Dry matter decomposition of cover crops in no-tillage cotton system.
Autor(a) principal: | |
---|---|
Data de Publicação: | 2018 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
Texto Completo: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1099704 |
Resumo: | No-tillage cotton systems require soil coverage with cover crop residue for a longer time due to the late cycle of cotton. However, decomposition rates may vary between cover crops, and the adjustment of models to describe it is critical to no-tillage cotton management. Two non-linear regression models, exponential (EM) and Michaelis-Menten (MM), were adjusted to dry matter decomposition of cover crops in a cotton no-tillage system, in Brazil. Three field trials were performed in 2012 for the cover crops Urochloa ruziziensis (brachiaria), Pennisetum glaucum (pearl millet), and Cajanus cajan (pigeon pea). Samples of cover crop were collected at 20, 50, 70, 110, 140, and 170 days after sowing upland cotton to measure dry matter decomposition. MM showed better adjustment than EM for all cover crops. The estimations of half-life parameters were different between the cover crops, suggesting that each cover crop has its own rate of decomposition. For pearl millet, brachiaria, and pigeon pea, the half-life estimation by exponential model was over the MM in 9, 12, and 12 days. |
id |
EMBR_fd1efcf87cd4e403b09d77b9987c6144 |
---|---|
oai_identifier_str |
oai:www.alice.cnptia.embrapa.br:doc/1099704 |
network_acronym_str |
EMBR |
network_name_str |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
repository_id_str |
2154 |
spelling |
Dry matter decomposition of cover crops in no-tillage cotton system.AlgodãoGossypium HirsutumPlantio DiretoBrachiariaGuanduCajanus CajanCottonNo-tillageUrochloa ruziziensisPigeon peasNo-tillage cotton systems require soil coverage with cover crop residue for a longer time due to the late cycle of cotton. However, decomposition rates may vary between cover crops, and the adjustment of models to describe it is critical to no-tillage cotton management. Two non-linear regression models, exponential (EM) and Michaelis-Menten (MM), were adjusted to dry matter decomposition of cover crops in a cotton no-tillage system, in Brazil. Three field trials were performed in 2012 for the cover crops Urochloa ruziziensis (brachiaria), Pennisetum glaucum (pearl millet), and Cajanus cajan (pigeon pea). Samples of cover crop were collected at 20, 50, 70, 110, 140, and 170 days after sowing upland cotton to measure dry matter decomposition. MM showed better adjustment than EM for all cover crops. The estimations of half-life parameters were different between the cover crops, suggesting that each cover crop has its own rate of decomposition. For pearl millet, brachiaria, and pigeon pea, the half-life estimation by exponential model was over the MM in 9, 12, and 12 days.JOAO LUIS DA SILVA FILHO, CNPA; ANA LUIZA DIAS COELHO BORIN, CNPA; ALEXANDRE CUNHA DE B FERREIRA, CNPA.SILVA FILHO, J. L. daBORIN, A. L. D. C.FERREIRA, A. C. de B.2018-11-24T23:34:37Z2018-11-24T23:34:37Z2018-11-2020182018-11-24T23:34:37Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleRevista Caatinga, v. 31, n. 2, p. 264-270, abr./jun. 2018.0100-316Xhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1099704enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2018-11-24T23:34:42Zoai:www.alice.cnptia.embrapa.br:doc/1099704Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542018-11-24T23:34:42falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542018-11-24T23:34:42Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Dry matter decomposition of cover crops in no-tillage cotton system. |
title |
Dry matter decomposition of cover crops in no-tillage cotton system. |
spellingShingle |
Dry matter decomposition of cover crops in no-tillage cotton system. SILVA FILHO, J. L. da Algodão Gossypium Hirsutum Plantio Direto Brachiaria Guandu Cajanus Cajan Cotton No-tillage Urochloa ruziziensis Pigeon peas |
title_short |
Dry matter decomposition of cover crops in no-tillage cotton system. |
title_full |
Dry matter decomposition of cover crops in no-tillage cotton system. |
title_fullStr |
Dry matter decomposition of cover crops in no-tillage cotton system. |
title_full_unstemmed |
Dry matter decomposition of cover crops in no-tillage cotton system. |
title_sort |
Dry matter decomposition of cover crops in no-tillage cotton system. |
author |
SILVA FILHO, J. L. da |
author_facet |
SILVA FILHO, J. L. da BORIN, A. L. D. C. FERREIRA, A. C. de B. |
author_role |
author |
author2 |
BORIN, A. L. D. C. FERREIRA, A. C. de B. |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
JOAO LUIS DA SILVA FILHO, CNPA; ANA LUIZA DIAS COELHO BORIN, CNPA; ALEXANDRE CUNHA DE B FERREIRA, CNPA. |
dc.contributor.author.fl_str_mv |
SILVA FILHO, J. L. da BORIN, A. L. D. C. FERREIRA, A. C. de B. |
dc.subject.por.fl_str_mv |
Algodão Gossypium Hirsutum Plantio Direto Brachiaria Guandu Cajanus Cajan Cotton No-tillage Urochloa ruziziensis Pigeon peas |
topic |
Algodão Gossypium Hirsutum Plantio Direto Brachiaria Guandu Cajanus Cajan Cotton No-tillage Urochloa ruziziensis Pigeon peas |
description |
No-tillage cotton systems require soil coverage with cover crop residue for a longer time due to the late cycle of cotton. However, decomposition rates may vary between cover crops, and the adjustment of models to describe it is critical to no-tillage cotton management. Two non-linear regression models, exponential (EM) and Michaelis-Menten (MM), were adjusted to dry matter decomposition of cover crops in a cotton no-tillage system, in Brazil. Three field trials were performed in 2012 for the cover crops Urochloa ruziziensis (brachiaria), Pennisetum glaucum (pearl millet), and Cajanus cajan (pigeon pea). Samples of cover crop were collected at 20, 50, 70, 110, 140, and 170 days after sowing upland cotton to measure dry matter decomposition. MM showed better adjustment than EM for all cover crops. The estimations of half-life parameters were different between the cover crops, suggesting that each cover crop has its own rate of decomposition. For pearl millet, brachiaria, and pigeon pea, the half-life estimation by exponential model was over the MM in 9, 12, and 12 days. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-11-24T23:34:37Z 2018-11-24T23:34:37Z 2018-11-20 2018 2018-11-24T23:34:37Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Revista Caatinga, v. 31, n. 2, p. 264-270, abr./jun. 2018. 0100-316X http://www.alice.cnptia.embrapa.br/alice/handle/doc/1099704 |
identifier_str_mv |
Revista Caatinga, v. 31, n. 2, p. 264-270, abr./jun. 2018. 0100-316X |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1099704 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
collection |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
repository.name.fl_str_mv |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
cg-riaa@embrapa.br |
_version_ |
1794503465610772480 |