Effects of soil applied ammonium plus nytrapirin, on growth and metabolism of four rice cultivars
Autor(a) principal: | |
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Data de Publicação: | 2014 |
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/16876 |
Resumo: | A study made in a greenhouse on the effects of soil applied ammonium-N with and without a nitrification inhibitor on dry matter accumulation, nitrogen and free-sugar contents of four rice (Oriza sativa L.) cultivars. The rice cultivars were Pratão precoce, IR-L63, IAC-25 and De Abril. N-NH4 (150 ppm) was either applied once at seeding or split in three applications (0,23 and 38 days after seeding). Plants had a higher dry weight in the treatments without than in those with the nitrification inhibitor. Application of 150 ppm of N-NH4 plus a nitrification inhibitors at seeding, drastically reduced plant dry weight. Among cultivars, De Abril, showed the highest resistance to high levels of N-NH4 in soils, with or without nitrification inhibitor. Decrease in soil pH was higher in the treatments without inhibitor than in the treatments with inhibitor. Nitrification in the former is assumed to be responsible for this lower pH, while in the later, pH drop may be caused mainly by H+ -extrusion due to higher cation than anion uptake. Plants without a nitrification inhibitor had higher levels of free amino-N than plants with the inhibitor, the reverse was true for the free sugars levels. There was a negative (- 0,67**) correlation between the root/shoot relationship and dry matter accumulation of plants under the NH4 plus a nitrification inhibitor treatments. It is suggested that, under proper conditions. NH4-N and a nitrification inhibitor could be used in upland rice fertilization, with a reduction in N- losses and pH drop. |
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Effects of soil applied ammonium plus nytrapirin, on growth and metabolism of four rice cultivarsRespostas de quatro cultivares de arroz à aplicação de nitrogênio amoniacal com um inibidor de nitrificaçãonitrification inhibitor; ammonium-N uptake; free amino-N; rizhosphere pH; H+ -extrusioninibição de nitrificação; absorção de N-amoniacal; N-amino livre; pH da rizosfera; extrusão de H+A study made in a greenhouse on the effects of soil applied ammonium-N with and without a nitrification inhibitor on dry matter accumulation, nitrogen and free-sugar contents of four rice (Oriza sativa L.) cultivars. The rice cultivars were Pratão precoce, IR-L63, IAC-25 and De Abril. N-NH4 (150 ppm) was either applied once at seeding or split in three applications (0,23 and 38 days after seeding). Plants had a higher dry weight in the treatments without than in those with the nitrification inhibitor. Application of 150 ppm of N-NH4 plus a nitrification inhibitors at seeding, drastically reduced plant dry weight. Among cultivars, De Abril, showed the highest resistance to high levels of N-NH4 in soils, with or without nitrification inhibitor. Decrease in soil pH was higher in the treatments without inhibitor than in the treatments with inhibitor. Nitrification in the former is assumed to be responsible for this lower pH, while in the later, pH drop may be caused mainly by H+ -extrusion due to higher cation than anion uptake. Plants without a nitrification inhibitor had higher levels of free amino-N than plants with the inhibitor, the reverse was true for the free sugars levels. There was a negative (- 0,67**) correlation between the root/shoot relationship and dry matter accumulation of plants under the NH4 plus a nitrification inhibitor treatments. It is suggested that, under proper conditions. NH4-N and a nitrification inhibitor could be used in upland rice fertilization, with a reduction in N- losses and pH drop.Estudo, em casa de vegetação, sobre o efeito de nitrogênio amoniacal, em uma aplicação única ou parcelada, com e sem inibidor de nitrificação, sobre a produção de matéria seca e os teores de nitrogênio e açúcares solúveis, em quatro cultivares de arroz (Oryza sativa L.): Pratão precoce. IRL63, IAC-25 e De Abril. A aplicação do N-NH4, (150 ppm) em dose única por ocasião da semeadura ou em três aplicações (0, 23 e 38 dias após a semeadura) com o inibidor de nitrificação, resultou em uma redução drástica do peso seco das plantas. Nos tratamentos sem inibidor, as plantas acumularam mais matéria seca que nos tratamentos com inibidor. A cv. De Abril revelou uma resistência sensivelmente maior a doses elevadas de N-NH4 no solo, com ou sem o inibidor. A queda de pH do solo (∆ pH) foi maior nos tratamentos sem inibidor. Atribui-se essa diferença à acidez provocada pela nitrificação, enquanto que nos tratamentos com inibidor, a queda de pH estaria controlada basicamente pela extrusão de H+, provocada pela absorção de um excesso de cátions (NH+4) em relação a ânions. As plantas dos tratamentos sem inibidor acumularam maiores teores de amino-N livre que as plantas dos tratamentos com inibidor. Inversamente, as plantas dos tratamentos com inibidor apresentaram menores teores de açúcares livres, em relação às plantas dos tratamentos sem inibidor. Observou-se uma correlação negativa (-0,67**), entre a relação raiz/parte aérea e a acumulação de matéria seca das plantas dos tratamentos com inibidor de nitrificação. Sugere-se que a fertilização de solos com formas reduzidas de N em arroz de sequeiro pode ser feita com a aplicação simultânea de um inibidor de nitrificação. Dependendo da variedade usada e dos métodos de aplicação, as perdas de N por lixiviação e as quedas de pH do solo podem ser sensivelmente reduzidas.