Mulching and soil tillage influence on the thermal behaviour of a Luvisol surface layer
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10174/8003 |
Resumo: | Important energy exchanges at soil surface regulate the thermal environment within top soil layer and the boundary layer above it. By this reason, the application of mulches or the modelling of micro relief by soil tillage are common practises to modify the thermal regime of a soil. The aim of this study is to compare the effect on thermal behaviour of a Luvisol resulting of soil tillage and the application of stubble mulch and, different amounts of straw mulch. For this purpose, experiments were performed from January to May 2007 in a field sowed with winter wheat. Temperatures were measured with copper-constantan (Type T) thermocouples placed over straw and over stubble, at soil surface and at 2, 4 and 8 cm depth. Temperatures above canopy were also recorded. Daily mean temperatures and thermal amplitudes in the top soil layer covered by straw mulch were smaller than those verified either by stubble mulch or with soil tillage. Daily minimum temperatures in mobilized plots or covered by stubble mulch were smaller than those verified in plots covered by straw mulch, therefore being the former treatments more susceptible to frost than the later ones. Thermal differences between the four plots decreased significantly with wheat growth. Implications of these techniques of soil temperature control for crop growth are also discussed. |
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Mulching and soil tillage influence on the thermal behaviour of a Luvisol surface layerMulchingSoi temperaturestraw mulchstubble mulchImportant energy exchanges at soil surface regulate the thermal environment within top soil layer and the boundary layer above it. By this reason, the application of mulches or the modelling of micro relief by soil tillage are common practises to modify the thermal regime of a soil. The aim of this study is to compare the effect on thermal behaviour of a Luvisol resulting of soil tillage and the application of stubble mulch and, different amounts of straw mulch. For this purpose, experiments were performed from January to May 2007 in a field sowed with winter wheat. Temperatures were measured with copper-constantan (Type T) thermocouples placed over straw and over stubble, at soil surface and at 2, 4 and 8 cm depth. Temperatures above canopy were also recorded. Daily mean temperatures and thermal amplitudes in the top soil layer covered by straw mulch were smaller than those verified either by stubble mulch or with soil tillage. Daily minimum temperatures in mobilized plots or covered by stubble mulch were smaller than those verified in plots covered by straw mulch, therefore being the former treatments more susceptible to frost than the later ones. Thermal differences between the four plots decreased significantly with wheat growth. Implications of these techniques of soil temperature control for crop growth are also discussed.2013-01-30T11:09:03Z2013-01-302009-09-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjecthttp://hdl.handle.net/10174/8003http://hdl.handle.net/10174/8003engAndrade, J., Alexandre, C. Basch, G. 2009 - Mulching and soil tillage influence on the thermal behaviour of a Luvisol surface layer. In: International Scientific Conference Sustainable Development and Bioclimate, 5th to 8th October 2009, Stara Lesna, Slovakiasimnaonaozalex@uevora.ptcal@uevora.ptgb@uevora.pt401Andrade, JoséAlexandre, CarlosBasch, Gottliebinfo: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:RCAAP2024-01-03T18:48:44Zoai:dspace.uevora.pt:10174/8003Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:02:25.795270Repositório 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 |
Mulching and soil tillage influence on the thermal behaviour of a Luvisol surface layer |
title |
Mulching and soil tillage influence on the thermal behaviour of a Luvisol surface layer |
spellingShingle |
Mulching and soil tillage influence on the thermal behaviour of a Luvisol surface layer Andrade, José Mulching Soi temperature straw mulch stubble mulch |
title_short |
Mulching and soil tillage influence on the thermal behaviour of a Luvisol surface layer |
title_full |
Mulching and soil tillage influence on the thermal behaviour of a Luvisol surface layer |
title_fullStr |
Mulching and soil tillage influence on the thermal behaviour of a Luvisol surface layer |
title_full_unstemmed |
Mulching and soil tillage influence on the thermal behaviour of a Luvisol surface layer |
title_sort |
Mulching and soil tillage influence on the thermal behaviour of a Luvisol surface layer |
author |
Andrade, José |
author_facet |
Andrade, José Alexandre, Carlos Basch, Gottlieb |
author_role |
author |
author2 |
Alexandre, Carlos Basch, Gottlieb |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Andrade, José Alexandre, Carlos Basch, Gottlieb |
dc.subject.por.fl_str_mv |
Mulching Soi temperature straw mulch stubble mulch |
topic |
Mulching Soi temperature straw mulch stubble mulch |
description |
Important energy exchanges at soil surface regulate the thermal environment within top soil layer and the boundary layer above it. By this reason, the application of mulches or the modelling of micro relief by soil tillage are common practises to modify the thermal regime of a soil. The aim of this study is to compare the effect on thermal behaviour of a Luvisol resulting of soil tillage and the application of stubble mulch and, different amounts of straw mulch. For this purpose, experiments were performed from January to May 2007 in a field sowed with winter wheat. Temperatures were measured with copper-constantan (Type T) thermocouples placed over straw and over stubble, at soil surface and at 2, 4 and 8 cm depth. Temperatures above canopy were also recorded. Daily mean temperatures and thermal amplitudes in the top soil layer covered by straw mulch were smaller than those verified either by stubble mulch or with soil tillage. Daily minimum temperatures in mobilized plots or covered by stubble mulch were smaller than those verified in plots covered by straw mulch, therefore being the former treatments more susceptible to frost than the later ones. Thermal differences between the four plots decreased significantly with wheat growth. Implications of these techniques of soil temperature control for crop growth are also discussed. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-09-01T00:00:00Z 2013-01-30T11:09:03Z 2013-01-30 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10174/8003 http://hdl.handle.net/10174/8003 |
url |
http://hdl.handle.net/10174/8003 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Andrade, J., Alexandre, C. Basch, G. 2009 - Mulching and soil tillage influence on the thermal behaviour of a Luvisol surface layer. In: International Scientific Conference Sustainable Development and Bioclimate, 5th to 8th October 2009, Stara Lesna, Slovakia sim nao nao zalex@uevora.pt cal@uevora.pt gb@uevora.pt 401 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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 |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799136508304687104 |