Potassium in size fractions of an Oxisol - DOI: 10.4025/actasciagron.v30i4.5321
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Acta Scientiarum. Agronomy (Online) |
Texto Completo: | http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5321 |
Resumo: | The aim of this work was to study the distribution of non-exchangeable forms of potassium in different size fractions of an Oxisol, cultivated with banana for two years in plots with and without irrigation (main plot) and varying potassium levels (0, 300, 600 and 900 kg ha-1 of K2O) (sub-plots), in a randomized split-plot block design. It was verified that the highest K levels (exchangeable and non-exchangeable forms) derived from the finest particle size fractions: clay and silt. The K moving trough soil layers was associated with the presence and action of percolating water in the soil profile. The role of irrigation was significant in the distribution of the different K forms in the soil. Irrigated plots showed the best distribution of K from the surface down to 60 cm of depth. Statistical significant effects of the doses of K on the non-exchangeable K forms could be explained by the translocation of K from soil solution to soil exchange complex, and from that to strongly retained forms. Amounts of K absorbed by the plants were greater than the variation of exchangeable K content, suggesting that non-exchangeable forms are being taken up. |
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Potassium in size fractions of an Oxisol - DOI: 10.4025/actasciagron.v30i4.5321Potássio nas frações texturais de um Latossolo - DOI: 10.4025/actasciagron.v30i4.5321irrigationclaysiltsandexchangeable Knon-exchangeable KirrigaçãoargilasilteareiaK-trocávelK não-trocável.The aim of this work was to study the distribution of non-exchangeable forms of potassium in different size fractions of an Oxisol, cultivated with banana for two years in plots with and without irrigation (main plot) and varying potassium levels (0, 300, 600 and 900 kg ha-1 of K2O) (sub-plots), in a randomized split-plot block design. It was verified that the highest K levels (exchangeable and non-exchangeable forms) derived from the finest particle size fractions: clay and silt. The K moving trough soil layers was associated with the presence and action of percolating water in the soil profile. The role of irrigation was significant in the distribution of the different K forms in the soil. Irrigated plots showed the best distribution of K from the surface down to 60 cm of depth. Statistical significant effects of the doses of K on the non-exchangeable K forms could be explained by the translocation of K from soil solution to soil exchange complex, and from that to strongly retained forms. Amounts of K absorbed by the plants were greater than the variation of exchangeable K content, suggesting that non-exchangeable forms are being taken up.Este trabalho teve por objetivo estudar a distribuição de formas não-trocáveis de potássio, em frações texturais de um Latossolo cultivado com bananeira, por dois anos, em dois regimes hídricos (parcelas principais), e doses de potássio (0, 300, 600 e 900 kg há-1) (subparcelas), seguindo delineamento em blocos casualizados, com parcelas subdivididas. Verificou-se que os maiores teores de potássio (trocável e não-trocável) estão contidos nas frações mais finas: argila e silte. Neste sistema de cultivo e com a aplicação dos adubos na superfície, a movimentação do nutriente, nas camadas estudadas, esteve associada à presença e movimentação da água no perfil do solo. A irrigação desempenhou papel relevante na distribuição das formas do K. Nas parcelas irrigadas, houve mobilização do K até 60 cm de profundidade. Houve efeitos significativos das doses de potássio nas formas não-trocáveis do nutriente, evidenciando a migração do potássio da solução do solo para o complexo de troca e deste para formas mais fortemente retidas. A quantidade de potássio exportada pela planta foi maior que a variação dos teores trocáveis, indicando que formas não-trocáveis estariam sendo aproveitadas pelas plantas.Universidade Estadual de Maringá2008-10-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/532110.4025/actasciagron.v30i4.5321Acta Scientiarum. Agronomy; Vol 30 No 4 (2008); 581-587Acta Scientiarum. Agronomy; v. 30 n. 4 (2008); 581-5871807-86211679-9275reponame:Acta Scientiarum. Agronomy (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMporhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5321/5321Chiba, Marcio KoitiNatale, WilliamCruz, Mara Cristina Pessôa daTeixeira, Luiz Antonio JunqueiraCenturion, José Fredericoinfo:eu-repo/semantics/openAccess2022-11-23T18:38:10Zoai:periodicos.uem.br/ojs:article/5321Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgronPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/oaiactaagron@uem.br||actaagron@uem.br|| edamasio@uem.br1807-86211679-9275opendoar:2022-11-23T18:38:10Acta Scientiarum. Agronomy (Online) - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Potassium in size fractions of an Oxisol - DOI: 10.4025/actasciagron.v30i4.5321 Potássio nas frações texturais de um Latossolo - DOI: 10.4025/actasciagron.v30i4.5321 |
