Evaluation of three seed distribution mechanisms

Detalhes bibliográficos
Autor(a) principal: Eduardo de Castro Rocha, Francisco
Data de Publicação: 1998
Outros Autores: Paulo Arantes Rodrigues da Cunha, João, Alberto Bento Franz, Cláudio, Mauro Folle, Sérgio
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.
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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
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