Growth and yield of sweet potato in response to the application of nitrogen rates and paclobutrazol

Detalhes bibliográficos
Autor(a) principal: Ribeiro,Nathalia Pereira
Data de Publicação: 2021
Outros Autores: Fernandes,Adalton Mazetti, Silva,Rudieli Machado da, Pelvine,Raíra Andrade, Assunção,Natália Silva
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Bragantia
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052021000100236
Resumo: ABSTRACT The excess of nitrogen (N) causes the overgrowth of sweet potato foliage, increasing the self-shading and reducing the root yield. Therefore, a combined N and paclobutrazol (PBZ) application can reduce the vegetative overgrowth and benefit the sweet potato yield. The purpose of this study was to evaluate the plant growth, yield, uptake and removal of N by sweet potato plants fertilized with N and treated with PBZ during two planting seasons. The treatments consisted of four N rates (0, 50, 100 and 200 kg·ha–1), three forms of PBZ application (PBZ-10: PBZ applied at 10 days after side-dressing N fertilization [DASNF]; PBZ-25: PBZ applied at 25 DASNF, and PBZ-10 + 25: PBZ applied at 10 plus 25 DASNF), and a control (without PBZ application). Paclobutrazol application temporarily reduced the length of the main branches of sweet potato planted in the rainy season, but it did not reduce the shoot biomass of plants in both planting seasons. A single application of PBZ at 10 DASNF increased the yield of fresh storage roots in the two planting seasons, but, during the rainy season, the increases were greater when two applications were carried out. The application of 50 kg·ha–1 N in the rainy season was sufficient to reach the maximum yield of fresh storage roots, but, in the dry season, the N fertilization increased the N uptake without benefiting the root yield.
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spelling Growth and yield of sweet potato in response to the application of nitrogen rates and paclobutrazolnitrogen uptaketriazolegibberellin inhibitorplanting seasonsIpomoea batatas (L)ABSTRACT The excess of nitrogen (N) causes the overgrowth of sweet potato foliage, increasing the self-shading and reducing the root yield. Therefore, a combined N and paclobutrazol (PBZ) application can reduce the vegetative overgrowth and benefit the sweet potato yield. The purpose of this study was to evaluate the plant growth, yield, uptake and removal of N by sweet potato plants fertilized with N and treated with PBZ during two planting seasons. The treatments consisted of four N rates (0, 50, 100 and 200 kg·ha–1), three forms of PBZ application (PBZ-10: PBZ applied at 10 days after side-dressing N fertilization [DASNF]; PBZ-25: PBZ applied at 25 DASNF, and PBZ-10 + 25: PBZ applied at 10 plus 25 DASNF), and a control (without PBZ application). Paclobutrazol application temporarily reduced the length of the main branches of sweet potato planted in the rainy season, but it did not reduce the shoot biomass of plants in both planting seasons. A single application of PBZ at 10 DASNF increased the yield of fresh storage roots in the two planting seasons, but, during the rainy season, the increases were greater when two applications were carried out. The application of 50 kg·ha–1 N in the rainy season was sufficient to reach the maximum yield of fresh storage roots, but, in the dry season, the N fertilization increased the N uptake without benefiting the root yield.Instituto Agronômico de Campinas2021-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052021000100236Bragantia v.80 2021reponame:Bragantiainstname:Instituto Agronômico de Campinas (IAC)instacron:IAC10.1590/1678-4499.20200447info:eu-repo/semantics/openAccessRibeiro,Nathalia PereiraFernandes,Adalton MazettiSilva,Rudieli Machado daPelvine,Raíra AndradeAssunção,Natália Silvaeng2021-06-17T00:00:00Zoai:scielo:S0006-87052021000100236Revistahttps://www.scielo.br/j/brag/https://old.scielo.br/oai/scielo-oai.phpbragantia@iac.sp.gov.br||bragantia@iac.sp.gov.br1678-44990006-8705opendoar:2021-06-17T00:00Bragantia - Instituto Agronômico de Campinas (IAC)false
