Potassium fertilization and its residual effect on productivity and quality of potato tubers

Detalhes bibliográficos
Autor(a) principal: Silva, Heider Rodrigo Ferreira
Data de Publicação: 2016
Outros Autores: Fontes, Paulo Cezar Rezende
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/23214
Resumo: The objective of this work was to determine the optimal K dose and its residual effect on maximum yield and quality of potato (Solanum tuberosum) tubers. Experiment 1 was carried out in soil with low K content (38 mg dm‑3), in a randomized complete block design, with four replicates, whose treatments consisted of five K rates – 0, 110, 220, 440, and 880 kg ha‑1 K2O –, as KCl, applied in the grooves in the pre‑planting period. Experiment 2 was carried out in the same location, using the residual content of the fertilizer applied in experiment 1. Potassium fertilization and its residual effect significantly affected the number, yield, and dry matter of tubers. However, high doses of K reduced the dry matter content and the specific gravity of tubers. The residual K content did not affect all components of productivity. The maximum economic efficiency dose was 393.5 kg ha‑1 K2O, which gave 36.2 Mg ha‑1, in experiment 1, and 19.6 Mg ha‑1, in experiment 2, as the maximum yields of commercial tubers.
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spelling Potassium fertilization and its residual effect on productivity and quality of potato tubersAdubação potássica e seu efeito residual sobre a produtividade e a qualidade de tubérculos de batataSolanum tuberosum; fertilization; dry matter; potassium nutritionSolanum tuberosum; fertilização; matéria seca; nutrição potássicaThe objective of this work was to determine the optimal K dose and its residual effect on maximum yield and quality of potato (Solanum tuberosum) tubers. Experiment 1 was carried out in soil with low K content (38 mg dm‑3), in a randomized complete block design, with four replicates, whose treatments consisted of five K rates – 0, 110, 220, 440, and 880 kg ha‑1 K2O –, as KCl, applied in the grooves in the pre‑planting period. Experiment 2 was carried out in the same location, using the residual content of the fertilizer applied in experiment 1. Potassium fertilization and its residual effect significantly affected the number, yield, and dry matter of tubers. However, high doses of K reduced the dry matter content and the specific gravity of tubers. The residual K content did not affect all components of productivity. The maximum economic efficiency dose was 393.5 kg ha‑1 K2O, which gave 36.2 Mg ha‑1, in experiment 1, and 19.6 Mg ha‑1, in experiment 2, as the maximum yields of commercial tubers.O objetivo deste trabalho foi determinar a dose ótima de K e seu efeito residual sobre a produtividade máxima e a qualidade de tubérculos de batata (Solanum tuberosum). O experimento 1 foi realizado em solo com baixo teor de K (38 mg dm-3), em delineamento experimental de blocos ao acaso, com quatro repetições, cujos tratamentos constituíram-se de cinco doses de K – 0, 110, 220, 440 e 880 kg ha-1 de K2O –, na forma de KCl, aplicados em pré‑plantio ao sulco. O experimento 2 foi realizado no mesmo local, com o teor residual do fertilizante aplicado no experimento 1. A fertilização potássica e seu efeito residual influenciaram significativamente o número, a produtividade e a matéria seca dos tubérculos. No entanto, altas doses de K reduziram o teor de matéria seca e a gravidade específica dos tubérculos. O teor residual de K não influenciou todos os componentes de produtividade. A dose de máxima eficiência econômica foi 393,5 kg ha-1 de K2O, que propiciou a máxima produtividade de tubérculos comerciais de 36,2 Mg ha-1, no experimento 1, e de 19,6 Mg ha-1, no experimento 2. Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraCNPq, Conselho Nacional de Desenvolvimento Científico e TecnológicoFapemig, Fundação de Amparo à Pesquisa do Estado de Minas GeraisSilva, Heider Rodrigo FerreiraFontes, Paulo Cezar Rezende2016-09-26info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/23214Pesquisa Agropecuaria Brasileira; v.51, n.7, jul. 2016; 842-848Pesquisa Agropecuária Brasileira; v.51, n.7, jul. 2016; 842-8481678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/23214/13385https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/23214/15353Direitos autorais 2016 Pesquisa Agropecuária Brasileirainfo:eu-repo/semantics/openAccess2016-09-26T18:50:57Zoai:ojs.seer.sct.embrapa.br:article/23214Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2016-09-26T18:50:57Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Potassium fertilization and its residual effect on productivity and quality of potato tubers
Adubação potássica e seu efeito residual sobre a produtividade e a qualidade de tubérculos de batata
title Potassium fertilization and its residual effect on productivity and quality of potato tubers
spellingShingle Potassium fertilization and its residual effect on productivity and quality of potato tubers
Silva, Heider Rodrigo Ferreira
Solanum tuberosum; fertilization; dry matter; potassium nutrition
Solanum tuberosum; fertilização; matéria seca; nutrição potássica
title_short Potassium fertilization and its residual effect on productivity and quality of potato tubers
title_full Potassium fertilization and its residual effect on productivity and quality of potato tubers
title_fullStr Potassium fertilization and its residual effect on productivity and quality of potato tubers
title_full_unstemmed Potassium fertilization and its residual effect on productivity and quality of potato tubers
title_sort Potassium fertilization and its residual effect on productivity and quality of potato tubers
author Silva, Heider Rodrigo Ferreira
author_facet Silva, Heider Rodrigo Ferreira
Fontes, Paulo Cezar Rezende
author_role author
author2 Fontes, Paulo Cezar Rezende
author2_role author
dc.contributor.none.fl_str_mv
CNPq, Conselho Nacional de Desenvolvimento Científico e Tecnológico
Fapemig, Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.contributor.author.fl_str_mv Silva, Heider Rodrigo Ferreira
Fontes, Paulo Cezar Rezende
dc.subject.por.fl_str_mv Solanum tuberosum; fertilization; dry matter; potassium nutrition
Solanum tuberosum; fertilização; matéria seca; nutrição potássica
topic Solanum tuberosum; fertilization; dry matter; potassium nutrition
Solanum tuberosum; fertilização; matéria seca; nutrição potássica
description The objective of this work was to determine the optimal K dose and its residual effect on maximum yield and quality of potato (Solanum tuberosum) tubers. Experiment 1 was carried out in soil with low K content (38 mg dm‑3), in a randomized complete block design, with four replicates, whose treatments consisted of five K rates – 0, 110, 220, 440, and 880 kg ha‑1 K2O –, as KCl, applied in the grooves in the pre‑planting period. Experiment 2 was carried out in the same location, using the residual content of the fertilizer applied in experiment 1. Potassium fertilization and its residual effect significantly affected the number, yield, and dry matter of tubers. However, high doses of K reduced the dry matter content and the specific gravity of tubers. The residual K content did not affect all components of productivity. The maximum economic efficiency dose was 393.5 kg ha‑1 K2O, which gave 36.2 Mg ha‑1, in experiment 1, and 19.6 Mg ha‑1, in experiment 2, as the maximum yields of commercial tubers.
publishDate 2016
dc.date.none.fl_str_mv 2016-09-26
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/23214
url https://seer.sct.embrapa.br/index.php/pab/article/view/23214
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/23214/13385
https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/23214/15353
dc.rights.driver.fl_str_mv Direitos autorais 2016 Pesquisa Agropecuária Brasileira
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Direitos autorais 2016 Pesquisa Agropecuária Brasileira
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.51, n.7, jul. 2016; 842-848
Pesquisa Agropecuária Brasileira; v.51, n.7, jul. 2016; 842-848
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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