Cover crops affecting levels of ammonium and nitrate in the soil and upland rice development

Detalhes bibliográficos
Autor(a) principal: Nascente, Adriano Stephan
Data de Publicação: 2013
Outros Autores: Costa Crusciol, Carlos Alexandre [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.5433/1679-0359.2013v34n5p2189
http://hdl.handle.net/11449/113294
Resumo: The use of cover crops in no-tillage systems (NTS) increases the levels of organic matter and could increase the nitrogen content of the soil, contributing to reduce fertilizers costs. The knowledge of these processes is fundamental for deciding whether cover crops can be effectively incorporated into the agricultural production system. The objective of this study was to evaluate the effect of cover crop species on the levels of nitrate and ammonium in the soil in early upland rice development, as well upland rice yield. A field experiment was performed and treatments consisted of growing rice on five cover crops (Panicum maximum, Brachiaria ruziziensis, Brachiaria brizantha, millet and fallow) in an NTS and two control treatments (Brachiaria brizantha and fallow) under a conventional tillage system, CTS, (one plowing and two disking). The experimental design was a complete randomized block with three replications. The soil samples were collected during a period of six weeks (0, 7, 14, 21, 28 and 35 days in relation to upland rice sowing). The cover crops Brachiaria brizantha, Panicum maximum and Brachiaria ruziziensis in the NTS and B. brizantha fallow incorporated into the CTS favored higher levels of nitrate in the soil. In contrast, B. brizantha and fallow in the CTS and millet and P. maximum in the NTS favored the buildup of high levels of ammonium in the soil. The treatments under the plowed cover crops millet and fallow allowed for a higher upland rice yield. The tillage system and nature of the cover crops could be used to achieve the desired levels and forms of nitrogen in soil.
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spelling Cover crops affecting levels of ammonium and nitrate in the soil and upland rice developmentBrachiaria brizanthaBrachiaria ruziziensisPanicum maximummilletfallowsoil managementThe use of cover crops in no-tillage systems (NTS) increases the levels of organic matter and could increase the nitrogen content of the soil, contributing to reduce fertilizers costs. The knowledge of these processes is fundamental for deciding whether cover crops can be effectively incorporated into the agricultural production system. The objective of this study was to evaluate the effect of cover crop species on the levels of nitrate and ammonium in the soil in early upland rice development, as well upland rice yield. A field experiment was performed and treatments consisted of growing rice on five cover crops (Panicum maximum, Brachiaria ruziziensis, Brachiaria brizantha, millet and fallow) in an NTS and two control treatments (Brachiaria brizantha and fallow) under a conventional tillage system, CTS, (one plowing and two disking). The experimental design was a complete randomized block with three replications. The soil samples were collected during a period of six weeks (0, 7, 14, 21, 28 and 35 days in relation to upland rice sowing). The cover crops Brachiaria brizantha, Panicum maximum and Brachiaria ruziziensis in the NTS and B. brizantha fallow incorporated into the CTS favored higher levels of nitrate in the soil. In contrast, B. brizantha and fallow in the CTS and millet and P. maximum in the NTS favored the buildup of high levels of ammonium in the soil. The treatments under the plowed cover crops millet and fallow allowed for a higher upland rice yield. The tillage system and nature of the cover crops could be used to achieve the desired levels and forms of nitrogen in soil.Empresa Brasileira de Pesquisa Agropecuaria - EmbrapaConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Embrapa Arroz & Feijao, BR-75375000 Santo Antonio De Goias, Go, BrazilUniv Estadual Paulista, Dept Prod Vegetal, UNESP, FCA, BR-18610307 Botucatu, SP, BrazilUniv Estadual Paulista, Dept Prod Vegetal, UNESP, FCA, BR-18610307 Botucatu, SP, BrazilUniversidade Estadual de Londrina (UEL)Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA)Universidade Estadual Paulista (Unesp)Nascente, Adriano StephanCosta Crusciol, Carlos Alexandre [UNESP]2014-12-03T13:11:35Z2014-12-03T13:11:35Z2013-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article2189-2202application/pdfhttp://dx.doi.org/10.5433/1679-0359.2013v34n5p2189Semina-ciencias Agrarias. Londrina: Univ Estadual Londrina, v. 34, n. 5, p. 2189-2202, 2013.1676-546Xhttp://hdl.handle.net/11449/11329410.5433/1679-0359.2013v34n5p2189WOS:000328272600016WOS000328272600016.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengSemina: Ciências Agrárias0.349info:eu-repo/semantics/openAccess2024-04-30T15:59:06Zoai:repositorio.unesp.br:11449/113294Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:40:03.949868Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Cover crops affecting levels of ammonium and nitrate in the soil and upland rice development
