Changes in potassium pools in Paraná soils under successive cropping and potassium fertilization
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Semina. Ciências Agrárias (Online) |
Texto Completo: | https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/18998 |
Resumo: | The changes in soil potassium pools under intense cropping and fertilized with potash fertilizer are still little known to the soils of Paraná State. The effects of potassium fertilization and successive cropping on changes in K pools in different soils of Paraná, Brazil, were investigated in this study. Twelve soil samples, collected from the upper layer 0–0.20 m, were fertilized or not with K and subjected to six successive cropping (i.e., soybean, pearl millet, wheat, common beans, soybean and maize). All the crops were grown for 45 days, and at the end of the second, fourth and sixth cropping, the soil from each pot was sampled to determination of the total K, non-exchangeable K, exchangeable K and solution K. The result showed that the soil potassium pools varied widely. Total K concentration ranged from 547 to 15,563 mg kg–1 (4,714 mg kg–1, on average). On the average, structural K, non-exchangeable K, exchangeable K and solution K of the soils constituted 84.0, 11.3, 4.6 and 0.1% of the total K, respectively. Soils differ in the ability to supply potassium to the plants in the short to medium term, due to the wide range of parent material and the degree of soil weathering. When the soils were not fertilized with K, the successive cropping of plants resulted in a continuous process of depletion of non-exchangeable K and exchangeable K pools; however, this depletion was less pronounced in soils with higher potential buffer capacity of K. The concentrations of K non-exchangeable and exchangeable K were increased with the addition of potassium fertilizers, indicating the occurrence of K fixation in soil. After the second cropping, the soil exchangeable K levels remained constant with values of 141 and 36 mg kg–1, respectively, with and without the addition of K fertilizer, reflecting in establishing of a new dynamic equilibrium of K in the soil. |
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Semina. Ciências Agrárias (Online) |
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Changes in potassium pools in Paraná soils under successive cropping and potassium fertilizationAlterações das formas de potássio em solos do Estado do Paraná submetidos à cultivos sucessivos e adubação potássicaPotassium availabilityNon-exchangeable KExchangeable KPotassium supply powerIntense cropping.Disponibilidade de potássioK não-trocávelK trocávelPoder tampão de potássioCultivo intensivo.The changes in soil potassium pools under intense cropping and fertilized with potash fertilizer are still little known to the soils of Paraná State. The effects of potassium fertilization and successive cropping on changes in K pools in different soils of Paraná, Brazil, were investigated in this study. Twelve soil samples, collected from the upper layer 0–0.20 m, were fertilized or not with K and subjected to six successive cropping (i.e., soybean, pearl millet, wheat, common beans, soybean and maize). All the crops were grown for 45 days, and at the end of the second, fourth and sixth cropping, the soil from each pot was sampled to determination of the total K, non-exchangeable K, exchangeable K and solution K. The result showed that the soil potassium pools varied widely. Total K concentration ranged from 547 to 15,563 mg kg–1 (4,714 mg kg–1, on average). On the average, structural K, non-exchangeable K, exchangeable K and solution K of the soils constituted 84.0, 11.3, 4.6 and 0.1% of the total K, respectively. Soils differ in the ability to supply potassium to the plants in the short to medium term, due to the wide range of parent material and the degree of soil weathering. When the soils were not fertilized with K, the successive cropping of plants resulted in a continuous process of depletion of non-exchangeable K and exchangeable K pools; however, this depletion was less pronounced in soils with higher potential buffer capacity of K. The concentrations of K non-exchangeable and exchangeable K were increased with the addition of potassium fertilizers, indicating the occurrence of K fixation in soil. After the second cropping, the soil exchangeable K levels remained constant with values of 141 and 36 mg kg–1, respectively, with and without the addition of K fertilizer, reflecting in establishing of a new dynamic equilibrium of K in the soil. As alterações nas formas químicas de potássio (K) em solos cultivados e submetidos à fertilização potássica, ainda, são pouco conhecidas para os solos do Estado do Paraná. Neste estudo, os efeitos de cultivos sucessivos e da fertilização potássica nas alterações das formas de K foram estudados em solos com diferentes características físico-químicas do Estado do Paraná. Amostras de 12 solos coletadas da camada de 0–20 cm de profundidade, foram submetidas à adição ou não de fertilizante potássico e a seis cultivos sucessivos de plantas (soja, milheto, trigo, feijão, soja e milho). Em todos os cultivos as plantas foram cultivadas por um período de 40 dias. Após o segundo, quarto e sexto cultivo foram coletadas amostras de solos para a determinação dos teores de K total, K não-trocável, K trocável e K na solução. Os solos diferenciaram-se na capacidade de suprir K às plantas a curto e médio prazo. A absorção de K pelas plantas em cultivos sucessivos, sem a adição de fertilizante potássico, desencadeou um processo contínuo de exaustão de formas não-trocáveis e trocáveis de K no solo, sendo menos acentuada nos solos com maior poder tampão de potássio. Os teores de K não-trocável e K trocável aumentaram com a adição de fertilizantes potássicos, indicando fixação de K pelo solo. Após o segundo cultivo de plantas os teores de K trocável mantiveram-se constantes com valores médios de 141 mg kg–1 (com a adição de K) e 36 mg kg–1 (sem adição de K), expressando um novo equilíbrio dinâmico do K no solo. UEL2015-12-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionScientific researchPesquisa Científicaapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/1899810.5433/1679-0359.2015v36n6Supl2p4083Semina: Ciências Agrárias; Vol. 36 No. 6Supl2 (2015); 4083-4098Semina: Ciências Agrárias; v. 36 n. 6Supl2 (2015); 4083-40981679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/18998/17529http://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessSteiner, FabioLana, Maria do CarmoZoz, TiagoFrandoloso, Jucenei Fernando2022-12-02T14:29:01Zoai:ojs.pkp.sfu.ca:article/18998Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2022-12-02T14:29:01Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
