Seeding rate and velocity influence on black oat (Avena strigosa Schreb.) growth, under no-tillage conditions
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , |
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/225 |
Resumo: | An experiment under no-tillage conditions was carried out in São Gabriel/RS, to evaluate the influence of seeding rate (30, 60 and 90 kg/ha of viable seeds) and velocity (3,2; 5,3; 6,9; and 8,2 km/h) on black oat growth, which was submitted to a intensive cattle grazing. Number of tillers per plant and culms per m2 were affected by seeding rate, but not by seeding velocity. Before grazing, plant and principal culm dry matter such as total dry matter production were bigger for higher seeding velocities. Major total dry matter production was observed for seeding rates of 60 and 90 kg/ha. Higher seeding rates reduced leaf/culm ratio and plant, principal culm and tillers dry matter. After grazing, all variables were not influenced by the treatments, excepting plant dry matter, stature and number of tillers per plant and culms per m2. |
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Pesquisa Agropecuária Gaúcha (Online) |
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Seeding rate and velocity influence on black oat (Avena strigosa Schreb.) growth, under no-tillage conditions Influência da densidade e velocidade de semeadura no crescimento da aveia preta (Avena strigosa Schreb.), em semeadura diretaplant population, seeders, no-tillage, tillering, dry matter production.população de plantas, semeadoras, semeadura direta, perfilhamento, produção de massa seca.An experiment under no-tillage conditions was carried out in São Gabriel/RS, to evaluate the influence of seeding rate (30, 60 and 90 kg/ha of viable seeds) and velocity (3,2; 5,3; 6,9; and 8,2 km/h) on black oat growth, which was submitted to a intensive cattle grazing. Number of tillers per plant and culms per m2 were affected by seeding rate, but not by seeding velocity. Before grazing, plant and principal culm dry matter such as total dry matter production were bigger for higher seeding velocities. Major total dry matter production was observed for seeding rates of 60 and 90 kg/ha. Higher seeding rates reduced leaf/culm ratio and plant, principal culm and tillers dry matter. After grazing, all variables were not influenced by the treatments, excepting plant dry matter, stature and number of tillers per plant and culms per m2.Avaliou-se o efeito da densidade (30, 60 e 90 kg/ha de sementes viáveis) e da velocidade de semeadura (3,2; 5,3; 6,9 e 8,2 km/ h) no crescimento da aveia preta, submetida a um pastejo intensivo, em um experimento conduzido sob semeadura direta em São Gabriel/RS. O número de perfilhos por planta e de colmos por m2 foi afetado pela densidade, mas não pela velocidade de semeadura. Antes do pastejo, a massa seca da planta e do colmo principal e a produção de massa seca foram maiores para as velocidades mais altas. Observou-se ainda uma maior produção de massa seca e estatura de planta nas densidades de 60 e 90 kg/ha e uma redução na relação folha/colmo e na massa específica da planta, do colmo principal e dos perfilhos, com o aumento da densidade. À exceção da massa da planta, da estatura, do número de perfilhos por planta e de colmos por m2, as demais variáveis não foram influenciadas pelos tratamentos, após o pastejo.Departamento de Diagnóstico e Pesquisa Agropecuária. Secretaria de Agricultura, Pecuária e Desenvolvimento Rural2008-08-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/225Pesquisa Agropecuária Gaúcha; Vol 14 No 1 (2008): PESQ. AGROP. GAÚCHA; 33-40Pesquisa Agropecuária Gaúcha; v. 14 n. 1 (2008): PESQ. AGROP. GAÚCHA; 33-402595-76860104-9070reponame: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/225/188Martins, Jorge Dubal Debiasi, Henrique Missio, Evandro Luiz info:eu-repo/semantics/openAccess2024-04-22T12:37:50Zoai:ojs.revistapag.agricultura.rs.gov.br:article/225Revistahttp://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:2024-04-22T12:37:50Pesquisa Agropecuária Gaúcha (Online) - Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sulfalse |
dc.title.none.fl_str_mv |
Seeding rate and velocity influence on black oat (Avena strigosa Schreb.) growth, under no-tillage conditions Influência da densidade e velocidade de semeadura no crescimento da aveia preta (Avena strigosa Schreb.), em semeadura direta |
title |
Seeding rate and velocity influence on black oat (Avena strigosa Schreb.) growth, under no-tillage conditions |
spellingShingle |
Seeding rate and velocity influence on black oat (Avena strigosa Schreb.) growth, under no-tillage conditions Martins, Jorge Dubal plant population, seeders, no-tillage, tillering, dry matter production. população de plantas, semeadoras, semeadura direta, perfilhamento, produção de massa seca. |
title_short |
Seeding rate and velocity influence on black oat (Avena strigosa Schreb.) growth, under no-tillage conditions |
title_full |
Seeding rate and velocity influence on black oat (Avena strigosa Schreb.) growth, under no-tillage conditions |
title_fullStr |
Seeding rate and velocity influence on black oat (Avena strigosa Schreb.) growth, under no-tillage conditions |
title_full_unstemmed |
Seeding rate and velocity influence on black oat (Avena strigosa Schreb.) growth, under no-tillage conditions |
title_sort |
Seeding rate and velocity influence on black oat (Avena strigosa Schreb.) growth, under no-tillage conditions |
author |
Martins, Jorge Dubal |
author_facet |
Martins, Jorge Dubal Debiasi, Henrique Missio, Evandro Luiz |
author_role |
author |
author2 |
Debiasi, Henrique Missio, Evandro Luiz |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Martins, Jorge Dubal Debiasi, Henrique Missio, Evandro Luiz |
dc.subject.por.fl_str_mv |
plant population, seeders, no-tillage, tillering, dry matter production. população de plantas, semeadoras, semeadura direta, perfilhamento, produção de massa seca. |
topic |
plant population, seeders, no-tillage, tillering, dry matter production. população de plantas, semeadoras, semeadura direta, perfilhamento, produção de massa seca. |
description |
An experiment under no-tillage conditions was carried out in São Gabriel/RS, to evaluate the influence of seeding rate (30, 60 and 90 kg/ha of viable seeds) and velocity (3,2; 5,3; 6,9; and 8,2 km/h) on black oat growth, which was submitted to a intensive cattle grazing. Number of tillers per plant and culms per m2 were affected by seeding rate, but not by seeding velocity. Before grazing, plant and principal culm dry matter such as total dry matter production were bigger for higher seeding velocities. Major total dry matter production was observed for seeding rates of 60 and 90 kg/ha. Higher seeding rates reduced leaf/culm ratio and plant, principal culm and tillers dry matter. After grazing, all variables were not influenced by the treatments, excepting plant dry matter, stature and number of tillers per plant and culms per m2. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-08-10 |
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/225 |
url |
http://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/225 |
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/225/188 |
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 14 No 1 (2008): PESQ. AGROP. GAÚCHA; 33-40 Pesquisa Agropecuária Gaúcha; v. 14 n. 1 (2008): PESQ. AGROP. GAÚCHA; 33-40 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|| |
_version_ |
1797068772137238528 |