Variation of pH, specific conductance and N, P, K, Ca and Mg solubility in four flooded soils

Detalhes bibliográficos
Autor(a) principal: Moraes, José Francisco V.
Data de Publicação: 2014
Outros Autores: Freire, Cláudio José S.
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/17248
Resumo: The work discussed in this paper deals with the effects of waterlogging on soil pH, specific conductance and on the concentrations of N, P, K, Ca and Mg in the percolates of four rice soils of Rio Grande do Sul. After flooding, the soil pH increased and the increase was greater in the unfertilized soils than that of the fertilized soils. Flooding increased the specific conductance of the soil percolate by promoting the displacement of the nitrogen, phosphorus, potassium, calcium and magnesium from the soil exchange complex to the soil solution. Almost all nitrogen applied to the soils was lost at the beginning of the experiment. The loss of nitrogen was caused by nitrification and denitrification processes that occur in paddy soils. The phosphorus applied to the soils as fertilizer was fixed at the beginning of the flooding. The fixation on the phosphorus was greater in the Pelotas and Vacacaí soils than that observed in the Formiga and Formiga-Banhado soils. Only after reduction of the soil was the solubility of phosphorus increased.
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spelling Variation of pH, specific conductance and N, P, K, Ca and Mg solubility in four flooded soilsVariação do pH, da condutividade elétrica e da disponibilidade dos nutrientes nitrogênio, fósforo, potássio, cálcio e magnésio em quatro solos submetidos à inundaçãorice soils; flooding; soil reduction; soil solution; anaerobic conditions; aerobic conditions; nitrification; denitrification; exchangeable Fe2+ and Mn2+solos de arroz; inundação; redução do solo; solução do solo; condições anaeróbias; condições aeróbias; nitrificação; desnitrificação; Fe2+ e Mn2+ intercambiávelThe work discussed in this paper deals with the effects of waterlogging on soil pH, specific conductance and on the concentrations of N, P, K, Ca and Mg in the percolates of four rice soils of Rio Grande do Sul. After flooding, the soil pH increased and the increase was greater in the unfertilized soils than that of the fertilized soils. Flooding increased the specific conductance of the soil percolate by promoting the displacement of the nitrogen, phosphorus, potassium, calcium and magnesium from the soil exchange complex to the soil solution. Almost all nitrogen applied to the soils was lost at the beginning of the experiment. The loss of nitrogen was caused by nitrification and denitrification processes that occur in paddy soils. The phosphorus applied to the soils as fertilizer was fixed at the beginning of the flooding. The fixation on the phosphorus was greater in the Pelotas and Vacacaí soils than that observed in the Formiga and Formiga-Banhado soils. Only after reduction of the soil was the solubility of phosphorus increased.São apresentados os efeitos da inundação sobre o pH, a condutividade elétrica e a liberação dos nutrientes N, P, K, Ca e Mg de quatro solos arrozeiros do Rio Grande do Sul. O pH dos solos aumentou com o tempo de inundação. O aumento foi maior nos solos não adubados, indicando a influência dos fertilizantes sobre esta característica físico-química. A inundação dos solos causou o aumento da condutividade elétrica do percolado ao promover a liberação do nitrogênio, do fósforo, do potássio, do cálcio e do magnésio para a solução do solo. O nitrogênio aplicado ao solo como fertilizante foi perdido, em grande parte, nas primeiras semanas de submergência. A perda do nitrogênio acreditamos ter sido causada pelos processos de nitrificação e desnitrificação que ocorrem nos solos inundados. O fósforo aplicado ao solo foi fixado no início da inundação. A fixação do fósforo foi maior nos solos Pelotas e Vacacaí, os quais, posteriormente, apresentaram também menor liberação desse nutriente do que os solos Formiga e Formiga-Banhado.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraMoraes, José Francisco V.Freire, Cláudio José S.2014-04-15info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/17248Pesquisa Agropecuaria Brasileira; v.9, n.9, 1974: Série Agronomia; 35-43Pesquisa Agropecuária Brasileira; v.9, n.9, 1974: Série Agronomia; 35-431678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/17248/11551info:eu-repo/semantics/openAccess2014-04-15T18:57:10Zoai:ojs.seer.sct.embrapa.br:article/17248Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-15T18:57:10Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Variation of pH, specific conductance and N, P, K, Ca and Mg solubility in four flooded soils
Variação do pH, da condutividade elétrica e da disponibilidade dos nutrientes nitrogênio, fósforo, potássio, cálcio e magnésio em quatro solos submetidos à inundação
title Variation of pH, specific conductance and N, P, K, Ca and Mg solubility in four flooded soils
spellingShingle Variation of pH, specific conductance and N, P, K, Ca and Mg solubility in four flooded soils
Moraes, José Francisco V.