dc.title.none.fl_str_mv Growth and yield of sweet potato in response to the application of nitrogen rates and paclobutrazol
title Growth and yield of sweet potato in response to the application of nitrogen rates and paclobutrazol
spellingShingle Growth and yield of sweet potato in response to the application of nitrogen rates and paclobutrazol
Ribeiro,Nathalia Pereira
nitrogen uptake
triazole
gibberellin inhibitor
planting seasons
Ipomoea batatas (L)
title_short Growth and yield of sweet potato in response to the application of nitrogen rates and paclobutrazol
title_full Growth and yield of sweet potato in response to the application of nitrogen rates and paclobutrazol
title_fullStr Growth and yield of sweet potato in response to the application of nitrogen rates and paclobutrazol
title_full_unstemmed Growth and yield of sweet potato in response to the application of nitrogen rates and paclobutrazol
title_sort Growth and yield of sweet potato in response to the application of nitrogen rates and paclobutrazol
author Ribeiro,Nathalia Pereira
author_facet Ribeiro,Nathalia Pereira
Fernandes,Adalton Mazetti
Silva,Rudieli Machado da
Pelvine,Raíra Andrade
Assunção,Natália Silva
author_role author
author2 Fernandes,Adalton Mazetti
Silva,Rudieli Machado da
Pelvine,Raíra Andrade
Assunção,Natália Silva
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Ribeiro,Nathalia Pereira
Fernandes,Adalton Mazetti
Silva,Rudieli Machado da
Pelvine,Raíra Andrade
Assunção,Natália Silva
dc.subject.por.fl_str_mv nitrogen uptake
triazole
gibberellin inhibitor
planting seasons
Ipomoea batatas (L)
topic nitrogen uptake
triazole
gibberellin inhibitor
planting seasons
Ipomoea batatas (L)
description ABSTRACT The excess of nitrogen (N) causes the overgrowth of sweet potato foliage, increasing the self-shading and reducing the root yield. Therefore, a combined N and paclobutrazol (PBZ) application can reduce the vegetative overgrowth and benefit the sweet potato yield. The purpose of this study was to evaluate the plant growth, yield, uptake and removal of N by sweet potato plants fertilized with N and treated with PBZ during two planting seasons. The treatments consisted of four N rates (0, 50, 100 and 200 kg·ha–1), three forms of PBZ application (PBZ-10: PBZ applied at 10 days after side-dressing N fertilization [DASNF]; PBZ-25: PBZ applied at 25 DASNF, and PBZ-10 + 25: PBZ applied at 10 plus 25 DASNF), and a control (without PBZ application). Paclobutrazol application temporarily reduced the length of the main branches of sweet potato planted in the rainy season, but it did not reduce the shoot biomass of plants in both planting seasons. A single application of PBZ at 10 DASNF increased the yield of fresh storage roots in the two planting seasons, but, during the rainy season, the increases were greater when two applications were carried out. The application of 50 kg·ha–1 N in the rainy season was sufficient to reach the maximum yield of fresh storage roots, but, in the dry season, the N fertilization increased the N uptake without benefiting the root yield.
publishDate 2021
dc.date.none.fl_str_mv 2021-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052021000100236
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052021000100236
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1678-4499.20200447
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Instituto Agronômico de Campinas
publisher.none.fl_str_mv Instituto Agronômico de Campinas
dc.source.none.fl_str_mv Bragantia v.80 2021
reponame:Bragantia
instname:Instituto Agronômico de Campinas (IAC)
instacron:IAC
instname_str Instituto Agronômico de Campinas (IAC)
instacron_str IAC
institution IAC
reponame_str Bragantia
collection Bragantia
repository.name.fl_str_mv Bragantia - Instituto Agronômico de Campinas (IAC)
repository.mail.fl_str_mv bragantia@iac.sp.gov.br||bragantia@iac.sp.gov.br
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