title |
Potassium in size fractions of an Oxisol - DOI: 10.4025/actasciagron.v30i4.5321 |
spellingShingle |
Potassium in size fractions of an Oxisol - DOI: 10.4025/actasciagron.v30i4.5321 Chiba, Marcio Koiti irrigation clay silt sand exchangeable K non-exchangeable K irrigação argila silte areia K-trocável K não-trocável. |
title_short |
Potassium in size fractions of an Oxisol - DOI: 10.4025/actasciagron.v30i4.5321 |
title_full |
Potassium in size fractions of an Oxisol - DOI: 10.4025/actasciagron.v30i4.5321 |
title_fullStr |
Potassium in size fractions of an Oxisol - DOI: 10.4025/actasciagron.v30i4.5321 |
title_full_unstemmed |
Potassium in size fractions of an Oxisol - DOI: 10.4025/actasciagron.v30i4.5321 |
title_sort |
Potassium in size fractions of an Oxisol - DOI: 10.4025/actasciagron.v30i4.5321 |
author |
Chiba, Marcio Koiti |
author_facet |
Chiba, Marcio Koiti Natale, William Cruz, Mara Cristina Pessôa da Teixeira, Luiz Antonio Junqueira Centurion, José Frederico |
author_role |
author |
author2 |
Natale, William Cruz, Mara Cristina Pessôa da Teixeira, Luiz Antonio Junqueira Centurion, José Frederico |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Chiba, Marcio Koiti Natale, William Cruz, Mara Cristina Pessôa da Teixeira, Luiz Antonio Junqueira Centurion, José Frederico |
dc.subject.por.fl_str_mv |
irrigation clay silt sand exchangeable K non-exchangeable K irrigação argila silte areia K-trocável K não-trocável. |
topic |
irrigation clay silt sand exchangeable K non-exchangeable K irrigação argila silte areia K-trocável K não-trocável. |
description |
The aim of this work was to study the distribution of non-exchangeable forms of potassium in different size fractions of an Oxisol, cultivated with banana for two years in plots with and without irrigation (main plot) and varying potassium levels (0, 300, 600 and 900 kg ha-1 of K2O) (sub-plots), in a randomized split-plot block design. It was verified that the highest K levels (exchangeable and non-exchangeable forms) derived from the finest particle size fractions: clay and silt. The K moving trough soil layers was associated with the presence and action of percolating water in the soil profile. The role of irrigation was significant in the distribution of the different K forms in the soil. Irrigated plots showed the best distribution of K from the surface down to 60 cm of depth. Statistical significant effects of the doses of K on the non-exchangeable K forms could be explained by the translocation of K from soil solution to soil exchange complex, and from that to strongly retained forms. Amounts of K absorbed by the plants were greater than the variation of exchangeable K content, suggesting that non-exchangeable forms are being taken up. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-10-06 |
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 |
http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5321 10.4025/actasciagron.v30i4.5321 |
url |
http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5321 |
identifier_str_mv |
10.4025/actasciagron.v30i4.5321 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5321/5321 |
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 |
Universidade Estadual de Maringá |
publisher.none.fl_str_mv |
Universidade Estadual de Maringá |
dc.source.none.fl_str_mv |
Acta Scientiarum. Agronomy; Vol 30 No 4 (2008); 581-587 Acta Scientiarum. Agronomy; v. 30 n. 4 (2008); 581-587 1807-8621 1679-9275 reponame:Acta Scientiarum. Agronomy (Online) instname:Universidade Estadual de Maringá (UEM) instacron:UEM |
instname_str |
Universidade Estadual de Maringá (UEM) |
instacron_str |
UEM |
institution |
UEM |
reponame_str |
Acta Scientiarum. Agronomy (Online) |
collection |
Acta Scientiarum. Agronomy (Online) |
repository.name.fl_str_mv |
Acta Scientiarum. Agronomy (Online) - Universidade Estadual de Maringá (UEM) |
repository.mail.fl_str_mv |
actaagron@uem.br||actaagron@uem.br|| edamasio@uem.br |
_version_ |
1799305907093372928 |