rice soils; flooding; soil reduction; soil solution; anaerobic conditions; aerobic conditions; nitrification; denitrification; exchangeable Fe2+ and Mn2+
solos de arroz; inundação; redução do solo; solução do solo; condições anaeróbias; condições aeróbias; nitrificação; desnitrificação; Fe2+ e Mn2+ intercambiável
title_short Variation of pH, specific conductance and N, P, K, Ca and Mg solubility in four flooded soils
title_full Variation of pH, specific conductance and N, P, K, Ca and Mg solubility in four flooded soils
title_fullStr Variation of pH, specific conductance and N, P, K, Ca and Mg solubility in four flooded soils
title_full_unstemmed Variation of pH, specific conductance and N, P, K, Ca and Mg solubility in four flooded soils
title_sort Variation of pH, specific conductance and N, P, K, Ca and Mg solubility in four flooded soils
author Moraes, José Francisco V.
author_facet Moraes, José Francisco V.
Freire, Cláudio José S.
author_role author
author2 Freire, Cláudio José S.
author2_role author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Moraes, José Francisco V.
Freire, Cláudio José S.
dc.subject.por.fl_str_mv rice soils; flooding; soil reduction; soil solution; anaerobic conditions; aerobic conditions; nitrification; denitrification; exchangeable Fe2+ and Mn2+
solos de arroz; inundação; redução do solo; solução do solo; condições anaeróbias; condições aeróbias; nitrificação; desnitrificação; Fe2+ e Mn2+ intercambiável
topic rice soils; flooding; soil reduction; soil solution; anaerobic conditions; aerobic conditions; nitrification; denitrification; exchangeable Fe2+ and Mn2+
solos de arroz; inundação; redução do solo; solução do solo; condições anaeróbias; condições aeróbias; nitrificação; desnitrificação; Fe2+ e Mn2+ intercambiável
description The work discussed in this paper deals with the effects of waterlogging on soil pH, specific conductance and on the concentrations of N, P, K, Ca and Mg in the percolates of four rice soils of Rio Grande do Sul. After flooding, the soil pH increased and the increase was greater in the unfertilized soils than that of the fertilized soils. Flooding increased the specific conductance of the soil percolate by promoting the displacement of the nitrogen, phosphorus, potassium, calcium and magnesium from the soil exchange complex to the soil solution. Almost all nitrogen applied to the soils was lost at the beginning of the experiment. The loss of nitrogen was caused by nitrification and denitrification processes that occur in paddy soils. The phosphorus applied to the soils as fertilizer was fixed at the beginning of the flooding. The fixation on the phosphorus was greater in the Pelotas and Vacacaí soils than that observed in the Formiga and Formiga-Banhado soils. Only after reduction of the soil was the solubility of phosphorus increased.
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/17248
url https://seer.sct.embrapa.br/index.php/pab/article/view/17248
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/17248/11551
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.9, n.9, 1974: Série Agronomia; 35-43
Pesquisa Agropecuária Brasileira; v.9, n.9, 1974: Série Agronomia; 35-43
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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