Effect of plant density, sowing date and fertilization on the sunflower agronomic characteristics. I. Grain yield and oil and yield components

Detalhes bibliográficos
Autor(a) principal: de Almeida, Milton Luiz
Data de Publicação: 1993
Outros Autores: da Silva, Paulo Regis Ferreira
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/3944
Resumo: With the objective of identifying possible interactions between plant density, planting date and soil fertility regarding grain yield and components, percentage and yield of oil, an experiment was conducted at Eldorado do Sul, RS, Brazil, during the 1988/89 growing season. Four planting densities (30,000, 45,000, 60,000 and 75,000 pl/ha) and two planting dates (July, 27 and September, 19) were tested with and without fertilizer application. In the first planting date, grain yield increased with the increase of plant density for 75,000 and 60,000 pl/ha respectively, for treatments with and without fertilizer. For the second planting date, plant density response was obtained only with fertilizer. The percentage of oil increased as plant density also did only for the first planting date. Oil yield showed a similar response to that of grain yield.
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spelling Effect of plant density, sowing date and fertilization on the sunflower agronomic characteristics. I. Grain yield and oil and yield componentsEfeito de densidade e época de semeadura e de adubação nas características agronômicas de girassol. I. Rendimento de grãos e de óleo e seus componentesHelianthus annuus; weight of 1,000 seeds; number of seeds per head; density; planting date; soil fertilityHelianthus annuus; peso de mil grãos; número de grãos por capítulo; densidade; época de semeadura; fertilidade do soloWith the objective of identifying possible interactions between plant density, planting date and soil fertility regarding grain yield and components, percentage and yield of oil, an experiment was conducted at Eldorado do Sul, RS, Brazil, during the 1988/89 growing season. Four planting densities (30,000, 45,000, 60,000 and 75,000 pl/ha) and two planting dates (July, 27 and September, 19) were tested with and without fertilizer application. In the first planting date, grain yield increased with the increase of plant density for 75,000 and 60,000 pl/ha respectively, for treatments with and without fertilizer. For the second planting date, plant density response was obtained only with fertilizer. The percentage of oil increased as plant density also did only for the first planting date. Oil yield showed a similar response to that of grain yield.Com o objetivo de identificar possíveis interações entre densidade de plantas, época de semeadura e fertilidade do solo que, de alguma forma, interferissem no rendimento de grãos, teor e rendimento de óleo de girassol (Cv. Contisol), conduziu-se este trabalho, durante o ano agrícola de 1988/89, no município de Eldorado do Sul, RS. Os tratamentos constaram de quatro densidades de plantas (30, 45, 60 e 75 mil pl/ha) e duas épocas de semeadura (27/07/88 e 19/09/88), em presença (25 + 75 kg de N, 100 kg de P2O5 e 100 kg de K2O por ha) e ausência de adubação. Na primeira época, os rendimentos de grãos aumentaram com a elevação da densidade até 75.000 e 60.000 pl/ha, respectivamente nos tratamentos com e sem adubação. Já na segunda época só houve resposta à densidade nos tratamentos com adubação. O teor de óleo só respondeu positivamente ao aumento de densidade na primeira época. O rendimento de óleo apresentou resposta similar à do rendimento de grãos.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária Brasileirade Almeida, Milton Luizda Silva, Paulo Regis Ferreira1993-07-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/3944Pesquisa Agropecuaria Brasileira; v.28, n.7, jul. 1993; 833-841Pesquisa Agropecuária Brasileira; v.28, n.7, jul. 1993; 833-8411678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/3944/1235info:eu-repo/semantics/openAccess2011-08-23T15:05:49Zoai:ojs.seer.sct.embrapa.br:article/3944Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2011-08-23T15:05:49Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Effect of plant density, sowing date and fertilization on the sunflower agronomic characteristics. I. Grain yield and oil and yield components
Efeito de densidade e época de semeadura e de adubação nas características agronômicas de girassol. I. Rendimento de grãos e de óleo e seus componentes
title Effect of plant density, sowing date and fertilization on the sunflower agronomic characteristics. I. Grain yield and oil and yield components
spellingShingle Effect of plant density, sowing date and fertilization on the sunflower agronomic characteristics. I. Grain yield and oil and yield components
de Almeida, Milton Luiz
Helianthus annuus; weight of 1,000 seeds; number of seeds per head; density; planting date; soil fertility
Helianthus annuus; peso de mil grãos; número de grãos por capítulo; densidade; época de semeadura; fertilidade do solo
title_short Effect of plant density, sowing date and fertilization on the sunflower agronomic characteristics. I. Grain yield and oil and yield components
title_full Effect of plant density, sowing date and fertilization on the sunflower agronomic characteristics. I. Grain yield and oil and yield components
title_fullStr Effect of plant density, sowing date and fertilization on the sunflower agronomic characteristics. I. Grain yield and oil and yield components
title_full_unstemmed Effect of plant density, sowing date and fertilization on the sunflower agronomic characteristics. I. Grain yield and oil and yield components
title_sort Effect of plant density, sowing date and fertilization on the sunflower agronomic characteristics. I. Grain yield and oil and yield components
author de Almeida, Milton Luiz
author_facet de Almeida, Milton Luiz
da Silva, Paulo Regis Ferreira
author_role author
author2 da Silva, Paulo Regis Ferreira
author2_role author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv de Almeida, Milton Luiz
da Silva, Paulo Regis Ferreira
dc.subject.por.fl_str_mv Helianthus annuus; weight of 1,000 seeds; number of seeds per head; density; planting date; soil fertility
Helianthus annuus; peso de mil grãos; número de grãos por capítulo; densidade; época de semeadura; fertilidade do solo
topic Helianthus annuus; weight of 1,000 seeds; number of seeds per head; density; planting date; soil fertility
Helianthus annuus; peso de mil grãos; número de grãos por capítulo; densidade; época de semeadura; fertilidade do solo
description With the objective of identifying possible interactions between plant density, planting date and soil fertility regarding grain yield and components, percentage and yield of oil, an experiment was conducted at Eldorado do Sul, RS, Brazil, during the 1988/89 growing season. Four planting densities (30,000, 45,000, 60,000 and 75,000 pl/ha) and two planting dates (July, 27 and September, 19) were tested with and without fertilizer application. In the first planting date, grain yield increased with the increase of plant density for 75,000 and 60,000 pl/ha respectively, for treatments with and without fertilizer. For the second planting date, plant density response was obtained only with fertilizer. The percentage of oil increased as plant density also did only for the first planting date. Oil yield showed a similar response to that of grain yield.
publishDate 1993
dc.date.none.fl_str_mv 1993-07-01
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/3944
url https://seer.sct.embrapa.br/index.php/pab/article/view/3944
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/3944/1235
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.28, n.7, jul. 1993; 833-841
Pesquisa Agropecuária Brasileira; v.28, n.7, jul. 1993; 833-841
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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