Base temperature, cycle duration, and thermal constant for yacon culture

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dc.creatorRamon Amaro de Sales
dc.creatorEvandro Chaves de Oliveira
dc.creatorAlexandre Cândido Xavier
dc.creatorFábio Luiz de Oliveira
dc.creatorJosé Eduardo Macedo Pezzopane
dc.creatorDiego Mathias Natal da Silva
dc.creatorSávio da Silva Berilli
dc.date2022
dc.date.accessioned2026-07-07T03:52:00Z
dc.descriptionYacon 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.
dc.formatapplication/pdf
dc.identifier1679-9275
dc.identifierhttps://www.redalyc.org/articulo.oa?id=303071489002
dc.identifierhttps://www.redalyc.org/journal/3030/303071489002/
dc.identifierhttps://www.redalyc.org/journal/3030/303071489002/html/
dc.identifierhttps://www.redalyc.org/journal/3030/303071489002/303071489002.epub
dc.identifierhttps://www.redalyc.org/journal/3030/303071489002/movil
dc.identifier10.4025/actasciagron.v44i1.52623
dc.identifier.urihttp://hdl.handle.net/123456789/445360
dc.languageen
dc.publisherUniversidade Estadual de Maringá
dc.relationhttp://www.redalyc.org/revista.oa?id=3030
dc.rightsActa Scientiarum. Agronomy
dc.sourceActa Scientiarum. Agronomy (Brasil) Vol.44
dc.subjectAgrociencias
dc.titleBase temperature, cycle duration, and thermal constant for yacon culture
dc.typeartículo científico

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Acta Scientiarum. Agronomy - Universidade Estadual de Maringá