright (c) 2013 Semina: Ciências Agrárias
http://creativecommons.org/licenses/by-nc/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2013 Semina: Ciências Agrárias
http://creativecommons.org/licenses/by-nc/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv UEL
publisher.none.fl_str_mv UEL
dc.source.none.fl_str_mv Semina: Ciências Agrárias; Vol. 34 No. 4 (2013); 1523-1534
Semina: Ciências Agrárias; v. 34 n. 4 (2013); 1523-1534
1679-0359
1676-546X
reponame:Semina. Ciências Agrárias (Online)
instname:Universidade Estadual de Londrina (UEL)
instacron:UEL
instname_str Universidade Estadual de Londrina (UEL)
instacron_str UEL
institution UEL
reponame_str Semina. Ciências Agrárias (Online)
collection Semina. Ciências Agrárias (Online)
repository.name.fl_str_mv Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)
repository.mail.fl_str_mv semina.agrarias@uel.br
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