Base temperature estimates for lisianthus cultivars grown in different planting seasons

Authors

  • Daniela Höhn Universidade Federal de Pelotas, Faculdade de Agronomia Eliseu Maciel, Programa de Pós-Graduação em Sistemas de Produção Agrícola Familiar, Avenida Eliseu Maciel, s/no, Jardim América, CEP 96160-000 Capão do Leão, RS.
  • Roberta Marins Nogueira Peil Universidade Federal de Pelotas, Departmento de Fitotecnia, Avenida Eliseu Maciel, s/no, Jardim América, CEP 96160-000 Capão do Leão, RS.
  • Priscila Monalisa Marchi Faculdade Santo Ângelo, Rua do Seminário, no 188, Vera Cruz, CEP 98807-296 Santo Ângelo, RS.
  • Paulo Roberto Grolli Universidade Federal de Pelotas, Departmento de Fitotecnia, Avenida Eliseu Maciel, s/no, Jardim América, CEP 96160-000 Capão do Leão, RS.
  • Roberto Trentin Universidade Federal de Pelotas, Departmento de Fitotecnia, Avenida Eliseu Maciel, s/no, Jardim América, CEP 96160-000 Capão do Leão, RS.
  • Willian Silveira Shaun Universidade Federal de Pelotas, Avenida Eliseu Maciel, s/no, Jardim América, CEP 96160-000 Capão do Leão, RS.

Keywords:

Eustoma grandiflorum, degree-day, development ratio, phenology, thermal sum

Abstract

The objective of this work was to determine the base temperature of six lisianthus cultivars, grown at seven planting seasons in the municipality of Capão do Leão, in the state of Rio Grande do Sul, Brazil. The following cultivars were evaluated: DBL Echo Blue, Robella 2 Pink, Excalibur White, Excalibur 2 Blue Picotee, DBL Echo Champagne, and Arena III Red. Base temperature was determined from the air temperature data collected daily, in each planting season, fusing the lowest variability and development ratio methods. The base temperature for lisianthus cultivars is between 14.0 and 15.0ºC, by the lowest variability method, and between 13.9 and 15.0ºC by the development ratio method. The highest thermal accumulation was obseerved in the second planting season (from 11/23/2017 to 02/22/2018) for all cultivars, and lower air temperatures during the growing season resulted in longer production cycles. In the seven planting seasons, the highest base temperature is 15.0ºC, obtained for cultivar Arena III Red, and the is 14°C, for all lisianthus cultivars.

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Published

2024-03-22

How to Cite

Höhn, D., Peil, R. M. N., Marchi, P. M., Grolli, P. R., Trentin, R., & Shaun, W. S. (2024). Base temperature estimates for lisianthus cultivars grown in different planting seasons. Pesquisa Agropecuaria Brasileira, 58(AA), e03447. Retrieved from https://apct.sede.embrapa.br/pab/article/view/27535

Issue

V.58, Jan./Dec., 2023 :Continuos publication

Section

FLORICULTURE