GROWTH ANALYSIS OF SUNFLOWER CULTIVARS IN RESPONSE TO FERTILIZATION LEVELS AND DATE OF SEEDING

Detalhes bibliográficos
Autor(a) principal: BARNI, NÍDIO ANTONIO
Data de Publicação: 1995
Outros Autores: BERLATO, MOACIR ANTONIO, SANTOS, ANTONIO ODAIR, SARTORI, GILMAR
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Gaúcha (Online)
Texto Completo: http://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/559
Resumo: The growth of sunflower was evaluated during two growing seasons (1991/92 and 1992/93) in Taquari-RS. The study involved cultivars, fertilization leveis and date of seeding, under non limiting water conditions. Growth rate and net assimilation were strongly associated with air temperature. Leaf Area Index (LAI) showed a strong relationship with the Degree days. The low temparatures determined elongation of subperiods and on the duration of growth cycle. There was no response to photoperiod. The later cultivar showed a higher biological yield than the early cultivars evaluated. The fertilization leveis evaluated did not show any differences on the sunflower development and this was dueto the high fertility levei of the local soil. 
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spelling GROWTH ANALYSIS OF SUNFLOWER CULTIVARS IN RESPONSE TO FERTILIZATION LEVELS AND DATE OF SEEDINGANÁLISE DE CRESCIMENTO DO GIRASSOL EM RESPOSTA A CULTIVARES, NÍVEIS DE ADUBAÇÃO E ÉPOCAS DE SEMEADURAgrowth rate; temperature; sunflower cultivars.análise de crescimento; temperatura; cultivares de girassol.The growth of sunflower was evaluated during two growing seasons (1991/92 and 1992/93) in Taquari-RS. The study involved cultivars, fertilization leveis and date of seeding, under non limiting water conditions. Growth rate and net assimilation were strongly associated with air temperature. Leaf Area Index (LAI) showed a strong relationship with the Degree days. The low temparatures determined elongation of subperiods and on the duration of growth cycle. There was no response to photoperiod. The later cultivar showed a higher biological yield than the early cultivars evaluated. The fertilization leveis evaluated did not show any differences on the sunflower development and this was dueto the high fertility levei of the local soil. O crescimento do girassol foi avaliado em dois anos agrícolas (1991/92 e 1992/93) na localidade de Taquari- RS, envolvendo cultivares, níveis de adubação e épocas de semeadura, em condições hídricas não limitantes. As taxas de crescimento da cultura e assimilatória liquida estiveram fortemente associadas com a temperatura do ar. O índice de área foliar (IAF) apresentou estreita relação com a soma térmica efetiva. As temperaturas baixas determinaram o alongamento dos subperiodos e do ciclo biológico da oleaginosa. A cultura não evidenciou resposta ao fotoperíodo. A cultivar tardia apresentou rendimento biológico mais elevado do que as cultivares precoces avaliadas. Os níveis de adubação avaliados não evidenciaram diferenças no comportamento do girassol, em função da alta fertilidade apresentada pelo solo utilizado.Departamento de Diagnóstico e Pesquisa Agropecuária. Secretaria de Agricultura, Pecuária e Desenvolvimento Rural1995-07-19info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/559Pesquisa Agropecuária Gaúcha; Vol 1 No 2 (1995): PESQ. AGROP. GAÚCHA; 167-184Pesquisa Agropecuária Gaúcha; v. 1 n. 2 (1995): PESQ. AGROP. GAÚCHA; 167-1842595-76860104-9070reponame:Pesquisa Agropecuária Gaúcha (Online)instname:Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sulinstacron:SEAPDRporhttp://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/559/514BARNI, NÍDIO ANTONIO BERLATO, MOACIR ANTONIO SANTOS, ANTONIO ODAIR SARTORI, GILMAR info:eu-repo/semantics/openAccess2024-04-22T12:01:02Zoai:ojs.revistapag.agricultura.rs.gov.br:article/559Revistahttp://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapagPUBhttp://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/oaipag@agricultura.rs.gov.br||2595-76860104-9070opendoar:2024-04-22T12:01:02Pesquisa Agropecuária Gaúcha (Online) - Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sulfalse
dc.title.none.fl_str_mv GROWTH ANALYSIS OF SUNFLOWER CULTIVARS IN RESPONSE TO FERTILIZATION LEVELS AND DATE OF SEEDING
ANÁLISE DE CRESCIMENTO DO GIRASSOL EM RESPOSTA A CULTIVARES, NÍVEIS DE ADUBAÇÃO E ÉPOCAS DE SEMEADURA
title GROWTH ANALYSIS OF SUNFLOWER CULTIVARS IN RESPONSE TO FERTILIZATION LEVELS AND DATE OF SEEDING
spellingShingle GROWTH ANALYSIS OF SUNFLOWER CULTIVARS IN RESPONSE TO FERTILIZATION LEVELS AND DATE OF SEEDING
BARNI, NÍDIO ANTONIO
growth rate; temperature; sunflower cultivars.
