Nitrogen utilization by corn as affected by green manures and nitrogen and phosphorus fertilizers
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , , |
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/1241 |
Resumo: | The objectives of this work were to evaluate corn (Zea mays) nitrogen (N) utilization from the green manure crops sunnhemp (Crotalaria juncea) and millet (Pennisetum glaucum L.) and from urea, and to calculate the contribution of soil N to the mineral nutrition of corn, as affected by nitrogen and phosphorus mineral fertilizers. The experiment was conducted in a greenhouse, in pots with 5 kg of soil (Rhodic Hapludox). The experimental design was completely randomized, with 32 treatments and four replicates, in a 4x4x2 factorial array. The treatments were combinations of four N rates as urea: 0, 0.75, 1.50 and 2.25 g N per pot (labeled or not with 15N); four P rates as triple superphosphate: 0, 0.175, 0.350 and 0.700 g P per pot; and sunnhemp and millet labeled or not with 15N. Green manure dry matter provided 1 g N per pot. Corn plants were evaluated for dry mass yield, accumulated N, and N utilization from green manures, urea, and the soil. The mineral fertilizer supplied the largest amount of N to the corn plants, followed by N from soil and from green manures. The N utilization from sunnhemp by corn plants was greater than the N utilization from millet. The phosphorus application increased the assimilation of N from urea and from green manures. |
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Nitrogen utilization by corn as affected by green manures and nitrogen and phosphorus fertilizersAproveitamento de nitrogênio pelo milho, em razão da adubação verde, nitrogenada e fosfatadaCrotalaria juncea; Pennisetum glaucum; Zea mays; isotopic dilutio; nitrogen mineralization; ureaCrotalaria juncea; Pennisetum glaucum; Zea mays; diluição isotópica; mineralização de nitrogênio; ureiaThe objectives of this work were to evaluate corn (Zea mays) nitrogen (N) utilization from the green manure crops sunnhemp (Crotalaria juncea) and millet (Pennisetum glaucum L.) and from urea, and to calculate the contribution of soil N to the mineral nutrition of corn, as affected by nitrogen and phosphorus mineral fertilizers. The experiment was conducted in a greenhouse, in pots with 5 kg of soil (Rhodic Hapludox). The experimental design was completely randomized, with 32 treatments and four replicates, in a 4x4x2 factorial array. The treatments were combinations of four N rates as urea: 0, 0.75, 1.50 and 2.25 g N per pot (labeled or not with 15N); four P rates as triple superphosphate: 0, 0.175, 0.350 and 0.700 g P per pot; and sunnhemp and millet labeled or not with 15N. Green manure dry matter provided 1 g N per pot. Corn plants were evaluated for dry mass yield, accumulated N, and N utilization from green manures, urea, and the soil. The mineral fertilizer supplied the largest amount of N to the corn plants, followed by N from soil and from green manures. The N utilization from sunnhemp by corn plants was greater than the N utilization from millet. The phosphorus application increased the assimilation of N from urea and from green manures.O objetivo deste trabalho foi avaliar o aproveitamento, pelo milho (Zea mays L.), do nitrogênio (N) proveniente da ureia, de restos culturais da crotalária (Crotalaria juncea) e do milheto (Pennisetum glaucum), e do solo, em função da adubação nitrogenada e fosfatada. O experimento foi conduzido em casa de vegetação, em vasos com 5 kg de solo (Latossolo Vermelho distroférrico). Utilizou-se o delineamento inteiramente ao acaso, com 32 tratamentos e 4 repetições, dispostos em esquema fatorial 4x4x2. Os tratamentos consistiram da combinação de quatro doses de N, na forma de ureia – 0, 0,75, 1,50 e 2,25 g por vaso (com ou sem marcação com 15N); quatro doses de P, na forma de superfosfato triplo – 0, 0,175, 0,350 e 0,700 g por vaso; e dois tipos de adubo verde, com ou sem marcação com 15N – crotalária e milheto, com adição de matéria seca equivalente a 1 g de N por vaso. Foram avaliados a produtividade de matéria seca, a quantidade de N acumulado e o aproveitamento do N pelo milho. O fertilizante mineral forneceu a maior parte do N acumulado nas plantas de milho, seguido pelo N do solo e de adubos verdes. O aproveitamento do N proveniente da crotalária, pelo milho, foi maior que o do N do milheto. A aplicação de fósforo aumentou a assimilação do N proveniente da ureia e de adubos verdes.