Adequacy of side dress nitrogen rates in corn based on soil and plant indicators

Detalhes bibliográficos
Autor(a) principal: Rambo, Lisandro
Data de Publicação: 2008
Outros Autores: Silva, Paulo Regis Ferreira da, Strieder, Mércio Luiz, Delatorre, Carla Andreá, Bayer, Cimélio, Argenta, Gilber
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/7
Resumo: The objective of this work was to test one methodology to determine nitrogen (N) optimum rate to side dress at V6 corn stage, using soil and plant characteristics, and to verify which are the most precise indicators of N rate application. A field experiment was carried out in Eldorado do Sul, RS, Brazil, in two growing seasons. The treatments were five N rates applied in two timings. The following variables were measured: corn grain yield, leaf relative chlorophyll content, leaf and plant dry weight, N content and accumulated in the leaf, and plant and soil nitrate, ammonium and N mineral contents were measured at V6. From the evaluated characteristics, the most precise to predict optimum N rate for side dressing in corn were plant dry weight, N accumulated in the plant and leaf relative chlorophyll content. The results show that is possible to adapt or to develop a method to predict the optimum N rates for side dressing, using soil and plant characteristics, since there is a N response curve available from a group of experiments.
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spelling Adequacy of side dress nitrogen rates in corn based on soil and plant indicatorsAdequação de doses de nitrogênio em milho com base em indicadores de solo e de plantaZea mays; topdressing; plant nitrogen; soil nitrogen; grain yield; chlorophyll contentZea mays; adubação de cobertura; nitrogênio na planta; nitrogênio no solo; rendimento de grãos; teor de clorofila.The objective of this work was to test one methodology to determine nitrogen (N) optimum rate to side dress at V6 corn stage, using soil and plant characteristics, and to verify which are the most precise indicators of N rate application. A field experiment was carried out in Eldorado do Sul, RS, Brazil, in two growing seasons. The treatments were five N rates applied in two timings. The following variables were measured: corn grain yield, leaf relative chlorophyll content, leaf and plant dry weight, N content and accumulated in the leaf, and plant and soil nitrate, ammonium and N mineral contents were measured at V6. From the evaluated characteristics, the most precise to predict optimum N rate for side dressing in corn were plant dry weight, N accumulated in the plant and leaf relative chlorophyll content. The results show that is possible to adapt or to develop a method to predict the optimum N rates for side dressing, using soil and plant characteristics, since there is a N response curve available from a group of experiments.O objetivo deste trabalho foi testar uma metodologia para determinar doses ótimas de N a serem aplicadas em cobertura, no estádio V6 do milho, com base em características de solo e de planta, e verificar quais os indicadores mais precisos para a predição da dose de N a ser aplicada. O experimento foi conduzido em Eldorado do Sul, RS, em dois anos agrícolas. Os tratamentos consistiram de cinco doses de N, aplicadas em duas épocas. Além do rendimento de grãos, determinaram-se, no estádio V6, o teor relativo de clorofila na folha, as massas de matéria seca da folha e da planta, o teor e a quantidade de N acumulados na folha e na planta, teores de nitrato, amônio e N mineral no solo. As características de planta foram mais eficientes para a predição da dose de N em cobertura no milho, nos dois anos agrícolas, do que as características de solo, com destaque para massa de matéria seca e N acumulado na planta, seguidas pelo teor relativo de clorofila na folha. É possível desenvolver ou adaptar a metodologia testada, para predição de doses ótimas de N em cobertura em milho, a partir de características de planta e de solo, desde que se possua uma rede de ensaios com uma curva de reposta a esse nutriente.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraCNPqRambo, LisandroSilva, Paulo Regis Ferreira daStrieder, Mércio LuizDelatorre, Carla AndreáBayer, CimélioArgenta, Gilber2008-08-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/7Pesquisa Agropecuaria Brasileira; v.43, n.3, mar. 2008; 401-409Pesquisa Agropecuária Brasileira; v.43, n.3, mar. 2008; 401-4091678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/7/107https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/7/5info:eu-repo/semantics/openAccess2014-04-30T18:21:02Zoai:ojs.seer.sct.embrapa.br:article/7Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-30T18:21:02Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Adequacy of side dress nitrogen rates in corn based on soil and plant indicators
Adequação de doses de nitrogênio em milho com base em indicadores de solo e de planta
title Adequacy of side dress nitrogen rates in corn based on soil and plant indicators
spellingShingle Adequacy of side dress nitrogen rates in corn based on soil and plant indicators
Rambo, Lisandro
Zea mays; topdressing; plant nitrogen; soil nitrogen; grain yield; chlorophyll content
Zea mays; adubação de cobertura; nitrogênio na planta; nitrogênio no solo; rendimento de grãos; teor de clorofila.
title_short Adequacy of side dress nitrogen rates in corn based on soil and plant indicators
title_full Adequacy of side dress nitrogen rates in corn based on soil and plant indicators
title_fullStr Adequacy of side dress nitrogen rates in corn based on soil and plant indicators
title_full_unstemmed Adequacy of side dress nitrogen rates in corn based on soil and plant indicators
title_sort Adequacy of side dress nitrogen rates in corn based on soil and plant indicators
author Rambo, Lisandro
author_facet Rambo, Lisandro
Silva, Paulo Regis Ferreira da
Strieder, Mércio Luiz
Delatorre, Carla Andreá
Bayer, Cimélio
Argenta, Gilber
author_role author
author2 Silva, Paulo Regis Ferreira da
Strieder, Mércio Luiz
Delatorre, Carla Andreá
Bayer, Cimélio
Argenta, Gilber
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv
CNPq
dc.contributor.author.fl_str_mv Rambo, Lisandro
Silva, Paulo Regis Ferreira da
Strieder, Mércio Luiz
Delatorre, Carla Andreá
Bayer, Cimélio
Argenta, Gilber
dc.subject.por.fl_str_mv Zea mays; topdressing; plant nitrogen; soil nitrogen; grain yield; chlorophyll content
Zea mays; adubação de cobertura; nitrogênio na planta; nitrogênio no solo; rendimento de grãos; teor de clorofila.
topic Zea mays; topdressing; plant nitrogen; soil nitrogen; grain yield; chlorophyll content
Zea mays; adubação de cobertura; nitrogênio na planta; nitrogênio no solo; rendimento de grãos; teor de clorofila.
description The objective of this work was to test one methodology to determine nitrogen (N) optimum rate to side dress at V6 corn stage, using soil and plant characteristics, and to verify which are the most precise indicators of N rate application. A field experiment was carried out in Eldorado do Sul, RS, Brazil, in two growing seasons. The treatments were five N rates applied in two timings. The following variables were measured: corn grain yield, leaf relative chlorophyll content, leaf and plant dry weight, N content and accumulated in the leaf, and plant and soil nitrate, ammonium and N mineral contents were measured at V6. From the evaluated characteristics, the most precise to predict optimum N rate for side dressing in corn were plant dry weight, N accumulated in the plant and leaf relative chlorophyll content. The results show that is possible to adapt or to develop a method to predict the optimum N rates for side dressing, using soil and plant characteristics, since there is a N response curve available from a group of experiments.
publishDate 2008
dc.date.none.fl_str_mv 2008-08-04
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/7
url https://seer.sct.embrapa.br/index.php/pab/article/view/7
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/7/107
https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/7/5
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.43, n.3, mar. 2008; 401-409
Pesquisa Agropecuária Brasileira; v.43, n.3, mar. 2008; 401-409
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
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