Accumulated degree-days to reach the main plant developmental stages of irrigated rice cultivars.
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
Texto Completo: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1150411 |
Resumo: | The objective of this study was to determine the accumulated degree-days (DD) to reach six plant developmental stages (PDS) of irrigated rice cultivars. Field experiments were carried out at the Estação Experimental Terras Baixas (ETB) of Embrapa Clima Temperado, located in the municipality of Capão do Leão, State of Rio Grande do Sul, Brazil, during 12 crop seasons, using six sowing dates in each. Ten plants of each cultivar were tagged and had each of the PDS monitored throughout the crop cycle. The DD (°C day) were calculated as the sum of the daily values resulting from the difference between mean air temperature (Tm) and the minimal base temperature (Tb = 11 °C), from the emergence until the date of each PDS. The results indicated that the DD to reach anthesis (R4) represented, in the average, about 77% of the total cycle (R9), ranging from 73% for IRGA 421 to 91% for Epagri 109. The vegetative period (from E-emergence to R1) is the one with the highest average DD value, around 48% of the total cycle, presenting also the largest differences between cultivars when compared to the reproductive period 1 (R1-R4) and the reproductive period 2 (R4-R9). |
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Accumulated degree-days to reach the main plant developmental stages of irrigated rice cultivars.Oryza sativa LThermal timeGraus-diasArroz IrrigadoPhenologyThe objective of this study was to determine the accumulated degree-days (DD) to reach six plant developmental stages (PDS) of irrigated rice cultivars. Field experiments were carried out at the Estação Experimental Terras Baixas (ETB) of Embrapa Clima Temperado, located in the municipality of Capão do Leão, State of Rio Grande do Sul, Brazil, during 12 crop seasons, using six sowing dates in each. Ten plants of each cultivar were tagged and had each of the PDS monitored throughout the crop cycle. The DD (°C day) were calculated as the sum of the daily values resulting from the difference between mean air temperature (Tm) and the minimal base temperature (Tb = 11 °C), from the emergence until the date of each PDS. The results indicated that the DD to reach anthesis (R4) represented, in the average, about 77% of the total cycle (R9), ranging from 73% for IRGA 421 to 91% for Epagri 109. The vegetative period (from E-emergence to R1) is the one with the highest average DD value, around 48% of the total cycle, presenting also the largest differences between cultivars when compared to the reproductive period 1 (R1-R4) and the reproductive period 2 (R4-R9).SILVIO STEINMETZ, CPACT; ARIANO MARTINS DE MAGALHAES JUNIOR, CPACT; PAULO RICARDO REIS FAGUNDES, CPACT; SANTIAGO VIANNA CUADRA, CNPTIA; IVAN RODRIGUES DE ALMEIDA, CNPTIA.STEINMETZ, S.MAGALHAES JUNIOR, A. M. deFAGUNDES, P. R. R.CUADRA, S. V.ALMEIDA, I. R. de2022-12-28T05:54:06Z2022-12-28T05:54:06Z2022-12-272022info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleAgrometeoros, Passo Fundo, v. 30, e027129, 2022.http://www.alice.cnptia.embrapa.br/alice/handle/doc/1150411DOI: http://dx.doi.org/10.31062/agrom.v30.e027129enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2022-12-28T05:54:06Zoai:www.alice.cnptia.embrapa.br:doc/1150411Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542022-12-28T05:54:06falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542022-12-28T05:54:06Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Accumulated degree-days to reach the main plant developmental stages of irrigated rice cultivars. |
title |
Accumulated degree-days to reach the main plant developmental stages of irrigated rice cultivars. |
spellingShingle |
Accumulated degree-days to reach the main plant developmental stages of irrigated rice cultivars. STEINMETZ, S. Oryza sativa L Thermal time Graus-dias Arroz Irrigado Phenology |
title_short |
Accumulated degree-days to reach the main plant developmental stages of irrigated rice cultivars. |
title_full |
Accumulated degree-days to reach the main plant developmental stages of irrigated rice cultivars. |
title_fullStr |
Accumulated degree-days to reach the main plant developmental stages of irrigated rice cultivars. |
title_full_unstemmed |
Accumulated degree-days to reach the main plant developmental stages of irrigated rice cultivars. |
title_sort |
Accumulated degree-days to reach the main plant developmental stages of irrigated rice cultivars. |
author |
STEINMETZ, S. |
author_facet |
STEINMETZ, S. MAGALHAES JUNIOR, A. M. de FAGUNDES, P. R. R. CUADRA, S. V. ALMEIDA, I. R. de |
author_role |
author |
author2 |
MAGALHAES JUNIOR, A. M. de FAGUNDES, P. R. R. CUADRA, S. V. ALMEIDA, I. R. de |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
SILVIO STEINMETZ, CPACT; ARIANO MARTINS DE MAGALHAES JUNIOR, CPACT; PAULO RICARDO REIS FAGUNDES, CPACT; SANTIAGO VIANNA CUADRA, CNPTIA; IVAN RODRIGUES DE ALMEIDA, CNPTIA. |
dc.contributor.author.fl_str_mv |
STEINMETZ, S. MAGALHAES JUNIOR, A. M. de FAGUNDES, P. R. R. CUADRA, S. V. ALMEIDA, I. R. de |
dc.subject.por.fl_str_mv |
Oryza sativa L Thermal time Graus-dias Arroz Irrigado Phenology |
topic |
Oryza sativa L Thermal time Graus-dias Arroz Irrigado Phenology |
description |
The objective of this study was to determine the accumulated degree-days (DD) to reach six plant developmental stages (PDS) of irrigated rice cultivars. Field experiments were carried out at the Estação Experimental Terras Baixas (ETB) of Embrapa Clima Temperado, located in the municipality of Capão do Leão, State of Rio Grande do Sul, Brazil, during 12 crop seasons, using six sowing dates in each. Ten plants of each cultivar were tagged and had each of the PDS monitored throughout the crop cycle. The DD (°C day) were calculated as the sum of the daily values resulting from the difference between mean air temperature (Tm) and the minimal base temperature (Tb = 11 °C), from the emergence until the date of each PDS. The results indicated that the DD to reach anthesis (R4) represented, in the average, about 77% of the total cycle (R9), ranging from 73% for IRGA 421 to 91% for Epagri 109. The vegetative period (from E-emergence to R1) is the one with the highest average DD value, around 48% of the total cycle, presenting also the largest differences between cultivars when compared to the reproductive period 1 (R1-R4) and the reproductive period 2 (R4-R9). |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-12-28T05:54:06Z 2022-12-28T05:54:06Z 2022-12-27 2022 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Agrometeoros, Passo Fundo, v. 30, e027129, 2022. http://www.alice.cnptia.embrapa.br/alice/handle/doc/1150411 DOI: http://dx.doi.org/10.31062/agrom.v30.e027129 |
identifier_str_mv |
Agrometeoros, Passo Fundo, v. 30, e027129, 2022. DOI: http://dx.doi.org/10.31062/agrom.v30.e027129 |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1150411 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
collection |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
repository.name.fl_str_mv |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
cg-riaa@embrapa.br |
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1794503536991535104 |