Response of twelve corn cultivars to soil water deficit in a Dark-Red (typic haplustox) Latosol from the “Cerrados” of the Federal District, Brazil

Detalhes bibliográficos
Autor(a) principal: Espinoza, Waldo
Data de Publicação: 2014
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/15945
Resumo: A field experiment to compare the response of twelve cultivars to soil water deficit was conducted during the dry season of 1980. The study indicated that best yields under permanent irrigation were obtained with corn (Zea mays L.) cultivars Cargill 111 (6.025 kg/ha > Ag 301 = Ag 259 =Ag 401 = CMS 01. After a drought of 31 days (tank A evap. 170 mm), best yields corresponded to cultivars Ag 259 (3.976 kg/ha) = CMS 08 = Ag 401 = Cargill 111 = Ag 301. General average yield under permanent irrigation and soil water deficit conditions, were 4.557 and 3.192 kg/ha, respectively. There were not significative effects of soil water regime on the cultivars in relation to number of cobs/plant or cobs weight. Accumulated evapotranspiration of cv. Cargill 111 reached 515 mm. All the cultivar, started to diminish their evapotranspiration after 12 to 15 days of drought. After 20 days of drought, it diminished from 5,75 to 1,90 mm/day. All the cultivars presented similar root distribution. Eighty to ninety per cent of corn root weight was found in the upper 20 cm of the profile. No effect of soil water regime on root density of the different cultivars was observed.
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spelling Response of twelve corn cultivars to soil water deficit in a Dark-Red (typic haplustox) Latosol from the “Cerrados” of the Federal District, BrazilResposta de doze cultivares de milho ao déficit hídrico num Latossolo Vermelho-Escuro (typic haplustox) de Cerrados do Distrito FederalEvapotranspiration; root developmentevapotranspiração; desenvolvimento radicularA field experiment to compare the response of twelve cultivars to soil water deficit was conducted during the dry season of 1980. The study indicated that best yields under permanent irrigation were obtained with corn (Zea mays L.) cultivars Cargill 111 (6.025 kg/ha > Ag 301 = Ag 259 =Ag 401 = CMS 01. After a drought of 31 days (tank A evap. 170 mm), best yields corresponded to cultivars Ag 259 (3.976 kg/ha) = CMS 08 = Ag 401 = Cargill 111 = Ag 301. General average yield under permanent irrigation and soil water deficit conditions, were 4.557 and 3.192 kg/ha, respectively. There were not significative effects of soil water regime on the cultivars in relation to number of cobs/plant or cobs weight. Accumulated evapotranspiration of cv. Cargill 111 reached 515 mm. All the cultivar, started to diminish their evapotranspiration after 12 to 15 days of drought. After 20 days of drought, it diminished from 5,75 to 1,90 mm/day. All the cultivars presented similar root distribution. Eighty to ninety per cent of corn root weight was found in the upper 20 cm of the profile. No effect of soil water regime on root density of the different cultivars was observed.Experimento conduzido em condições de campo, na época da seca de 1980, para comparar as respostas de doze cultivares de milho (Zea mays L.) ao déficit hídrico. O estudo indicou que os melhores rendimentos sob irrigação permanente - foram obtidos com as cultivares Cargill 111 (6.025 kg/ha) > Ag 301 = Ag 259 = 401 CMS 01. Após 31 dias de veranico (evaporação do tanque A = 170 mm), os melhores rendimentos foram obtidos com Ag 259 (3.976 kg/ha) = CMS 08 = Ag 401 = Cargill 111 = 301. A média dos rendimentos sob irrigação permanente e em condições de déficit hídrico, foi, respectivamente, de 4.557 e 3.192 kg/ha. Não houve efeito significativos, do regime hídrico, nas cultivares, quanto ao número de espigas ou ao seu peso. A evapotranspiração acumulada da cv. Cargill 111 atingiu 515 mm. Todas as cultivares começaram a diminuir sua evapotranspiração 12 a 15 dias após o início da seca; e decorridos 20 dias, diminuiu de 5,75 até 1,90 mm/dia. A distribuição das raízes foi semelhante em todas as cultivares. Oitenta a noventa por cento do peso de raízes, em todas as cultivares, estava concentrado nos primeiros 20 cm de perfil do solo. Não foi observada diferença, entre as cultivares, quanto â densidade radicular para as diferentes profundidades do solo, quando submetidas, ou não, ao déficit hídrico.