Production, decomposition and nutrient cycling in residues of sunnhemp and pearl millet in monocropped and intercropped systems

Detalhes bibliográficos
Autor(a) principal: Soratto, Rogério Peres
Data de Publicação: 2012
Outros Autores: Crusciol, Carlos Alexandre Costa, Costa, Claudio Hideo Martins da, Ferrari Neto, Jayme, Castro, Gustavo Spadotti Amaral
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/12431
Resumo: The objective of this work was to evaluate the biomass production and the rates of decomposition and macronutrient and silicon release on crop residues of sunnhemp (Crotalaria juncea) and pearl millet (Pennisetum glaucum), in monocropped and intercropped systems. A randomized complete block design was used, with four replicates in a factorial arrangement consisting of three cover crops – pearl millet, sunnhemp, and these species intercropped – and six sampling times – 0, 18, 32, 46, 74, and 91 days after management (DAM). Pearl millet produces a greater amount of dry matter and accumulates more N, P, K, Mg, S, C, and Si, whereas sunnhemp accumulates more Ca. Pearl millet phytomass has the highest rates of decomposition and nutrient release. These rates are higher between 0 and 18 DAM. Over the time, the C/N, C/P and C/S ratios increase, and the C/Si ratio, as well as the decomposition rate, decreases. Potassium is the most rapidly released nutrient, and silicon has the lowest release rate.
id EMBRAPA-4_63ef88c9bfee73158a50bbfd5d2a1c6a
oai_identifier_str oai:ojs.seer.sct.embrapa.br:article/12431
network_acronym_str EMBRAPA-4
network_name_str Pesquisa Agropecuária Brasileira (Online)
repository_id_str
spelling Production, decomposition and nutrient cycling in residues of sunnhemp and pearl millet in monocropped and intercropped systemsPersistência de palhada e liberação de nutrientes da crotalária e milheto solteiros e consorciadosCrotalaria juncea; Pennisetum glaucum; phytoliths; half‑life; C/N ratio; decomposition rateCrotalaria juncea; Pennisetum glaucum; fitólitos; meia‑vida; relação C/N; taxa de decomposiçãoThe objective of this work was to evaluate the biomass production and the rates of decomposition and macronutrient and silicon release on crop residues of sunnhemp (Crotalaria juncea) and pearl millet (Pennisetum glaucum), in monocropped and intercropped systems. A randomized complete block design was used, with four replicates in a factorial arrangement consisting of three cover crops – pearl millet, sunnhemp, and these species intercropped – and six sampling times – 0, 18, 32, 46, 74, and 91 days after management (DAM). Pearl millet produces a greater amount of dry matter and accumulates more N, P, K, Mg, S, C, and Si, whereas sunnhemp accumulates more Ca. Pearl millet phytomass has the highest rates of decomposition and nutrient release. These rates are higher between 0 and 18 DAM. Over the time, the C/N, C/P and C/S ratios increase, and the C/Si ratio, as well as the decomposition rate, decreases. Potassium is the most rapidly released nutrient, and silicon has the lowest release rate.O objetivo deste trabalho foi avaliar a produção de fitomassa e as taxas de decomposição e liberação de macronutrientes e de silício, nos resíduos vegetais de crotalária (Crotalaria juncea) e milheto (Pennisetum glaucum), em cultivo solteiro e consorciado. Utilizou-se o delineamento em blocos ao acaso, com quatro repetições, em arranjo fatorial constituído por três tipos de cobertura vegetal – milheto, crotalária e consórcio entre as espécies – e seis épocas de coleta – 0, 18, 32, 46, 74 e 91 dias após o manejo (DAM). O milheto apresenta maior produção de matéria seca e acumula mais N, P, K, Mg, S, C e Si, enquanto a crotalária acumula maior quantidade de Ca. A fitomassa do milheto apresenta as maiores taxas de decomposição e de liberação de nutrientes. Essas taxas são mais intensas entre 0 e 18 DAM. Com o transcorrer do tempo, as relações C/N, C/P e C/S aumentam e a relação C/Si, bem como a taxa de decomposição da fitomassa, diminui. O potássio é o nutriente de liberação mais rápida, e o silício apresenta a menor taxa de liberação.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraFAPESPCNPqSoratto, Rogério PeresCrusciol, Carlos Alexandre CostaCosta, Claudio Hideo Martins daFerrari Neto, JaymeCastro, Gustavo Spadotti Amaral2012-11-29info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/12431Pesquisa Agropecuaria Brasileira; v.47, n.10, out. 2012; 1462-1470Pesquisa Agropecuária Brasileira; v.47, n.10, out. 2012; 1462-14701678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/12431/8107https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/12431/8106info:eu-repo/semantics/openAccess2012-11-29T20:06:18Zoai:ojs.seer.sct.embrapa.br:article/12431Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2012-11-29T20:06:18Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Production, decomposition and nutrient cycling in residues of sunnhemp and pearl millet in monocropped and intercropped systems
