Potato morphology and dry matter partition in response to sampling time and K levels

Detalhes bibliográficos
Autor(a) principal: Junior, Roberto dos Anjos Reis
Data de Publicação: 1999
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/5252
Resumo: This study was conducted in order to evaluate potato (Solanum tuberosum L.) morphology and dry matter partition in response to sampling time, K levels and its residue. Six K levels (0, 60, 120, 240, 480 and 960 kg K2O ha-1) were applied in the field as potassium sulfate, in randomized blocks design, repeated four times. Baraka potato tubers were seeded spaced 0.8 x 0.3 m. Plants were sampled at 20 and 48 days after its emergence (DAE) to estimate leaf area, stem length, number and fresh and dry matter yield of leaf, stem and tuber, and dry matter content of leaf and stem. Only stem length increased with K fertilization, resulting in smaller overshadow of plant. In the first experiment, at 20 DAE, potato was presenting, in media, 42 leaves, three stems, 5,389 cm2 of leaf area, 157.1 and 216.4 g of fresh matter of stem and leaf, respectively, and 6.2 and 9.2% of dry matter content of stem and leaf, respectively.
id EMBRAPA-4_a5e120f449a97f78ad570433ee0fea1d
oai_identifier_str oai:ojs.seer.sct.embrapa.br:article/5252
network_acronym_str EMBRAPA-4
network_name_str Pesquisa Agropecuária Brasileira (Online)
repository_id_str
spelling Potato morphology and dry matter partition in response to sampling time and K levelsMorfologia e partição de assimilados na batateira em função de época de amostragem e de doses de potássioSolanum tuberosum ;mineral nutrition; fresh matter yield; dry matter yieldSolanum tuberosum; nutrição mineral; produção de matéria fresca; produção de matéria secaThis study was conducted in order to evaluate potato (Solanum tuberosum L.) morphology and dry matter partition in response to sampling time, K levels and its residue. Six K levels (0, 60, 120, 240, 480 and 960 kg K2O ha-1) were applied in the field as potassium sulfate, in randomized blocks design, repeated four times. Baraka potato tubers were seeded spaced 0.8 x 0.3 m. Plants were sampled at 20 and 48 days after its emergence (DAE) to estimate leaf area, stem length, number and fresh and dry matter yield of leaf, stem and tuber, and dry matter content of leaf and stem. Only stem length increased with K fertilization, resulting in smaller overshadow of plant. In the first experiment, at 20 DAE, potato was presenting, in media, 42 leaves, three stems, 5,389 cm2 of leaf area, 157.1 and 216.4 g of fresh matter of stem and leaf, respectively, and 6.2 and 9.2% of dry matter content of stem and leaf, respectively.Com o objetivo de avaliar o efeito de época de amostragem e da adubação potássica sobre a morfologia e partição de assimilados na batateira (Solanum tuberosum L.), foram realizados dois experimentos no campo: o primeiro para avaliar o efeito de doses da adubação potássica e o segundo para avaliação do seu efeito residual. Foram aplicadas seis doses de K no campo (0, 60, 120, 240, 480 e 960 kg de K2O ha-1) na forma de sulfato de potássio, em delineamento de blocos casualizados, com quatro repetições. Tubérculos da cultivar Baraka, uniformemente brotados, foram plantados em espaçamento 0,8 x 0,3 m. Amostraram-se plantas aos 20 e 48 dias após emergência (DAE) para avaliação de área foliar, comprimento de caule, números e produções de matéria fresca e seca de folha, caule e tubérculo e teores de matéria seca de folha e caule. Apenas o comprimento de caule aumentou com as doses de K, resultando em menor sombreamento da batateira. No primeiro experimento, aos 20 DAE, a batateira apresentava, em média, 42 folhas, três hastes, 5.389 cm2 de área foliar, 157,1 e 216,4 g de matéria fresca de caule e de folha, respectivamente, e 6,2 e 9,2% de teor de matéria seca de caule e de folha, respectivamente.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraJunior, Roberto dos Anjos ReisFontes, Paulo Cezar Rezende1999-05-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/5252Pesquisa Agropecuaria Brasileira; v.34, n.5, maio 1999; 795-799Pesquisa Agropecuária Brasileira; v.34, n.5, maio 1999; 795-7991678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/5252/2444info:eu-repo/semantics/openAccess2010-06-30T12:13:01Zoai:ojs.seer.sct.embrapa.br:article/5252Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2010-06-30T12:13:01Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Potato morphology and dry matter partition in response to sampling time and K levels
Morfologia e partição de assimilados na batateira em função de época de amostragem e de doses de potássio
title Potato morphology and dry matter partition in response to sampling time and K levels
spellingShingle Potato morphology and dry matter partition in response to sampling time and K levels
Junior, Roberto dos Anjos Reis
Solanum tuberosum ;mineral nutrition; fresh matter yield; dry matter yield
Solanum tuberosum; nutrição mineral; produção de matéria fresca; produção de matéria seca
title_short Potato morphology and dry matter partition in response to sampling time and K levels
title_full Potato morphology and dry matter partition in response to sampling time and K levels
title_fullStr Potato morphology and dry matter partition in response to sampling time and K levels
title_full_unstemmed Potato morphology and dry matter partition in response to sampling time and K levels
title_sort Potato morphology and dry matter partition in response to sampling time and K levels
author Junior, Roberto dos Anjos Reis
author_facet Junior, Roberto dos Anjos Reis
Fontes, Paulo Cezar Rezende
author_role author
author2 Fontes, Paulo Cezar Rezende
author2_role author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Junior, Roberto dos Anjos Reis
Fontes, Paulo Cezar Rezende
dc.subject.por.fl_str_mv Solanum tuberosum ;mineral nutrition; fresh matter yield; dry matter yield
Solanum tuberosum; nutrição mineral; produção de matéria fresca; produção de matéria seca
topic Solanum tuberosum ;mineral nutrition; fresh matter yield; dry matter yield
Solanum tuberosum; nutrição mineral; produção de matéria fresca; produção de matéria seca
description This study was conducted in order to evaluate potato (Solanum tuberosum L.) morphology and dry matter partition in response to sampling time, K levels and its residue. Six K levels (0, 60, 120, 240, 480 and 960 kg K2O ha-1) were applied in the field as potassium sulfate, in randomized blocks design, repeated four times. Baraka potato tubers were seeded spaced 0.8 x 0.3 m. Plants were sampled at 20 and 48 days after its emergence (DAE) to estimate leaf area, stem length, number and fresh and dry matter yield of leaf, stem and tuber, and dry matter content of leaf and stem. Only stem length increased with K fertilization, resulting in smaller overshadow of plant. In the first experiment, at 20 DAE, potato was presenting, in media, 42 leaves, three stems, 5,389 cm2 of leaf area, 157.1 and 216.4 g of fresh matter of stem and leaf, respectively, and 6.2 and 9.2% of dry matter content of stem and leaf, respectively.
publishDate 1999
dc.date.none.fl_str_mv 1999-05-01
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/5252
url https://seer.sct.embrapa.br/index.php/pab/article/view/5252
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/5252/2444
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 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.34, n.5, maio 1999; 795-799
Pesquisa Agropecuária Brasileira; v.34, n.5, maio 1999; 795-799
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
_version_ 1793416709783158784

Registros relacionados