title Cover crops affecting levels of ammonium and nitrate in the soil and upland rice development
spellingShingle Cover crops affecting levels of ammonium and nitrate in the soil and upland rice development
Nascente, Adriano Stephan
Brachiaria brizantha
Brachiaria ruziziensis
Panicum maximum
millet
fallow
soil management
title_short Cover crops affecting levels of ammonium and nitrate in the soil and upland rice development
title_full Cover crops affecting levels of ammonium and nitrate in the soil and upland rice development
title_fullStr Cover crops affecting levels of ammonium and nitrate in the soil and upland rice development
title_full_unstemmed Cover crops affecting levels of ammonium and nitrate in the soil and upland rice development
title_sort Cover crops affecting levels of ammonium and nitrate in the soil and upland rice development
author Nascente, Adriano Stephan
author_facet Nascente, Adriano Stephan
Costa Crusciol, Carlos Alexandre [UNESP]
author_role author
author2 Costa Crusciol, Carlos Alexandre [UNESP]
author2_role author
dc.contributor.none.fl_str_mv Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Nascente, Adriano Stephan
Costa Crusciol, Carlos Alexandre [UNESP]
dc.subject.por.fl_str_mv Brachiaria brizantha
Brachiaria ruziziensis
Panicum maximum
millet
fallow
soil management
topic Brachiaria brizantha
Brachiaria ruziziensis
Panicum maximum
millet
fallow
soil management
description The use of cover crops in no-tillage systems (NTS) increases the levels of organic matter and could increase the nitrogen content of the soil, contributing to reduce fertilizers costs. The knowledge of these processes is fundamental for deciding whether cover crops can be effectively incorporated into the agricultural production system. The objective of this study was to evaluate the effect of cover crop species on the levels of nitrate and ammonium in the soil in early upland rice development, as well upland rice yield. A field experiment was performed and treatments consisted of growing rice on five cover crops (Panicum maximum, Brachiaria ruziziensis, Brachiaria brizantha, millet and fallow) in an NTS and two control treatments (Brachiaria brizantha and fallow) under a conventional tillage system, CTS, (one plowing and two disking). The experimental design was a complete randomized block with three replications. The soil samples were collected during a period of six weeks (0, 7, 14, 21, 28 and 35 days in relation to upland rice sowing). The cover crops Brachiaria brizantha, Panicum maximum and Brachiaria ruziziensis in the NTS and B. brizantha fallow incorporated into the CTS favored higher levels of nitrate in the soil. In contrast, B. brizantha and fallow in the CTS and millet and P. maximum in the NTS favored the buildup of high levels of ammonium in the soil. The treatments under the plowed cover crops millet and fallow allowed for a higher upland rice yield. The tillage system and nature of the cover crops could be used to achieve the desired levels and forms of nitrogen in soil.
publishDate 2013
dc.date.none.fl_str_mv 2013-01-01
2014-12-03T13:11:35Z
2014-12-03T13:11:35Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.5433/1679-0359.2013v34n5p2189
Semina-ciencias Agrarias. Londrina: Univ Estadual Londrina, v. 34, n. 5, p. 2189-2202, 2013.
1676-546X
http://hdl.handle.net/11449/113294
10.5433/1679-0359.2013v34n5p2189
WOS:000328272600016
WOS000328272600016.pdf
url http://dx.doi.org/10.5433/1679-0359.2013v34n5p2189
http://hdl.handle.net/11449/113294
identifier_str_mv Semina-ciencias Agrarias. Londrina: Univ Estadual Londrina, v. 34, n. 5, p. 2189-2202, 2013.
1676-546X
10.5433/1679-0359.2013v34n5p2189
WOS:000328272600016
WOS000328272600016.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Semina: Ciências Agrárias
0.349
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 2189-2202
application/pdf
dc.publisher.none.fl_str_mv Universidade Estadual de Londrina (UEL)
publisher.none.fl_str_mv Universidade Estadual de Londrina (UEL)
dc.source.none.fl_str_mv Web of Science
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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