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraFundação de Amparo à Pesquisa do Estado de São Paulo - FAPESPSilva, Edson Cabral daMuraoka, TakashiVillanueva, Felipe Carlos AlvarezEspinal, Freddy Sinencio Contreras2010-11-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/1241Pesquisa Agropecuaria Brasileira; v.44, n.2, fev. 2009; 118-127Pesquisa Agropecuária Brasileira; v.44, n.2, fev. 2009; 118-1271678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/1241/5655info:eu-repo/semantics/openAccess2014-11-19T18:01:49Zoai:ojs.seer.sct.embrapa.br:article/1241Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-11-19T18:01:49Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Nitrogen utilization by corn as affected by green manures and nitrogen and phosphorus fertilizers Aproveitamento de nitrogênio pelo milho, em razão da adubação verde, nitrogenada e fosfatada |
title |
Nitrogen utilization by corn as affected by green manures and nitrogen and phosphorus fertilizers |
spellingShingle |
Nitrogen utilization by corn as affected by green manures and nitrogen and phosphorus fertilizers Silva, Edson Cabral da Crotalaria juncea; Pennisetum glaucum; Zea mays; isotopic dilutio; nitrogen mineralization; urea Crotalaria juncea; Pennisetum glaucum; Zea mays; diluição isotópica; mineralização de nitrogênio; ureia |
title_short |
Nitrogen utilization by corn as affected by green manures and nitrogen and phosphorus fertilizers |
title_full |
Nitrogen utilization by corn as affected by green manures and nitrogen and phosphorus fertilizers |
title_fullStr |
Nitrogen utilization by corn as affected by green manures and nitrogen and phosphorus fertilizers |
title_full_unstemmed |
Nitrogen utilization by corn as affected by green manures and nitrogen and phosphorus fertilizers |
title_sort |
Nitrogen utilization by corn as affected by green manures and nitrogen and phosphorus fertilizers |
author |
Silva, Edson Cabral da |
author_facet |
Silva, Edson Cabral da Muraoka, Takashi Villanueva, Felipe Carlos Alvarez Espinal, Freddy Sinencio Contreras |
author_role |
author |
author2 |
Muraoka, Takashi Villanueva, Felipe Carlos Alvarez Espinal, Freddy Sinencio Contreras |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Fundação de Amparo à Pesquisa do Estado de São Paulo - FAPESP |
dc.contributor.author.fl_str_mv |
Silva, Edson Cabral da Muraoka, Takashi Villanueva, Felipe Carlos Alvarez Espinal, Freddy Sinencio Contreras |
dc.subject.por.fl_str_mv |
Crotalaria juncea; Pennisetum glaucum; Zea mays; isotopic dilutio; nitrogen mineralization; urea Crotalaria juncea; Pennisetum glaucum; Zea mays; diluição isotópica; mineralização de nitrogênio; ureia |
topic |
Crotalaria juncea; Pennisetum glaucum; Zea mays; isotopic dilutio; nitrogen mineralization; urea Crotalaria juncea; Pennisetum glaucum; Zea mays; diluição isotópica; mineralização de nitrogênio; ureia |
description |
The objectives of this work were to evaluate corn (Zea mays) nitrogen (N) utilization from the green manure crops sunnhemp (Crotalaria juncea) and millet (Pennisetum glaucum L.) and from urea, and to calculate the contribution of soil N to the mineral nutrition of corn, as affected by nitrogen and phosphorus mineral fertilizers. The experiment was conducted in a greenhouse, in pots with 5 kg of soil (Rhodic Hapludox). The experimental design was completely randomized, with 32 treatments and four replicates, in a 4x4x2 factorial array. The treatments were combinations of four N rates as urea: 0, 0.75, 1.50 and 2.25 g N per pot (labeled or not with 15N); four P rates as triple superphosphate: 0, 0.175, 0.350 and 0.700 g P per pot; and sunnhemp and millet labeled or not with 15N. Green manure dry matter provided 1 g N per pot. Corn plants were evaluated for dry mass yield, accumulated N, and N utilization from green manures, urea, and the soil. The mineral fertilizer supplied the largest amount of N to the corn plants, followed by N from soil and from green manures. The N utilization from sunnhemp by corn plants was greater than the N utilization from millet. The phosphorus application increased the assimilation of N from urea and from green manures. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-11-09 |
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/1241 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/1241 |
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/1241/5655 |
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.44, n.2, fev. 2009; 118-127 Pesquisa Agropecuária Brasileira; v.44, n.2, fev. 2009; 118-127 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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1793416676747771904 |