Influência da temperatura e do teor de humidade do solo na área foliar e acumulação de matéria seca durante o estabelecimento da ervilha, do milho e do girassol
Autor(a) principal: | |
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Data de Publicação: | 2007 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.5/1048 |
Resumo: | Leaf area expansion and accumulation of dry matter during the establishment of pea(Pisum sativum L., var. Ballet), maize (Zea mays L., var. Lorena) and sunflower (Helianthus annuus L., var. Florasol) were studied at different temperatures and soil moisture contents in a Vertisol (Lisboa) and a Luvisol (Évora) from June 1995 to November 1996. Measurements were made of soil temperature at 2 and 4 cm depth, air temperature and soil water content. Leaf area per plant was estimated from measurements of the length and width of each leaf. Above ground seedling dry matter was weighed after oven drying. Data analysis was based on the thermal time concept. For water contents above 50% of the available capacity of each soil, leaf area of pea and maize increased linearly with accumulated temperature while that of sunflower increased exponentially. Dry matter of all crops increased exponentially with accumulated temperature. Significant differences between the two types of soil were found on the “initiation of leaf area expansion” of pea and sunflower, on the “thermal-rate for leaf area expansion” of maize and on the dry matter accumulation of pea and maize seedlings. The “initiation of leaf expansion” of pea occurred earlier in soil Cb while that of sunflower occurred earlier in soil Pmg. Leaf area expansion of maize was faster in soil Pmg. Dry matter accumulation of pea was faster in soil Cb while that of sunflower was faster in soilPmg. In both soils, low soil water contents reduced leaf area expansion and dry matter accumulation of the crops. |
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Influência da temperatura e do teor de humidade do solo na área foliar e acumulação de matéria seca durante o estabelecimento da ervilha, do milho e do girassolInfluence of temperature and soil moisture on leaf area and dry matter accumulation during establishment of pea, maize and sunflowerpeamaizesunflowerleaf areasoil moisturedry matter accumulationtemperatureervilhamilhogirassolteor de humidade do soloarea foliarmateria secatemperaturaLeaf area expansion and accumulation of dry matter during the establishment of pea(Pisum sativum L., var. Ballet), maize (Zea mays L., var. Lorena) and sunflower (Helianthus annuus L., var. Florasol) were studied at different temperatures and soil moisture contents in a Vertisol (Lisboa) and a Luvisol (Évora) from June 1995 to November 1996. Measurements were made of soil temperature at 2 and 4 cm depth, air temperature and soil water content. Leaf area per plant was estimated from measurements of the length and width of each leaf. Above ground seedling dry matter was weighed after oven drying. Data analysis was based on the thermal time concept. For water contents above 50% of the available capacity of each soil, leaf area of pea and maize increased linearly with accumulated temperature while that of sunflower increased exponentially. Dry matter of all crops increased exponentially with accumulated temperature. Significant differences between the two types of soil were found on the “initiation of leaf area expansion” of pea and sunflower, on the “thermal-rate for leaf area expansion” of maize and on the dry matter accumulation of pea and maize seedlings. The “initiation of leaf expansion” of pea occurred earlier in soil Cb while that of sunflower occurred earlier in soil Pmg. Leaf area expansion of maize was faster in soil Pmg. Dry matter accumulation of pea was faster in soil Cb while that of sunflower was faster in soilPmg. In both soils, low soil water contents reduced leaf area expansion and dry matter accumulation of the crops.Sociedade de Ciências Agrárias de PortugalRepositório da Universidade de LisboaAbreu, Francisco GonçalvesAndrade, J.A.2009-06-29T10:28:31Z20072007-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.5/1048por"Revista de Ciências Agrárias". ISSN 0871-018X. 30:2 (2007) 27-370871-018Xinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-03-06T14:32:19Zoai:www.repository.utl.pt:10400.5/1048Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T16:49:16.150097Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Influência da temperatura e do teor de humidade do solo na área foliar e acumulação de matéria seca durante o estabelecimento da ervilha, do milho e do girassol Influence of temperature and soil moisture on leaf area and dry matter accumulation during establishment of pea, maize and sunflower |