análise de crescimento; temperatura; cultivares de girassol.
title_short GROWTH ANALYSIS OF SUNFLOWER CULTIVARS IN RESPONSE TO FERTILIZATION LEVELS AND DATE OF SEEDING
title_full GROWTH ANALYSIS OF SUNFLOWER CULTIVARS IN RESPONSE TO FERTILIZATION LEVELS AND DATE OF SEEDING
title_fullStr GROWTH ANALYSIS OF SUNFLOWER CULTIVARS IN RESPONSE TO FERTILIZATION LEVELS AND DATE OF SEEDING
title_full_unstemmed GROWTH ANALYSIS OF SUNFLOWER CULTIVARS IN RESPONSE TO FERTILIZATION LEVELS AND DATE OF SEEDING
title_sort GROWTH ANALYSIS OF SUNFLOWER CULTIVARS IN RESPONSE TO FERTILIZATION LEVELS AND DATE OF SEEDING
author BARNI, NÍDIO ANTONIO
author_facet BARNI, NÍDIO ANTONIO
BERLATO, MOACIR ANTONIO
SANTOS, ANTONIO ODAIR
SARTORI, GILMAR
author_role author
author2 BERLATO, MOACIR ANTONIO
SANTOS, ANTONIO ODAIR
SARTORI, GILMAR
author2_role author
author
author
dc.contributor.author.fl_str_mv BARNI, NÍDIO ANTONIO
BERLATO, MOACIR ANTONIO
SANTOS, ANTONIO ODAIR
SARTORI, GILMAR
dc.subject.por.fl_str_mv growth rate; temperature; sunflower cultivars.
análise de crescimento; temperatura; cultivares de girassol.
topic growth rate; temperature; sunflower cultivars.
análise de crescimento; temperatura; cultivares de girassol.
description The growth of sunflower was evaluated during two growing seasons (1991/92 and 1992/93) in Taquari-RS. The study involved cultivars, fertilization leveis and date of seeding, under non limiting water conditions. Growth rate and net assimilation were strongly associated with air temperature. Leaf Area Index (LAI) showed a strong relationship with the Degree days. The low temparatures determined elongation of subperiods and on the duration of growth cycle. There was no response to photoperiod. The later cultivar showed a higher biological yield than the early cultivars evaluated. The fertilization leveis evaluated did not show any differences on the sunflower development and this was dueto the high fertility levei of the local soil. 
publishDate 1995
dc.date.none.fl_str_mv 1995-07-19
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 http://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/559
url http://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/559
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv http://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/559/514
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 Departamento de Diagnóstico e Pesquisa Agropecuária. Secretaria de Agricultura, Pecuária e Desenvolvimento Rural
publisher.none.fl_str_mv Departamento de Diagnóstico e Pesquisa Agropecuária. Secretaria de Agricultura, Pecuária e Desenvolvimento Rural
dc.source.none.fl_str_mv Pesquisa Agropecuária Gaúcha; Vol 1 No 2 (1995): PESQ. AGROP. GAÚCHA; 167-184
Pesquisa Agropecuária Gaúcha; v. 1 n. 2 (1995): PESQ. AGROP. GAÚCHA; 167-184
2595-7686
0104-9070
reponame:Pesquisa Agropecuária Gaúcha (Online)
instname:Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sul
instacron:SEAPDR
instname_str Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sul
instacron_str SEAPDR
institution SEAPDR
reponame_str Pesquisa Agropecuária Gaúcha (Online)
collection Pesquisa Agropecuária Gaúcha (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Gaúcha (Online) - Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sul
repository.mail.fl_str_mv pag@agricultura.rs.gov.br||
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