Cover crops affecting levels of ammonium and nitrate in the soil and upland rice development
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | |
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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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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1808129448185167872 |