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraFernandes, Manlio S.Didonet, Hermeto R.Rossiello, Roberto O. P.2014-04-15info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/16876Pesquisa Agropecuaria Brasileira; v.16, n.3, mar. 1981; 303-307Pesquisa Agropecuária Brasileira; v.16, n.3, mar. 1981; 303-3071678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/16876/11209info:eu-repo/semantics/openAccess2014-04-15T19:39:17Zoai:ojs.seer.sct.embrapa.br:article/16876Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-15T19:39:17Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Effects of soil applied ammonium plus nytrapirin, on growth and metabolism of four rice cultivars Respostas de quatro cultivares de arroz à aplicação de nitrogênio amoniacal com um inibidor de nitrificação |
title |
Effects of soil applied ammonium plus nytrapirin, on growth and metabolism of four rice cultivars |
spellingShingle |
Effects of soil applied ammonium plus nytrapirin, on growth and metabolism of four rice cultivars Fernandes, Manlio S. nitrification inhibitor; ammonium-N uptake; free amino-N; rizhosphere pH; H+ -extrusion inibição de nitrificação; absorção de N-amoniacal; N-amino livre; pH da rizosfera; extrusão de H+ |
title_short |
Effects of soil applied ammonium plus nytrapirin, on growth and metabolism of four rice cultivars |
title_full |
Effects of soil applied ammonium plus nytrapirin, on growth and metabolism of four rice cultivars |
title_fullStr |
Effects of soil applied ammonium plus nytrapirin, on growth and metabolism of four rice cultivars |
title_full_unstemmed |
Effects of soil applied ammonium plus nytrapirin, on growth and metabolism of four rice cultivars |
title_sort |
Effects of soil applied ammonium plus nytrapirin, on growth and metabolism of four rice cultivars |
author |
Fernandes, Manlio S. |
author_facet |
Fernandes, Manlio S. Didonet, Hermeto R. Rossiello, Roberto O. P. |
author_role |
author |
author2 |
Didonet, Hermeto R. Rossiello, Roberto O. P. |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Fernandes, Manlio S. Didonet, Hermeto R. Rossiello, Roberto O. P. |
dc.subject.por.fl_str_mv |
nitrification inhibitor; ammonium-N uptake; free amino-N; rizhosphere pH; H+ -extrusion inibição de nitrificação; absorção de N-amoniacal; N-amino livre; pH da rizosfera; extrusão de H+ |
topic |
nitrification inhibitor; ammonium-N uptake; free amino-N; rizhosphere pH; H+ -extrusion inibição de nitrificação; absorção de N-amoniacal; N-amino livre; pH da rizosfera; extrusão de H+ |
description |
A study made in a greenhouse on the effects of soil applied ammonium-N with and without a nitrification inhibitor on dry matter accumulation, nitrogen and free-sugar contents of four rice (Oriza sativa L.) cultivars. The rice cultivars were Pratão precoce, IR-L63, IAC-25 and De Abril. N-NH4 (150 ppm) was either applied once at seeding or split in three applications (0,23 and 38 days after seeding). Plants had a higher dry weight in the treatments without than in those with the nitrification inhibitor. Application of 150 ppm of N-NH4 plus a nitrification inhibitors at seeding, drastically reduced plant dry weight. Among cultivars, De Abril, showed the highest resistance to high levels of N-NH4 in soils, with or without nitrification inhibitor. Decrease in soil pH was higher in the treatments without inhibitor than in the treatments with inhibitor. Nitrification in the former is assumed to be responsible for this lower pH, while in the later, pH drop may be caused mainly by H+ -extrusion due to higher cation than anion uptake. Plants without a nitrification inhibitor had higher levels of free amino-N than plants with the inhibitor, the reverse was true for the free sugars levels. There was a negative (- 0,67**) correlation between the root/shoot relationship and dry matter accumulation of plants under the NH4 plus a nitrification inhibitor treatments. It is suggested that, under proper conditions. NH4-N and a nitrification inhibitor could be used in upland rice fertilization, with a reduction in N- losses and pH drop. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-04-15 |
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/16876 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/16876 |
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/16876/11209 |
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.16, n.3, mar. 1981; 303-307 Pesquisa Agropecuária Brasileira; v.16, n.3, mar. 1981; 303-307 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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1793416702330929152 |