Evaluation of three seed distribution mechanisms
Autor(a) principal: | |
---|---|
Data de Publicação: | 1998 |
Outros Autores: | , , |
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/4850 |
Resumo: | Three seed distribution mechanisms, conic, spiral, and helical shaped, assembled on three manual seeders were evaluated with regard to sowing density (number of seeds per meter), distribution uniformity (acceptable spacing), slippage and forward velocity. Maize, soybeen, and wheat seeds were used in the evaluation tests. The percentage of acceptable spacing (0.5 - 1.5 nominal spacing) varied from 32.8%, for the spiral mechanism, to 54.8%, for the conic mechanism, both using maize seed. The soybeen sowing density varied from 454,167 to 491,667, for a target density of 450,000 seeds/ha; with maize, it varied from 55,833 to 70,000, for a target density of 60,000 seeds/ha; and with wheat, it varied from 3,920,000 to 4,111,100, for a target density of 3,770,000 seeds/ha. The driven wheel slippage varied from 0.3%, for the spiral type, to 0.5% for the helical and conic shaped. |
id |
EMBRAPA-4_294f2b5c713323b1df25d9c59ee5ecda |
---|---|
oai_identifier_str |
oai:ojs.seer.sct.embrapa.br:article/4850 |
network_acronym_str |
EMBRAPA-4 |
network_name_str |
Pesquisa Agropecuária Brasileira (Online) |
repository_id_str |
|
spelling |
Evaluation of three seed distribution mechanismsAvaliação de três mecanismos de distribuição de sementesmechanization; seeders; seedingmecanização; semeadoras; plantioThree seed distribution mechanisms, conic, spiral, and helical shaped, assembled on three manual seeders were evaluated with regard to sowing density (number of seeds per meter), distribution uniformity (acceptable spacing), slippage and forward velocity. Maize, soybeen, and wheat seeds were used in the evaluation tests. The percentage of acceptable spacing (0.5 - 1.5 nominal spacing) varied from 32.8%, for the spiral mechanism, to 54.8%, for the conic mechanism, both using maize seed. The soybeen sowing density varied from 454,167 to 491,667, for a target density of 450,000 seeds/ha; with maize, it varied from 55,833 to 70,000, for a target density of 60,000 seeds/ha; and with wheat, it varied from 3,920,000 to 4,111,100, for a target density of 3,770,000 seeds/ha. The driven wheel slippage varied from 0.3%, for the spiral type, to 0.5% for the helical and conic shaped.Três mecanismos de distribuição de sementes do tipo cônico, espiral e helicoidal, montados sobre três semeadoras manuais, foram avaliados em relação à densidade de semeadura (número de sementes por metro), uniformidade de distribuição de sementes (percentagem de espaçamentos aceitáveis), patinagem da roda motriz e velocidade de deslocamento da semeadora. Para os testes dos referidos mecanismos utilizaram-se sementes de milho, soja e trigo. Verificou-se que a percentagem de espaçamento aceitável (0,5 - 1,5 do espaçamento nominal) variou de 32,8%, no mecanismo do tipo espiral a 54,8%, no mecanismo cônico, ambos com sementes de milho. A densidade de semeadura variou, com sementes de soja, de 454.167 a 491.667, quando a esperada era de 450.000 sementes/ha; com sementes de milho, de 55.833 a 70.000, quando a esperada era de 60.000 sementes/ha; e com sementes de trigo, de 3.920.000 a 4.111.100, quando a esperada era de 3.770.000 sementes/ha. A patinagem das rodas acionadoras dos mecanismos variou de 0,3%, no mecanismo espiral, a 0,5% nos mecanismos helicoidal e cônico.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraEduardo de Castro Rocha, FranciscoPaulo Arantes Rodrigues da Cunha, JoãoAlberto Bento Franz, CláudioMauro Folle, Sérgio1998-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/4850Pesquisa Agropecuaria Brasileira; v.33, n.3, mar. 1998; 331-337Pesquisa Agropecuária Brasileira; v.33, n.3, mar. 1998; 331-3371678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/4850/6981info:eu-repo/semantics/openAccess2014-11-20T15:45:55Zoai:ojs.seer.sct.embrapa.br:article/4850Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-11-20T15:45:55Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Evaluation of three seed distribution mechanisms Avaliação de três mecanismos de distribuição de sementes |
title |
Evaluation of three seed distribution mechanisms |
spellingShingle |
Evaluation of three seed distribution mechanisms Eduardo de Castro Rocha, Francisco mechanization; seeders; seeding mecanização; semeadoras; plantio |
title_short |
Evaluation of three seed distribution mechanisms |
title_full |
Evaluation of three seed distribution mechanisms |
title_fullStr |
Evaluation of three seed distribution mechanisms |
title_full_unstemmed |
Evaluation of three seed distribution mechanisms |
title_sort |
Evaluation of three seed distribution mechanisms |
author |
Eduardo de Castro Rocha, Francisco |
author_facet |
Eduardo de Castro Rocha, Francisco Paulo Arantes Rodrigues da Cunha, João Alberto Bento Franz, Cláudio Mauro Folle, Sérgio |
author_role |
author |
author2 |
Paulo Arantes Rodrigues da Cunha, João Alberto Bento Franz, Cláudio Mauro Folle, Sérgio |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Eduardo de Castro Rocha, Francisco Paulo Arantes Rodrigues da Cunha, João Alberto Bento Franz, Cláudio Mauro Folle, Sérgio |
dc.subject.por.fl_str_mv |
mechanization; seeders; seeding mecanização; semeadoras; plantio |
topic |
mechanization; seeders; seeding mecanização; semeadoras; plantio |
description |
Three seed distribution mechanisms, conic, spiral, and helical shaped, assembled on three manual seeders were evaluated with regard to sowing density (number of seeds per meter), distribution uniformity (acceptable spacing), slippage and forward velocity. Maize, soybeen, and wheat seeds were used in the evaluation tests. The percentage of acceptable spacing (0.5 - 1.5 nominal spacing) varied from 32.8%, for the spiral mechanism, to 54.8%, for the conic mechanism, both using maize seed. The soybeen sowing density varied from 454,167 to 491,667, for a target density of 450,000 seeds/ha; with maize, it varied from 55,833 to 70,000, for a target density of 60,000 seeds/ha; and with wheat, it varied from 3,920,000 to 4,111,100, for a target density of 3,770,000 seeds/ha. The driven wheel slippage varied from 0.3%, for the spiral type, to 0.5% for the helical and conic shaped. |
publishDate |
1998 |
dc.date.none.fl_str_mv |
1998-03-01 |
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/4850 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/4850 |
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/4850/6981 |
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.33, n.3, mar. 1998; 331-337 Pesquisa Agropecuária Brasileira; v.33, n.3, mar. 1998; 331-337 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_ |
1793416675281862656 |