Water deficit in common beans. IV. Micrometeorological modifications
Autor(a) principal: | |
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Data de Publicação: | 2014 |
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/15917 |
Resumo: | Micrometeorological modifications were evaluated in common bean (Phaseolus vulgaris L.) crops subject to varying conditions of soil-water availability, in an experiment conducted at Piracicaba, SP, Brazil, 22°42' south latitude and 576 m altitude. Common beans were sown in 30m x 20 m split-plots, on three dates (July 7, July 22, and August 4, 1983), each receiving two conditions of soil water availability with continued irrigation and with a period of water stress caused by an 18-day period without rain (Sept. 25 to Oct. 12). During the drought period, on days with high atmospheric evaporative demand, the temperature of the canopy surface (measured by a remote infrared sensor) was higher than air temperature close to the plants in the stressed crop, while the contrary occurred in the irrigated one. Soil water deficit increased the air temperature and the water vapor saturation deficit near the plants. Micrometeorological modifications were higher by the end of the drought period and during the warmer times of the days. They also were higher at the plots of the latest sowing date (lees developed plants). The micrometeorological conditions near the plants were in agreement with the crop energy balance. |
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Water deficit in common beans. IV. Micrometeorological modificationsDeficiência hídrica em feijoeiro. IV. Alterações micrometeorológicasPhaseolus vulgaris; water deficit; micrometeorology; temperature; humidityPhaseolus vulgaris; deficiência hídrica; micrometeorologia; temperatura; umidade.Micrometeorological modifications were evaluated in common bean (Phaseolus vulgaris L.) crops subject to varying conditions of soil-water availability, in an experiment conducted at Piracicaba, SP, Brazil, 22°42' south latitude and 576 m altitude. Common beans were sown in 30m x 20 m split-plots, on three dates (July 7, July 22, and August 4, 1983), each receiving two conditions of soil water availability with continued irrigation and with a period of water stress caused by an 18-day period without rain (Sept. 25 to Oct. 12). During the drought period, on days with high atmospheric evaporative demand, the temperature of the canopy surface (measured by a remote infrared sensor) was higher than air temperature close to the plants in the stressed crop, while the contrary occurred in the irrigated one. Soil water deficit increased the air temperature and the water vapor saturation deficit near the plants. Micrometeorological modifications were higher by the end of the drought period and during the warmer times of the days. They also were higher at the plots of the latest sowing date (lees developed plants). The micrometeorological conditions near the plants were in agreement with the crop energy balance.Em experimento de campo, conduzido em Piracicaba, SP, à latitude de 22°42' sul e altitude de 576 m, foram avaliadas alterações micrometeorológicas em culturas de feijão (Phaseolus vulgaris L.), submetidas a diferentes condições de disponibilidade hídrica no solo. Os tratamentos constaram de três épocas de semeadura (7.7, 22.7 e 4.8.83) e duas condições de disponibilidade de água no solo (com e sem irrigação), durante a estiagem de 25.9 a 12.10, em subparcelas de 30 m x 20 m. Durante o período de estiagem e em dias de alta demanda evaporativa atmosférica, a temperatura do dossel (medida com sensor infravermelho) foi sempre superior à do ar junto à cultura não irrigada, ocorrendo o contrário na cultura irrigada. A temperatura e o déficit de saturação de vapor d'água do ar da camada limite também aumentaram sob déficit hídrico no solo, elevando a demanda evaporativa da atmosfera junto à cultura não irrigada. As alterações micrometeorológicas se acentuaram com a evolução do déficit hídrico e foram maiores nas horas mais quentes do dia e com a cultura menos desenvolvida. As condições micrometeorológicas seguiram as variações do balanço de energia da cultura.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraBergamaschi, HomeroVieira, Hamilton J.Ometto, José C.Angelocci, Luiz R.Libardi, Paulo L.2014-04-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/15917Pesquisa Agropecuaria Brasileira; v.24, n.7, jul. 1989; 769-777Pesquisa Agropecuária Brasileira; v.24, n.7, jul. 1989; 769-7771678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/15917/10015info:eu-repo/semantics/openAccess2014-08-27T18:31:38Zoai:ojs.seer.sct.embrapa.br:article/15917Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-08-27T18:31:38Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Water deficit in common beans. IV. Micrometeorological modifications Deficiência hídrica em feijoeiro. IV. Alterações micrometeorológicas |
title |
Water deficit in common beans. IV. Micrometeorological modifications |
spellingShingle |
Water deficit in common beans. IV. Micrometeorological modifications Bergamaschi, Homero Phaseolus vulgaris; water deficit; micrometeorology; temperature; humidity Phaseolus vulgaris; deficiência hídrica; micrometeorologia; temperatura; umidade. |
title_short |
Water deficit in common beans. IV. Micrometeorological modifications |
title_full |
Water deficit in common beans. IV. Micrometeorological modifications |
title_fullStr |
Water deficit in common beans. IV. Micrometeorological modifications |
title_full_unstemmed |
Water deficit in common beans. IV. Micrometeorological modifications |
title_sort |
Water deficit in common beans. IV. Micrometeorological modifications |
author |
Bergamaschi, Homero |
author_facet |
Bergamaschi, Homero Vieira, Hamilton J. Ometto, José C. Angelocci, Luiz R. Libardi, Paulo L. |
author_role |
author |
author2 |
Vieira, Hamilton J. Ometto, José C. Angelocci, Luiz R. Libardi, Paulo L. |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Bergamaschi, Homero Vieira, Hamilton J. Ometto, José C. Angelocci, Luiz R. Libardi, Paulo L. |
dc.subject.por.fl_str_mv |
Phaseolus vulgaris; water deficit; micrometeorology; temperature; humidity Phaseolus vulgaris; deficiência hídrica; micrometeorologia; temperatura; umidade. |
topic |
Phaseolus vulgaris; water deficit; micrometeorology; temperature; humidity Phaseolus vulgaris; deficiência hídrica; micrometeorologia; temperatura; umidade. |
description |
Micrometeorological modifications were evaluated in common bean (Phaseolus vulgaris L.) crops subject to varying conditions of soil-water availability, in an experiment conducted at Piracicaba, SP, Brazil, 22°42' south latitude and 576 m altitude. Common beans were sown in 30m x 20 m split-plots, on three dates (July 7, July 22, and August 4, 1983), each receiving two conditions of soil water availability with continued irrigation and with a period of water stress caused by an 18-day period without rain (Sept. 25 to Oct. 12). During the drought period, on days with high atmospheric evaporative demand, the temperature of the canopy surface (measured by a remote infrared sensor) was higher than air temperature close to the plants in the stressed crop, while the contrary occurred in the irrigated one. Soil water deficit increased the air temperature and the water vapor saturation deficit near the plants. Micrometeorological modifications were higher by the end of the drought period and during the warmer times of the days. They also were higher at the plots of the latest sowing date (lees developed plants). The micrometeorological conditions near the plants were in agreement with the crop energy balance. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-04-17 |
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/15917 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/15917 |
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/15917/10015 |
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.24, n.7, jul. 1989; 769-777 Pesquisa Agropecuária Brasileira; v.24, n.7, jul. 1989; 769-777 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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1793416716461539328 |