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraEspinoza, Waldo2014-04-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/15945Pesquisa Agropecuaria Brasileira; v.17, n.6, jun. 1982; 905-915Pesquisa Agropecuária Brasileira; v.17, n.6, jun. 1982; 905-9151678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/15945/10058info:eu-repo/semantics/openAccess2014-04-16T13:42:01Zoai:ojs.seer.sct.embrapa.br:article/15945Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-16T13:42:01Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Response of twelve corn cultivars to soil water deficit in a Dark-Red (typic haplustox) Latosol from the “Cerrados” of the Federal District, Brazil
Resposta de doze cultivares de milho ao déficit hídrico num Latossolo Vermelho-Escuro (typic haplustox) de Cerrados do Distrito Federal
title Response of twelve corn cultivars to soil water deficit in a Dark-Red (typic haplustox) Latosol from the “Cerrados” of the Federal District, Brazil
spellingShingle Response of twelve corn cultivars to soil water deficit in a Dark-Red (typic haplustox) Latosol from the “Cerrados” of the Federal District, Brazil
Espinoza, Waldo
Evapotranspiration; root development
evapotranspiração; desenvolvimento radicular
title_short Response of twelve corn cultivars to soil water deficit in a Dark-Red (typic haplustox) Latosol from the “Cerrados” of the Federal District, Brazil
title_full Response of twelve corn cultivars to soil water deficit in a Dark-Red (typic haplustox) Latosol from the “Cerrados” of the Federal District, Brazil
title_fullStr Response of twelve corn cultivars to soil water deficit in a Dark-Red (typic haplustox) Latosol from the “Cerrados” of the Federal District, Brazil
title_full_unstemmed Response of twelve corn cultivars to soil water deficit in a Dark-Red (typic haplustox) Latosol from the “Cerrados” of the Federal District, Brazil
title_sort Response of twelve corn cultivars to soil water deficit in a Dark-Red (typic haplustox) Latosol from the “Cerrados” of the Federal District, Brazil
author Espinoza, Waldo
author_facet Espinoza, Waldo
author_role author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Espinoza, Waldo
dc.subject.por.fl_str_mv Evapotranspiration; root development
evapotranspiração; desenvolvimento radicular
topic Evapotranspiration; root development
evapotranspiração; desenvolvimento radicular
description A field experiment to compare the response of twelve cultivars to soil water deficit was conducted during the dry season of 1980. The study indicated that best yields under permanent irrigation were obtained with corn (Zea mays L.) cultivars Cargill 111 (6.025 kg/ha > Ag 301 = Ag 259 =Ag 401 = CMS 01. After a drought of 31 days (tank A evap. 170 mm), best yields corresponded to cultivars Ag 259 (3.976 kg/ha) = CMS 08 = Ag 401 = Cargill 111 = Ag 301. General average yield under permanent irrigation and soil water deficit conditions, were 4.557 and 3.192 kg/ha, respectively. There were not significative effects of soil water regime on the cultivars in relation to number of cobs/plant or cobs weight. Accumulated evapotranspiration of cv. Cargill 111 reached 515 mm. All the cultivar, started to diminish their evapotranspiration after 12 to 15 days of drought. After 20 days of drought, it diminished from 5,75 to 1,90 mm/day. All the cultivars presented similar root distribution. Eighty to ninety per cent of corn root weight was found in the upper 20 cm of the profile. No effect of soil water regime on root density of the different cultivars was observed.
publishDate 2014
dc.date.none.fl_str_mv 2014-04-16
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/15945
url https://seer.sct.embrapa.br/index.php/pab/article/view/15945
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/15945/10058
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.17, n.6, jun. 1982; 905-915
Pesquisa Agropecuária Brasileira; v.17, n.6, jun. 1982; 905-915
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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