Data/hora: 07/06/2024 13:58:08

Biblioteca(s): | Epagri-Sede.
Data corrente: | 10/08/2018
Data da última atualização: | 10/08/2018
Autoria: | RICCE, W. S.; ROBERTO, S. R.; PADRÃO, G. A.; CARAMORI, P. H.
Título: | Grape harvest periods based on degree-days in Paraná state, Brazil.
Ano de publicação: | 2018
Fonte/Imprenta: | Agronomy Science and Biotechnology, Londrina, PR, v. 4, n. 2, p. 59-69, 2018.
Idioma: | Inglês
Conteúdo: | Grape harvest period can be decisive for greater profitability to grape growers and for production quality. Thus, the objective of this work was to evaluate grape harvest periods based on degree-days (DD) during different pruning periods and under the risk of frosts in the State of Paraná. Based on a series of maximum and minimum temperatures data from 21 conventional stations managed by IAPAR, from 1976 to 2010, this study evaluated the risk of frosts and the degree -days required to complete grapevine cycle in several regions of the state. Results showed that the occurrence of frosts is a restrictive factor for vine pruning in regions with higher altitudes and latitudes. For  cultivars  with low degree-days needs, results showed that in the Northeast of the state,  harvest could occur from the second ten-day-period of September, when  winter pruning  is performed on  July 5, making the commercialization during periods of less grapes offer. In this same region,  cultivars  with more needs of degree-days could be harvested between the first and second ten-day period of November. For the Central, Southern and Eastern regions, the risk of frosts in July is high and pruning may result in cold damages to new shoots  and vines. Therefore, harvest must occur from January to May in these regions.
Palavras-Chave: | Agroclimatic zoning; commercialization; frost; pruning period; Vitis sp.
Categoria do assunto: | E Economia e Indústria Agrícola
URL: | http://intranetdoc.epagri.sc.gov.br/producao_tecnico_cientifica/DOC_41080.pdf
Registro original: | Epagri-Sede (Epagri-Sede)
Exemplares: | Epagri-Sede - (102590-1) - UPC - AP - DD -  -  -  - DIS