Straw and early nitrogen fertilization affect soil properties and upland rice yield
Autor(a) principal: | |
---|---|
Data de Publicação: | 2016 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Pesquisa Agropecuária Tropical (Online) |
Texto Completo: | https://revistas.ufg.br/pat/article/view/41386 |
Resumo: | The presence of cover crop straw and early application of total N at sowing may provide significant changes in the microbial population, reflecting on the N dynamics in the soil and in upland rice plants. This study aimed at determining the effect of the early application of nitrogen doses as mineral N and microbial biomass carbon in the soil, as well as in the activity of nitrate reductase, and grain yield of upland rice plants cultivated under no-tillage system (NTS). A randomized blocks design, in a split-plot scheme, with four replications, was used. The treatments consisted of N doses (0 kg ha-1, 40 kg ha-1, 80 kg ha-1 and 120 kg ha-1) and the presence or absence of U. brizantha cover straw. Maintaining the straw on the soil surface reduces the ammonium levels and increases the microbial biomass carbon content of the soil. The application of increasing doses of N in the soil provides increases in the levels of nitrate and ammonium in the soil up to 28 days after emergence. The activity of the nitrate reductase enzyme in the plants increases and the contents of ammonium and nitrate in the soil decrease with the crop development. The number of panicles and grain yield of upland rice increase with the increase of the nitrogen fertilization, but decrease in the presence of U. brizantha straw. Thus, it is recommend the use of early N fertilization in upland rice crop. |
id |
UFG-6_f5655341bf3ec78c68fb234a478a5356 |
---|---|
oai_identifier_str |
oai:ojs.revistas.ufg.br:article/41386 |
network_acronym_str |
UFG-6 |
network_name_str |
Pesquisa Agropecuária Tropical (Online) |
repository_id_str |
|
spelling |
Straw and early nitrogen fertilization affect soil properties and upland rice yieldPalha e fertilização nitrogenada antecipada afetam atributos do solo e produtividade do arroz de terras altasOryza sativa L.Brazilian Savannahsustainable agriculture.Oryza sativa L.Cerradoagricultura sustentável.The presence of cover crop straw and early application of total N at sowing may provide significant changes in the microbial population, reflecting on the N dynamics in the soil and in upland rice plants. This study aimed at determining the effect of the early application of nitrogen doses as mineral N and microbial biomass carbon in the soil, as well as in the activity of nitrate reductase, and grain yield of upland rice plants cultivated under no-tillage system (NTS). A randomized blocks design, in a split-plot scheme, with four replications, was used. The treatments consisted of N doses (0 kg ha-1, 40 kg ha-1, 80 kg ha-1 and 120 kg ha-1) and the presence or absence of U. brizantha cover straw. Maintaining the straw on the soil surface reduces the ammonium levels and increases the microbial biomass carbon content of the soil. The application of increasing doses of N in the soil provides increases in the levels of nitrate and ammonium in the soil up to 28 days after emergence. The activity of the nitrate reductase enzyme in the plants increases and the contents of ammonium and nitrate in the soil decrease with the crop development. The number of panicles and grain yield of upland rice increase with the increase of the nitrogen fertilization, but decrease in the presence of U. brizantha straw. Thus, it is recommend the use of early N fertilization in upland rice crop.A presença de palha de plantas de cobertura e a aplicação de N todo na semeadura podem proporcionar alterações significativas na população microbiana, com reflexos na dinâmica de N no solo e na planta de arroz. Objetivou-se determinar o efeito da antecipação da aplicação de doses de N sobre as formas de N mineral e carbono da biomassa microbiana no solo, bem como na atividade da enzima redutase do nitrato, e a produtividade de arroz de terras altas cultivado sob sistema plantio direto (SPD). O delineamento experimental foi em blocos ao acaso, em parcelas subdivididas, com quatro repetições. Os tratamentos foram constituídos por doses de N (0 kg ha-1, 40 kg ha-1, 80 kg ha-1 e 120 kg ha-1) e pela presença ou ausência de palha de cobertura de U. brizantha. A manutenção da palha na superfície do solo reduz os teores de amônio e aumenta os teores de carbono da biomassa microbiana no solo. A aplicação de doses crescentes de N no solo proporciona incrementos nos teores de nitrato e amônio no solo, até 28 dias após a emergência. A atividade da enzima redutase do nitrato nas plantas aumenta e os teores de amônio e nitrato no solo diminuem com o desenvolvimento da cultura. O número de panículas e a produtividade de grãos do arroz de terras altas aumentam com o incremento na adubação nitrogenada, mas diminuem com a presença de palha de U. brizantha. Assim, recomenda-se o uso da adubação antecipada de N na cultura do arroz de terras altas.Escola de Agronomia - Universidade Federal de Goiás2016-09-15info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionAvaliado por paresapplication/pdfhttps://revistas.ufg.br/pat/article/view/41386Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; v. 46, n. 3, Jul./Sep. 2016; 284-291Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); v. 46, n. 3, jul./set. 2016; 284-291Pesquisa Agropecuária Tropical; v. 46, n. 3, jul./set. 2016; 284-2911983-4063reponame:Pesquisa Agropecuária Tropical (Online)instname:Universidade Federal de Goiás (UFG)instacron:UFGenghttps://revistas.ufg.br/pat/article/view/41386/21668Copyright (c) 2016 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics)info:eu-repo/semantics/openAccessNascente, Adriano StephanLanna, Anna Cristina2020-07-13T18:07:18Zoai:ojs.revistas.ufg.br:article/41386Revistahttps://revistas.ufg.br/patPUBhttps://revistas.ufg.br/pat/oaiaseleguini.pat@gmail.com||mgoes@agro.ufg.br1983-40631517-6398opendoar:2024-05-21T19:56:13.512890Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG)true |