Persistência de palhada e liberação de nutrientes da crotalária e milheto solteiros e consorciados
title Production, decomposition and nutrient cycling in residues of sunnhemp and pearl millet in monocropped and intercropped systems
spellingShingle Production, decomposition and nutrient cycling in residues of sunnhemp and pearl millet in monocropped and intercropped systems
Soratto, Rogério Peres
Crotalaria juncea; Pennisetum glaucum; phytoliths; half‑life; C/N ratio; decomposition rate
Crotalaria juncea; Pennisetum glaucum; fitólitos; meia‑vida; relação C/N; taxa de decomposição
title_short Production, decomposition and nutrient cycling in residues of sunnhemp and pearl millet in monocropped and intercropped systems
title_full Production, decomposition and nutrient cycling in residues of sunnhemp and pearl millet in monocropped and intercropped systems
title_fullStr Production, decomposition and nutrient cycling in residues of sunnhemp and pearl millet in monocropped and intercropped systems
title_full_unstemmed Production, decomposition and nutrient cycling in residues of sunnhemp and pearl millet in monocropped and intercropped systems
title_sort Production, decomposition and nutrient cycling in residues of sunnhemp and pearl millet in monocropped and intercropped systems
author Soratto, Rogério Peres
author_facet Soratto, Rogério Peres
Crusciol, Carlos Alexandre Costa
Costa, Claudio Hideo Martins da
Ferrari Neto, Jayme
Castro, Gustavo Spadotti Amaral
author_role author
author2 Crusciol, Carlos Alexandre Costa
Costa, Claudio Hideo Martins da
Ferrari Neto, Jayme
Castro, Gustavo Spadotti Amaral
author2_role author
author
author
author
dc.contributor.none.fl_str_mv
FAPESP
CNPq
dc.contributor.author.fl_str_mv Soratto, Rogério Peres
Crusciol, Carlos Alexandre Costa
Costa, Claudio Hideo Martins da
Ferrari Neto, Jayme
Castro, Gustavo Spadotti Amaral
dc.subject.por.fl_str_mv Crotalaria juncea; Pennisetum glaucum; phytoliths; half‑life; C/N ratio; decomposition rate
Crotalaria juncea; Pennisetum glaucum; fitólitos; meia‑vida; relação C/N; taxa de decomposição
topic Crotalaria juncea; Pennisetum glaucum; phytoliths; half‑life; C/N ratio; decomposition rate
Crotalaria juncea; Pennisetum glaucum; fitólitos; meia‑vida; relação C/N; taxa de decomposição
description The objective of this work was to evaluate the biomass production and the rates of decomposition and macronutrient and silicon release on crop residues of sunnhemp (Crotalaria juncea) and pearl millet (Pennisetum glaucum), in monocropped and intercropped systems. A randomized complete block design was used, with four replicates in a factorial arrangement consisting of three cover crops – pearl millet, sunnhemp, and these species intercropped – and six sampling times – 0, 18, 32, 46, 74, and 91 days after management (DAM). Pearl millet produces a greater amount of dry matter and accumulates more N, P, K, Mg, S, C, and Si, whereas sunnhemp accumulates more Ca. Pearl millet phytomass has the highest rates of decomposition and nutrient release. These rates are higher between 0 and 18 DAM. Over the time, the C/N, C/P and C/S ratios increase, and the C/Si ratio, as well as the decomposition rate, decreases. Potassium is the most rapidly released nutrient, and silicon has the lowest release rate.
publishDate 2012
dc.date.none.fl_str_mv 2012-11-29
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/12431
url https://seer.sct.embrapa.br/index.php/pab/article/view/12431
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/12431/8107
https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/12431/8106
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.47, n.10, out. 2012; 1462-1470
Pesquisa Agropecuária Brasileira; v.47, n.10, out. 2012; 1462-1470
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_ 1793416692343242752

Registros relacionados