Base temperature, cycle duration, and thermal constant for yacon culture
Main Author: | |
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Publication Date: | 2021 |
Other Authors: | , , , , , |
Format: | Article |
Language: | eng |
Source: | Acta Scientiarum. Agronomy (Online) |
Download full: | http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/52623 |
Summary: | Yacon is a perennial herbaceous plant that naturally occurs in South America at altitudes ranging from 2,000 m to 3,100 m above sea level. The yacon culture has recently grown in popularity as it has high productive potential in mild climates and multiple benefits to human health. This study aimed to determine the lower and upper base temperatures, cycle duration, and thermal constant for the yacon culture, based on phenological data from field experiments that were carried out during three growing seasons (fall, winter, and spring) in 2013. The experiments were conducted in the municipality of Ibatiba in the state of Espírito Santo, Brazil, in a randomized block design with four replicates. The lower base temperature was determined using methods of the lowest standard deviation in days and degree-days, relative development, and variation coefficient in degree-days for two subperiods: emergence to maturation, and onset of tuberization to maturation. The upper base temperature was determined by the standard deviation and coefficient of variation methods, both in degrees-days. The relationship between meteorological elements and the onset of tuberization was also investigated. The lower base temperature values determined for yacon were 12.5ºC in the two subperiods studied with a base temperature above 34.0ºC. The productivity of these tuberous roots was higher in the fall because of the longer cycle, lower temperature, and lower photoperiod. In turn, a higher thermal sum was needed to initiate tuberization with the delay of planting. |
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Base temperature, cycle duration, and thermal constant for yacon culture Base temperature, cycle duration, and thermal constant for yacon culture Smallanthus sonchifolius; phenology; degree days; photoperiod.Smallanthus sonchifolius; phenology; degree days; photoperiod.Yacon is a perennial herbaceous plant that naturally occurs in South America at altitudes ranging from 2,000 m to 3,100 m above sea level. The yacon culture has recently grown in popularity as it has high productive potential in mild climates and multiple benefits to human health. This study aimed to determine the lower and upper base temperatures, cycle duration, and thermal constant for the yacon culture, based on phenological data from field experiments that were carried out during three growing seasons (fall, winter, and spring) in 2013. The experiments were conducted in the municipality of Ibatiba in the state of Espírito Santo, Brazil, in a randomized block design with four replicates. The lower base temperature was determined using methods of the lowest standard deviation in days and degree-days, relative development, and variation coefficient in degree-days for two subperiods: emergence to maturation, and onset of tuberization to maturation. The upper base temperature was determined by the standard deviation and coefficient of variation methods, both in degrees-days. The relationship between meteorological elements and the onset of tuberization was also investigated. The lower base temperature values determined for yacon were 12.5ºC in the two subperiods studied with a base temperature above 34.0ºC. The productivity of these tuberous roots was higher in the fall because of the longer cycle, lower temperature, and lower photoperiod. In turn, a higher thermal sum was needed to initiate tuberization with the delay of planting.Yacon is a perennial herbaceous plant that naturally occurs in South America at altitudes ranging from 2,000 m to 3,100 m above sea level. The yacon culture has recently grown in popularity as it has high productive potential in mild climates and multiple benefits to human health. This study aimed to determine the lower and upper base temperatures, cycle duration, and thermal constant for the yacon culture, based on phenological data from field experiments that were carried out during three growing seasons (fall, winter, and spring) in 2013. The experiments were conducted in the municipality of Ibatiba in the state of Espírito Santo, Brazil, in a randomized block design with four replicates. The lower base temperature was determined using methods of the lowest standard deviation in days and degree-days, relative development, and variation coefficient in degree-days for two subperiods: emergence to maturation, and onset of tuberization to maturation. The upper base temperature was determined by the standard deviation and coefficient of variation methods, both in degrees-days. The relationship between meteorological elements and the onset of tuberization was also investigated. The lower base temperature values determined for yacon were 12.5ºC in the two subperiods studied with a base temperature above 34.0ºC. The productivity of these tuberous roots was higher in the fall because of the longer cycle, lower temperature, and lower photoperiod. In turn, a higher thermal sum was needed to initiate tuberization with the delay of planting.Universidade Estadual de Maringá2021-12-21info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5262310.4025/actasciagron.v44i1.52623Acta Scientiarum. Agronomy; Vol 44 (2022): Publicação contínua; e52623Acta Scientiarum. Agronomy; v. 44 (2022): Publicação contínua; e526231807-86211679-9275reponame:Acta Scientiarum. Agronomy (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMenghttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/52623/751375153356Copyright (c) 2022 Acta Scientiarum. Agronomyhttps://creativecommons.org/licenses/by-nc-nd/4.0info:eu-repo/semantics/openAccess Sales, Ramon Amaro deOliveira, Evandro Chaves de Xavier, Alexandre Cândido Oliveira, Fábio Luiz de Pezzopane, José Eduardo Macedo Silva, Diego Mathias Natal daBerilli, Sávio da Silva 2022-02-16T21:46:58Zoai:periodicos.uem.br/ojs:article/52623Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgronPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/oaiactaagron@uem.br||actaagron@uem.br|| edamasio@uem.br1807-86211679-9275opendoar:2022-02-16T21:46:58Acta Scientiarum. Agronomy (Online) - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Base temperature, cycle duration, and thermal constant for yacon culture Base temperature, cycle duration, and thermal constant for yacon culture |
title |
Base temperature, cycle duration, and thermal constant for yacon culture |
spellingShingle |
Base temperature, cycle duration, and thermal constant for yacon culture Sales, Ramon Amaro de Smallanthus sonchifolius; phenology; degree days; photoperiod. Smallanthus sonchifolius; phenology; degree days; photoperiod. |
title_short |
Base temperature, cycle duration, and thermal constant for yacon culture |
title_full |
Base temperature, cycle duration, and thermal constant for yacon culture |
title_fullStr |
Base temperature, cycle duration, and thermal constant for yacon culture |
title_full_unstemmed |
Base temperature, cycle duration, and thermal constant for yacon culture |
title_sort |
Base temperature, cycle duration, and thermal constant for yacon culture |
author |
Sales, Ramon Amaro de |
author_facet |
Sales, Ramon Amaro de Oliveira, Evandro Chaves de Xavier, Alexandre Cândido Oliveira, Fábio Luiz de Pezzopane, José Eduardo Macedo Silva, Diego Mathias Natal da Berilli, Sávio da Silva |
author_role |
author |
author2 |
Oliveira, Evandro Chaves de Xavier, Alexandre Cândido Oliveira, Fábio Luiz de Pezzopane, José Eduardo Macedo Silva, Diego Mathias Natal da Berilli, Sávio da Silva |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Sales, Ramon Amaro de Oliveira, Evandro Chaves de Xavier, Alexandre Cândido Oliveira, Fábio Luiz de Pezzopane, José Eduardo Macedo Silva, Diego Mathias Natal da Berilli, Sávio da Silva |
dc.subject.por.fl_str_mv |
Smallanthus sonchifolius; phenology; degree days; photoperiod. Smallanthus sonchifolius; phenology; degree days; photoperiod. |
topic |
Smallanthus sonchifolius; phenology; degree days; photoperiod. Smallanthus sonchifolius; phenology; degree days; photoperiod. |
description |
Yacon is a perennial herbaceous plant that naturally occurs in South America at altitudes ranging from 2,000 m to 3,100 m above sea level. The yacon culture has recently grown in popularity as it has high productive potential in mild climates and multiple benefits to human health. This study aimed to determine the lower and upper base temperatures, cycle duration, and thermal constant for the yacon culture, based on phenological data from field experiments that were carried out during three growing seasons (fall, winter, and spring) in 2013. The experiments were conducted in the municipality of Ibatiba in the state of Espírito Santo, Brazil, in a randomized block design with four replicates. The lower base temperature was determined using methods of the lowest standard deviation in days and degree-days, relative development, and variation coefficient in degree-days for two subperiods: emergence to maturation, and onset of tuberization to maturation. The upper base temperature was determined by the standard deviation and coefficient of variation methods, both in degrees-days. The relationship between meteorological elements and the onset of tuberization was also investigated. The lower base temperature values determined for yacon were 12.5ºC in the two subperiods studied with a base temperature above 34.0ºC. The productivity of these tuberous roots was higher in the fall because of the longer cycle, lower temperature, and lower photoperiod. In turn, a higher thermal sum was needed to initiate tuberization with the delay of planting. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-12-21 |
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 |
http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/52623 10.4025/actasciagron.v44i1.52623 |
url |
http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/52623 |
identifier_str_mv |
10.4025/actasciagron.v44i1.52623 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/52623/751375153356 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2022 Acta Scientiarum. Agronomy https://creativecommons.org/licenses/by-nc-nd/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2022 Acta Scientiarum. Agronomy https://creativecommons.org/licenses/by-nc-nd/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Estadual de Maringá |
publisher.none.fl_str_mv |
Universidade Estadual de Maringá |
dc.source.none.fl_str_mv |
Acta Scientiarum. Agronomy; Vol 44 (2022): Publicação contínua; e52623 Acta Scientiarum. Agronomy; v. 44 (2022): Publicação contínua; e52623 1807-8621 1679-9275 reponame:Acta Scientiarum. Agronomy (Online) instname:Universidade Estadual de Maringá (UEM) instacron:UEM |
instname_str |
Universidade Estadual de Maringá (UEM) |
instacron_str |
UEM |
institution |
UEM |
reponame_str |
Acta Scientiarum. Agronomy (Online) |
collection |
Acta Scientiarum. Agronomy (Online) |
repository.name.fl_str_mv |
Acta Scientiarum. Agronomy (Online) - Universidade Estadual de Maringá (UEM) |
repository.mail.fl_str_mv |
actaagron@uem.br||actaagron@uem.br|| edamasio@uem.br |
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1799305911780507648 |