Effect of potassium fertilization on sweet potato cultivation

Detalhes bibliográficos
Autor(a) principal: Higashikawa, Fábio Satoshi
Data de Publicação: 2024
Outros Autores: Kurtz, Claudinei, Alves, Daniel Pedrosa, Wamser, Gerson Henrique, Manfio, Candida Elisa
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Pesquisa Agropecuária Tropical (Online)
Texto Completo: https://revistas.ufg.br/pat/article/view/78455
Resumo: The sweet potato yield in Brazil remains significantly below the crop potential, primarily due to either the absence or inadequate application of fertilizers. This study aimed to assess the sweet potato yield, soil potassium availability, nutrient uptake in shoots, storage roots and whole plant, as well as the correlation between nutrients, with increasing rates (0, 50, 100, 200 and 350 kg ha-1) of K2O, in Humic Cambisol. After harvesting, the total and marketable yield of storage roots, soil available K levels, and nutrient contents in shoots, storage roots and whole plant were assessed. The maximum efficiency was achieved at 229 kg ha-1 of K2O, while the economically optimum rate was observed at 171 kg ha-1 of K2O. The sweet potato’s response to the potassium fertilizer application in Humic Cambisol tends to diminish if the available K content exceeds 146 mg dm-3. The use of KCl as a K source may induce a reduced sulfur absorption, probably due to the antagonistic effect between Cl- and SO42-. KEYWORDS: Ipomoea batatas (L.) Lam., critical potassium content in the soil, storage roots.
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spelling Effect of potassium fertilization on sweet potato cultivationEfeito de fertilização potássica no cultivo de batata-doceThe sweet potato yield in Brazil remains significantly below the crop potential, primarily due to either the absence or inadequate application of fertilizers. This study aimed to assess the sweet potato yield, soil potassium availability, nutrient uptake in shoots, storage roots and whole plant, as well as the correlation between nutrients, with increasing rates (0, 50, 100, 200 and 350 kg ha-1) of K2O, in Humic Cambisol. After harvesting, the total and marketable yield of storage roots, soil available K levels, and nutrient contents in shoots, storage roots and whole plant were assessed. The maximum efficiency was achieved at 229 kg ha-1 of K2O, while the economically optimum rate was observed at 171 kg ha-1 of K2O. The sweet potato’s response to the potassium fertilizer application in Humic Cambisol tends to diminish if the available K content exceeds 146 mg dm-3. The use of KCl as a K source may induce a reduced sulfur absorption, probably due to the antagonistic effect between Cl- and SO42-. KEYWORDS: Ipomoea batatas (L.) Lam., critical potassium content in the soil, storage roots.O rendimento de batata-doce no Brasil está bem abaixo do potencial da cultura, sendo uma das razões a ausência ou adubação inadequada. Objetivou-se avaliar o rendimento de batata-doce, disponibilidade de potássio no solo, absorção de nutrientes pela parte aérea, raiz tuberosa e planta inteira, e a correlação entre nutrientes, em função de doses crescentes (0, 50, 100, 200 e 350 kg ha-1) de K2O, em Cambissolo Húmico. Após a colheita, foram avaliados o rendimento total e comercial das raízes tuberosas, o teor de K disponível no solo e os teores de nutrientes na parte aérea, raízes tuberosas e planta inteira. A máxima eficiência foi obtida com a dose de 229 kg ha-1 de K2O, e a máxima eficiência econômica com a dose de 171 kg ha-1 de K2O. A resposta da batata-doce à aplicação de adubação potássica em Cambissolo Húmico tende a diminuir se o teor de K disponível for superior a 146 mg dm-3. O uso de KCl como fonte de K pode induzir menor absorção de enxofre, provavelmente em função do efeito antagônico entre o Cl- e o SO42-. PALAVRAS-CHAVE: Ipomoea batatas (L.) Lam., teor crítico de potássio no solo, raízes tuberosas.Escola de Agronomia - Universidade Federal de Goiás2024-04-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionAvaliado por paresapplication/pdfhttps://revistas.ufg.br/pat/article/view/78455Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; v. 54 (2024); e78455Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); v. 54 (2024); e78455Pesquisa Agropecuária Tropical; v. 54 (2024); e784551983-4063reponame:Pesquisa Agropecuária Tropical (Online)instname:Universidade Federal de Goiás (UFG)instacron:UFGenghttps://revistas.ufg.br/pat/article/view/78455/40927Copyright (c) 2024 Pesquisa Agropecuária Tropicalinfo:eu-repo/semantics/openAccessHigashikawa, Fábio SatoshiKurtz, ClaudineiAlves, Daniel PedrosaWamser, Gerson HenriqueManfio, Candida Elisa2024-04-09T19:31:43Zoai:ojs.revistas.ufg.br:article/78455Revistahttps://revistas.ufg.br/patPUBhttps://revistas.ufg.br/pat/oaiaseleguini.pat@gmail.com||mgoes@agro.ufg.br1983-40631517-6398opendoar:2024-05-21T19:56:41.252429Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG)true
dc.title.none.fl_str_mv Effect of potassium fertilization on sweet potato cultivation
Efeito de fertilização potássica no cultivo de batata-doce
title Effect of potassium fertilization on sweet potato cultivation
spellingShingle Effect of potassium fertilization on sweet potato cultivation
Higashikawa, Fábio Satoshi
title_short Effect of potassium fertilization on sweet potato cultivation
title_full Effect of potassium fertilization on sweet potato cultivation
title_fullStr Effect of potassium fertilization on sweet potato cultivation
title_full_unstemmed Effect of potassium fertilization on sweet potato cultivation
title_sort Effect of potassium fertilization on sweet potato cultivation
author Higashikawa, Fábio Satoshi
author_facet Higashikawa, Fábio Satoshi
Kurtz, Claudinei
Alves, Daniel Pedrosa
Wamser, Gerson Henrique
Manfio, Candida Elisa
author_role author
author2 Kurtz, Claudinei
Alves, Daniel Pedrosa
Wamser, Gerson Henrique
Manfio, Candida Elisa
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Higashikawa, Fábio Satoshi
Kurtz, Claudinei
Alves, Daniel Pedrosa
Wamser, Gerson Henrique
Manfio, Candida Elisa
description The sweet potato yield in Brazil remains significantly below the crop potential, primarily due to either the absence or inadequate application of fertilizers. This study aimed to assess the sweet potato yield, soil potassium availability, nutrient uptake in shoots, storage roots and whole plant, as well as the correlation between nutrients, with increasing rates (0, 50, 100, 200 and 350 kg ha-1) of K2O, in Humic Cambisol. After harvesting, the total and marketable yield of storage roots, soil available K levels, and nutrient contents in shoots, storage roots and whole plant were assessed. The maximum efficiency was achieved at 229 kg ha-1 of K2O, while the economically optimum rate was observed at 171 kg ha-1 of K2O. The sweet potato’s response to the potassium fertilizer application in Humic Cambisol tends to diminish if the available K content exceeds 146 mg dm-3. The use of KCl as a K source may induce a reduced sulfur absorption, probably due to the antagonistic effect between Cl- and SO42-. KEYWORDS: Ipomoea batatas (L.) Lam., critical potassium content in the soil, storage roots.
publishDate 2024
dc.date.none.fl_str_mv 2024-04-09
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Avaliado por pares
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://revistas.ufg.br/pat/article/view/78455
url https://revistas.ufg.br/pat/article/view/78455
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://revistas.ufg.br/pat/article/view/78455/40927
dc.rights.driver.fl_str_mv Copyright (c) 2024 Pesquisa Agropecuária Tropical
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2024 Pesquisa Agropecuária Tropical
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Escola de Agronomia - Universidade Federal de Goiás
publisher.none.fl_str_mv Escola de Agronomia - Universidade Federal de Goiás
dc.source.none.fl_str_mv Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; v. 54 (2024); e78455
Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); v. 54 (2024); e78455
Pesquisa Agropecuária Tropical; v. 54 (2024); e78455
1983-4063
reponame:Pesquisa Agropecuária Tropical (Online)
instname:Universidade Federal de Goiás (UFG)
instacron:UFG
instname_str Universidade Federal de Goiás (UFG)
instacron_str UFG
institution UFG
reponame_str Pesquisa Agropecuária Tropical (Online)
collection Pesquisa Agropecuária Tropical (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG)
repository.mail.fl_str_mv aseleguini.pat@gmail.com||mgoes@agro.ufg.br
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