dc.title.none.fl_str_mv |
Changes in potassium pools in Paraná soils under successive cropping and potassium fertilization Alterações das formas de potássio em solos do Estado do Paraná submetidos à cultivos sucessivos e adubação potássica |
title |
Changes in potassium pools in Paraná soils under successive cropping and potassium fertilization |
spellingShingle |
Changes in potassium pools in Paraná soils under successive cropping and potassium fertilization Steiner, Fabio Potassium availability Non-exchangeable K Exchangeable K Potassium supply power Intense cropping. Disponibilidade de potássio K não-trocável K trocável Poder tampão de potássio Cultivo intensivo. |
title_short |
Changes in potassium pools in Paraná soils under successive cropping and potassium fertilization |
title_full |
Changes in potassium pools in Paraná soils under successive cropping and potassium fertilization |
title_fullStr |
Changes in potassium pools in Paraná soils under successive cropping and potassium fertilization |
title_full_unstemmed |
Changes in potassium pools in Paraná soils under successive cropping and potassium fertilization |
title_sort |
Changes in potassium pools in Paraná soils under successive cropping and potassium fertilization |
author |
Steiner, Fabio |
author_facet |
Steiner, Fabio Lana, Maria do Carmo Zoz, Tiago Frandoloso, Jucenei Fernando |
author_role |
author |
author2 |
Lana, Maria do Carmo Zoz, Tiago Frandoloso, Jucenei Fernando |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Steiner, Fabio Lana, Maria do Carmo Zoz, Tiago Frandoloso, Jucenei Fernando |
dc.subject.por.fl_str_mv |
Potassium availability Non-exchangeable K Exchangeable K Potassium supply power Intense cropping. Disponibilidade de potássio K não-trocável K trocável Poder tampão de potássio Cultivo intensivo. |
topic |
Potassium availability Non-exchangeable K Exchangeable K Potassium supply power Intense cropping. Disponibilidade de potássio K não-trocável K trocável Poder tampão de potássio Cultivo intensivo. |
description |
The changes in soil potassium pools under intense cropping and fertilized with potash fertilizer are still little known to the soils of Paraná State. The effects of potassium fertilization and successive cropping on changes in K pools in different soils of Paraná, Brazil, were investigated in this study. Twelve soil samples, collected from the upper layer 0–0.20 m, were fertilized or not with K and subjected to six successive cropping (i.e., soybean, pearl millet, wheat, common beans, soybean and maize). All the crops were grown for 45 days, and at the end of the second, fourth and sixth cropping, the soil from each pot was sampled to determination of the total K, non-exchangeable K, exchangeable K and solution K. The result showed that the soil potassium pools varied widely. Total K concentration ranged from 547 to 15,563 mg kg–1 (4,714 mg kg–1, on average). On the average, structural K, non-exchangeable K, exchangeable K and solution K of the soils constituted 84.0, 11.3, 4.6 and 0.1% of the total K, respectively. Soils differ in the ability to supply potassium to the plants in the short to medium term, due to the wide range of parent material and the degree of soil weathering. When the soils were not fertilized with K, the successive cropping of plants resulted in a continuous process of depletion of non-exchangeable K and exchangeable K pools; however, this depletion was less pronounced in soils with higher potential buffer capacity of K. The concentrations of K non-exchangeable and exchangeable K were increased with the addition of potassium fertilizers, indicating the occurrence of K fixation in soil. After the second cropping, the soil exchangeable K levels remained constant with values of 141 and 36 mg kg–1, respectively, with and without the addition of K fertilizer, reflecting in establishing of a new dynamic equilibrium of K in the soil. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-12-16 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Scientific research Pesquisa Científica |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/18998 10.5433/1679-0359.2015v36n6Supl2p4083 |
url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/18998 |
identifier_str_mv |
10.5433/1679-0359.2015v36n6Supl2p4083 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/18998/17529 |
dc.rights.driver.fl_str_mv |
http://creativecommons.org/licenses/by-nc/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by-nc/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
UEL |
publisher.none.fl_str_mv |
UEL |
dc.source.none.fl_str_mv |
Semina: Ciências Agrárias; Vol. 36 No. 6Supl2 (2015); 4083-4098 Semina: Ciências Agrárias; v. 36 n. 6Supl2 (2015); 4083-4098 1679-0359 1676-546X reponame:Semina. Ciências Agrárias (Online) instname:Universidade Estadual de Londrina (UEL) instacron:UEL |
instname_str |
Universidade Estadual de Londrina (UEL) |
instacron_str |
UEL |
institution |
UEL |
reponame_str |
Semina. Ciências Agrárias (Online) |
collection |
Semina. Ciências Agrárias (Online) |
repository.name.fl_str_mv |
Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL) |
repository.mail.fl_str_mv |
semina.agrarias@uel.br |
_version_ |
1799306072636260352 |