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| Format: | Artículo científico |
| Language: | pt |
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Universidade Federal de Goiás
2010
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| Online Access: | https://www.redalyc.org/articulo.oa?id=253020107014 |
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Table of Contents:
- COMPARAÇÃO DE MÉTODOS PARA ESTIMATIVA DO PLASTOCRONO EM ALGODOEIRO EM CONDIÇÕES TROPICAIS Luiz Carlos Pereira José Holanda Campelo Júnior Alessandro Ferronato Agrociencias day degrees beta function thermal units physiological age The time for growth and development of plants is influenced by air temperature and other environmental variables. This research was based on three methods for calculating plastochron timing of cotton plant under tropical weather conditions, using thermal units accumulation as variable, calculated from the average daily air temperature, considering the concepts of degrees-day and accumulated thermal time. Two methods for calculating average daily temperature and three methods for obtaining Degrees-Day values and accumulated thermal time were used. Whereas the accumulated thermal time is a method that considers that the growth and development of plants have linear response to the air temperature influence, it was also tested a non-linear approach, as described by Wang & Engel (1998), called, in this study, â function. For the â function, average daytime temperatures were also used, obtained by the two different calculation methods. The â function was the best option for estimating plastochron and the method for calculating the Average Daily Temperature influenced the results. 2010 artículo científico 1517-6398 https://www.redalyc.org/articulo.oa?id=253020107014 pt http://www.redalyc.org/revista.oa?id=2530 Pesquisa Agropecuária Tropical application/pdf Universidade Federal de Goiás Pesquisa Agropecuária Tropical (Brasil) Num.2 Vol.40