Nitrogen dynamics in soil as affected by liming and nitrogen fertilization, with straw on the soil surface
Autor(a) principal: | |
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Data de Publicação: | 2003 |
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/6574 |
Resumo: | In no till systems liming has been applied to soil surface, causing an excess of lime in the first centimeters of the soil profile, in which N is also applied and root length density is high. The objective of this work was to study N and pH dynamics in the soil profile as affected by liming and N fertilizer broadcast over the straw. Cotton plants (Gossypium hirsutum) were grown for 60 days in pots that received lime incorporated or applied to soil surface. The N was broadcasted at rates of 0, 50, 100 and 150 kg ha-1, as ammonium sulfate. Pearl millet straw was added to soil surface at a rate of 4 ton ha-1. Liming increased N mineralization and nitrification in soil irrespective of lime application method, increasing N availability to cotton and the probability of N leaching. The N uptake by the plants and its immobilization in the microbial mass in the soil neutralized the effect of ammonium nitrogen on soil pH. Cotton responded better when lime was incorporated but this response was not caused by differences in N availability. |
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Nitrogen dynamics in soil as affected by liming and nitrogen fertilization, with straw on the soil surfaceDinâmica do nitrogênio no solo em razão da calagem e adubação nitrogenada, com palha na superfícieGossypium hirsutum; mineralization; nitrification; soil pH; direct sowingGossypium hirsutum; mineralização; nitrificação; pH do solo; plantio diretoIn no till systems liming has been applied to soil surface, causing an excess of lime in the first centimeters of the soil profile, in which N is also applied and root length density is high. The objective of this work was to study N and pH dynamics in the soil profile as affected by liming and N fertilizer broadcast over the straw. Cotton plants (Gossypium hirsutum) were grown for 60 days in pots that received lime incorporated or applied to soil surface. The N was broadcasted at rates of 0, 50, 100 and 150 kg ha-1, as ammonium sulfate. Pearl millet straw was added to soil surface at a rate of 4 ton ha-1. Liming increased N mineralization and nitrification in soil irrespective of lime application method, increasing N availability to cotton and the probability of N leaching. The N uptake by the plants and its immobilization in the microbial mass in the soil neutralized the effect of ammonium nitrogen on soil pH. Cotton responded better when lime was incorporated but this response was not caused by differences in N availability.Em sistemas com semeadura direta, a calagem tem sido aplicada superficialmente, causando excesso de calcário nos primeiros centímetros do perfil do solo, onde também é aplicado o N em cobertura e a densidade de comprimento radicular é alta. O objetivo deste trabalho foi estudar a dinâmica do N e do pH do solo em razão da calagem em superfície e aplicação de N em cobertura, na presença de palha. Plantas de algodão (Gossypium hirsutum) foram cultivadas, por 60 dias, em vasos que receberam calagem superficial ou incorporada e aplicação de doses equivalentes a 0, 50, 100 e 150 kg ha-1 de N em cobertura, na forma de sulfato de amônio; os vasos apresentavam, na superfície, o equivalente a 4 t ha-1 de palha de milheto. A calagem aumentou a mineralização e a nitrificação do N no solo, independentemente do modo de aplicação de calcário, aumentando a sua disponibilidade à planta e também a possibilidade de lixiviação. A absorção de N pela planta, além de sua imobilização pela massa microbiana do solo, neutralizou o efeito do adubo nitrogenado amoniacal no pH do solo. O algodoeiro respondeu melhor à calagem incorporada do que à superficial, mas esta resposta não foi causada por diferenças na disponibilidade de nitrogênio.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraRosolem, Ciro AntonioFoloni, José Salvador SimonetiOliveira, Rosa Honorato de2003-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/6574Pesquisa Agropecuaria Brasileira; v.38, n.2, fev. 2003; 301-309Pesquisa Agropecuária Brasileira; v.38, n.2, fev. 2003; 301-3091678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/6574/3631info:eu-repo/semantics/openAccess2014-08-13T16:30:26Zoai:ojs.seer.sct.embrapa.br:article/6574Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-08-13T16:30:26Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Nitrogen dynamics in soil as affected by liming and nitrogen fertilization, with straw on the soil surface Dinâmica do nitrogênio no solo em razão da calagem e adubação nitrogenada, com palha na superfície |
title |
Nitrogen dynamics in soil as affected by liming and nitrogen fertilization, with straw on the soil surface |
spellingShingle |
Nitrogen dynamics in soil as affected by liming and nitrogen fertilization, with straw on the soil surface Rosolem, Ciro Antonio Gossypium hirsutum; mineralization; nitrification; soil pH; direct sowing Gossypium hirsutum; mineralização; nitrificação; pH do solo; plantio direto |
title_short |
Nitrogen dynamics in soil as affected by liming and nitrogen fertilization, with straw on the soil surface |
title_full |
Nitrogen dynamics in soil as affected by liming and nitrogen fertilization, with straw on the soil surface |
title_fullStr |
Nitrogen dynamics in soil as affected by liming and nitrogen fertilization, with straw on the soil surface |
title_full_unstemmed |
Nitrogen dynamics in soil as affected by liming and nitrogen fertilization, with straw on the soil surface |
title_sort |
Nitrogen dynamics in soil as affected by liming and nitrogen fertilization, with straw on the soil surface |
author |
Rosolem, Ciro Antonio |
author_facet |
Rosolem, Ciro Antonio Foloni, José Salvador Simoneti Oliveira, Rosa Honorato de |
author_role |
author |
author2 |
Foloni, José Salvador Simoneti Oliveira, Rosa Honorato de |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Rosolem, Ciro Antonio Foloni, José Salvador Simoneti Oliveira, Rosa Honorato de |
dc.subject.por.fl_str_mv |
Gossypium hirsutum; mineralization; nitrification; soil pH; direct sowing Gossypium hirsutum; mineralização; nitrificação; pH do solo; plantio direto |
topic |
Gossypium hirsutum; mineralization; nitrification; soil pH; direct sowing Gossypium hirsutum; mineralização; nitrificação; pH do solo; plantio direto |
description |
In no till systems liming has been applied to soil surface, causing an excess of lime in the first centimeters of the soil profile, in which N is also applied and root length density is high. The objective of this work was to study N and pH dynamics in the soil profile as affected by liming and N fertilizer broadcast over the straw. Cotton plants (Gossypium hirsutum) were grown for 60 days in pots that received lime incorporated or applied to soil surface. The N was broadcasted at rates of 0, 50, 100 and 150 kg ha-1, as ammonium sulfate. Pearl millet straw was added to soil surface at a rate of 4 ton ha-1. Liming increased N mineralization and nitrification in soil irrespective of lime application method, increasing N availability to cotton and the probability of N leaching. The N uptake by the plants and its immobilization in the microbial mass in the soil neutralized the effect of ammonium nitrogen on soil pH. Cotton responded better when lime was incorporated but this response was not caused by differences in N availability. |
publishDate |
2003 |
dc.date.none.fl_str_mv |
2003-02-01 |
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/6574 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/6574 |
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/6574/3631 |
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.38, n.2, fev. 2003; 301-309 Pesquisa Agropecuária Brasileira; v.38, n.2, fev. 2003; 301-309 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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1793416706810445824 |