title |
Influência da temperatura e do teor de humidade do solo na área foliar e acumulação de matéria seca durante o estabelecimento da ervilha, do milho e do girassol |
spellingShingle |
Influência da temperatura e do teor de humidade do solo na área foliar e acumulação de matéria seca durante o estabelecimento da ervilha, do milho e do girassol Abreu, Francisco Gonçalves pea maize sunflower leaf area soil moisture dry matter accumulation temperature ervilha milho girassol teor de humidade do solo area foliar materia seca temperatura |
title_short |
Influência da temperatura e do teor de humidade do solo na área foliar e acumulação de matéria seca durante o estabelecimento da ervilha, do milho e do girassol |
title_full |
Influência da temperatura e do teor de humidade do solo na área foliar e acumulação de matéria seca durante o estabelecimento da ervilha, do milho e do girassol |
title_fullStr |
Influência da temperatura e do teor de humidade do solo na área foliar e acumulação de matéria seca durante o estabelecimento da ervilha, do milho e do girassol |
title_full_unstemmed |
Influência da temperatura e do teor de humidade do solo na área foliar e acumulação de matéria seca durante o estabelecimento da ervilha, do milho e do girassol |
title_sort |
Influência da temperatura e do teor de humidade do solo na área foliar e acumulação de matéria seca durante o estabelecimento da ervilha, do milho e do girassol |
author |
Abreu, Francisco Gonçalves |
author_facet |
Abreu, Francisco Gonçalves Andrade, J.A. |
author_role |
author |
author2 |
Andrade, J.A. |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Repositório da Universidade de Lisboa |
dc.contributor.author.fl_str_mv |
Abreu, Francisco Gonçalves Andrade, J.A. |
dc.subject.por.fl_str_mv |
pea maize sunflower leaf area soil moisture dry matter accumulation temperature ervilha milho girassol teor de humidade do solo area foliar materia seca temperatura |
topic |
pea maize sunflower leaf area soil moisture dry matter accumulation temperature ervilha milho girassol teor de humidade do solo area foliar materia seca temperatura |
description |
Leaf area expansion and accumulation of dry matter during the establishment of pea(Pisum sativum L., var. Ballet), maize (Zea mays L., var. Lorena) and sunflower (Helianthus annuus L., var. Florasol) were studied at different temperatures and soil moisture contents in a Vertisol (Lisboa) and a Luvisol (Évora) from June 1995 to November 1996. Measurements were made of soil temperature at 2 and 4 cm depth, air temperature and soil water content. Leaf area per plant was estimated from measurements of the length and width of each leaf. Above ground seedling dry matter was weighed after oven drying. Data analysis was based on the thermal time concept. For water contents above 50% of the available capacity of each soil, leaf area of pea and maize increased linearly with accumulated temperature while that of sunflower increased exponentially. Dry matter of all crops increased exponentially with accumulated temperature. Significant differences between the two types of soil were found on the “initiation of leaf area expansion” of pea and sunflower, on the “thermal-rate for leaf area expansion” of maize and on the dry matter accumulation of pea and maize seedlings. The “initiation of leaf expansion” of pea occurred earlier in soil Cb while that of sunflower occurred earlier in soil Pmg. Leaf area expansion of maize was faster in soil Pmg. Dry matter accumulation of pea was faster in soil Cb while that of sunflower was faster in soilPmg. In both soils, low soil water contents reduced leaf area expansion and dry matter accumulation of the crops. |
publishDate |
2007 |
dc.date.none.fl_str_mv |
2007 2007-01-01T00:00:00Z 2009-06-29T10:28:31Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.5/1048 |
url |
http://hdl.handle.net/10400.5/1048 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
"Revista de Ciências Agrárias". ISSN 0871-018X. 30:2 (2007) 27-37 0871-018X |
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 |
Sociedade de Ciências Agrárias de Portugal |
publisher.none.fl_str_mv |
Sociedade de Ciências Agrárias de Portugal |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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