dc.title.none.fl_str_mv |
Straw and early nitrogen fertilization affect soil properties and upland rice yield Palha e fertilização nitrogenada antecipada afetam atributos do solo e produtividade do arroz de terras altas |
title |
Straw and early nitrogen fertilization affect soil properties and upland rice yield |
spellingShingle |
Straw and early nitrogen fertilization affect soil properties and upland rice yield Nascente, Adriano Stephan Oryza sativa L. Brazilian Savannah sustainable agriculture. Oryza sativa L. Cerrado agricultura sustentável. |
title_short |
Straw and early nitrogen fertilization affect soil properties and upland rice yield |
title_full |
Straw and early nitrogen fertilization affect soil properties and upland rice yield |
title_fullStr |
Straw and early nitrogen fertilization affect soil properties and upland rice yield |
title_full_unstemmed |
Straw and early nitrogen fertilization affect soil properties and upland rice yield |
title_sort |
Straw and early nitrogen fertilization affect soil properties and upland rice yield |
author |
Nascente, Adriano Stephan |
author_facet |
Nascente, Adriano Stephan Lanna, Anna Cristina |
author_role |
author |
author2 |
Lanna, Anna Cristina |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Nascente, Adriano Stephan Lanna, Anna Cristina |
dc.subject.por.fl_str_mv |
Oryza sativa L. Brazilian Savannah sustainable agriculture. Oryza sativa L. Cerrado agricultura sustentável. |
topic |
Oryza sativa L. Brazilian Savannah sustainable agriculture. Oryza sativa L. Cerrado agricultura sustentável. |
description |
The presence of cover crop straw and early application of total N at sowing may provide significant changes in the microbial population, reflecting on the N dynamics in the soil and in upland rice plants. This study aimed at determining the effect of the early application of nitrogen doses as mineral N and microbial biomass carbon in the soil, as well as in the activity of nitrate reductase, and grain yield of upland rice plants cultivated under no-tillage system (NTS). A randomized blocks design, in a split-plot scheme, with four replications, was used. The treatments consisted of N doses (0 kg ha-1, 40 kg ha-1, 80 kg ha-1 and 120 kg ha-1) and the presence or absence of U. brizantha cover straw. Maintaining the straw on the soil surface reduces the ammonium levels and increases the microbial biomass carbon content of the soil. The application of increasing doses of N in the soil provides increases in the levels of nitrate and ammonium in the soil up to 28 days after emergence. The activity of the nitrate reductase enzyme in the plants increases and the contents of ammonium and nitrate in the soil decrease with the crop development. The number of panicles and grain yield of upland rice increase with the increase of the nitrogen fertilization, but decrease in the presence of U. brizantha straw. Thus, it is recommend the use of early N fertilization in upland rice crop. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-09-15 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Avaliado por pares |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://revistas.ufg.br/pat/article/view/41386 |
url |
https://revistas.ufg.br/pat/article/view/41386 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://revistas.ufg.br/pat/article/view/41386/21668 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2016 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics) info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2016 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics) |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Escola de Agronomia - Universidade Federal de Goiás |
publisher.none.fl_str_mv |
Escola de Agronomia - Universidade Federal de Goiás |
dc.source.none.fl_str_mv |
Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; v. 46, n. 3, Jul./Sep. 2016; 284-291 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); v. 46, n. 3, jul./set. 2016; 284-291 Pesquisa Agropecuária Tropical; v. 46, n. 3, jul./set. 2016; 284-291 1983-4063 reponame:Pesquisa Agropecuária Tropical (Online) instname:Universidade Federal de Goiás (UFG) instacron:UFG |
instname_str |
Universidade Federal de Goiás (UFG) |
instacron_str |
UFG |
institution |
UFG |
reponame_str |
Pesquisa Agropecuária Tropical (Online) |
collection |
Pesquisa Agropecuária Tropical (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG) |
repository.mail.fl_str_mv |
aseleguini.pat@gmail.com||mgoes@agro.ufg.br |
_version_ |
1799874819396730880 |