Optimizing the establishment of bean and maize varieties in tropical environments

Detalhes bibliográficos
Autor(a) principal: Andrade, J.A.
Data de Publicação: 2021
Outros Autores: Mateus, M., Cadima, J.F., Abreu, F.G.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.5/22507
Resumo: 7th International Conference on Agricultural and Biological Sciences (ABS 2021)
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spelling Optimizing the establishment of bean and maize varieties in tropical environmentsgermination rateemergence rategermination sizeemergence sizespread of germinationspread of emergenceoptimal establishmenttemperaturethermal time7th International Conference on Agricultural and Biological Sciences (ABS 2021)The successful establishment of any crop is the initial indication of its productivity. Optimizing the establishment of a crop implies ensuring generalized, fast and concentrated emergence. This work studies optimal temperature ranges, under non-limiting water conditions, for both germination and emergence of two bean (Phaseolus vulgaris L.) varieties (catarina and ervilha) and two maize (Zea mays L.) varieties (matuba and sam3). Experiments used a thermogradient plate. Petri dishes were used for germination experiments. Emergence experiments were performed in aluminium containers filled with packed portions of a sandy loam clay textured soil. Size, speed and spread of both germination and emergence were measured at different temperatures by Cu-CuNi thermocouples. Thermal ranges with optimal counts of both germination and emergence [To1 sz, To2 sz] were identified using a flattened bell curve function. Speed was maximized for either germination or emergence over thermal ranges [To1 sp, To2 sp] defined using the plateau model to relate either germination or emergence rates with temperature. Ranges along which the spread of both germination and emergence are nearly minimized [To1 sd, To2 sd] were identified with the aid of even-degree polynomials. The intersection of all three thermal ranges gave rise to optimal temperature ranges [To1, To2] for germination (OTRG) of the four varieties in study and for emergence (OTRE) of three of them. In general, the lower thermal limit of OTRG was determined by speed (To1 = To1 sp) and the upper thermal limit by size (To2 = To2 sz). OTRE begins at To1 sp for ervilha and sam3 and at To1 sd for catarina and ends at To2 sz for catarina and at To2 sd for the others. The endpoints and length of both the OTRG and OTRE were also found to be crop-dependent. Thus, farmers can choose between crops and optimize their establishment. The identification of these parameters may also be useful in assessing weather forecasts and for warning systems and agro-climatic zoning. The influence of the substrate used in each experiment was also discussedIOP PublishingRepositório da Universidade de LisboaAndrade, J.A.Mateus, M.Cadima, J.F.Abreu, F.G.2021-11-05T10:51:33Z20212021-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.5/22507engJ A Andrade et al 2021 IOP Conf. Ser.: Earth Environ. Sci. 858 01200110.1088/1755-1315/858/1/012001info: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:RCAAP2023-03-06T14:52:02Zoai:www.repository.utl.pt:10400.5/22507Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T17:06:55.049871Repositório 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 Optimizing the establishment of bean and maize varieties in tropical environments
title Optimizing the establishment of bean and maize varieties in tropical environments
spellingShingle Optimizing the establishment of bean and maize varieties in tropical environments
Andrade, J.A.
germination rate
emergence rate
germination size
emergence size
spread of germination
spread of emergence
optimal establishment
temperature
thermal time
title_short Optimizing the establishment of bean and maize varieties in tropical environments
title_full Optimizing the establishment of bean and maize varieties in tropical environments
title_fullStr Optimizing the establishment of bean and maize varieties in tropical environments
title_full_unstemmed Optimizing the establishment of bean and maize varieties in tropical environments
title_sort Optimizing the establishment of bean and maize varieties in tropical environments
author Andrade, J.A.
author_facet Andrade, J.A.
Mateus, M.
Cadima, J.F.
Abreu, F.G.
author_role author
author2 Mateus, M.
Cadima, J.F.
Abreu, F.G.
author2_role author
author
author
dc.contributor.none.fl_str_mv Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Andrade, J.A.
Mateus, M.
Cadima, J.F.
Abreu, F.G.
dc.subject.por.fl_str_mv germination rate
emergence rate
germination size
emergence size
spread of germination
spread of emergence
optimal establishment
temperature
thermal time
topic germination rate
emergence rate
germination size
emergence size
spread of germination
spread of emergence
optimal establishment
temperature
thermal time
description 7th International Conference on Agricultural and Biological Sciences (ABS 2021)
publishDate 2021
dc.date.none.fl_str_mv 2021-11-05T10:51:33Z
2021
2021-01-01T00:00:00Z
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/10400.5/22507
url http://hdl.handle.net/10400.5/22507
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv J A Andrade et al 2021 IOP Conf. Ser.: Earth Environ. Sci. 858 012001
10.1088/1755-1315/858/1/012001
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 IOP Publishing
publisher.none.fl_str_mv IOP Publishing
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
instname_str 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
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