Biblioteca Digital do Instituto Politécnico de Bragança   Instituto Politécnico de Bragança

Biblioteca Digital do IPB >
Escola Superior Agrária >
Produção e Tecnologia Vegetal >
PTV - Posters em Encontros Científicos Internacionais >

Please use this identifier to cite or link to this item:

Título: Modelling apple flower and fruit damage to frost
Autor: Abreu, J.P. Melo e
Ribeiro, A.C.
Snyder, R.L.
Issue Date: 2004
Editora: The Royal Veterinary and Agricultural University
Citação: Melo-Abreu, J.P.M de; Ribeiro, A.C.; Snyder, R.L. (2004) - Modelling apple flower and fruit damage to frost. In Proceedings of the VIII Congress of European Society for Agronomy: European Agriculture in a Global Context. Copenhaga
Resumo: Good quality apples are grown in relatively cold areas. However, frost frequently causes damage to flowers and small fruits. When the percentage of frost damage losses is higher than the thinning requirement of the cultivar, production is reduced. In addition to reducing yield, frost damage to the skin and malformation of the fruits often devalues the quality and reduces profits. Critical temperature tables in relation to phenological stage are available for apples and other deciduous crops (Ballard and Proebsting, 1978; Proebsting and Mills, 1978). Some of the data came from field observations using temperatures from standard shelters and some came from excised branch chamber studies. Since plants adapt to the short term temperature environment and there are biological and physical phenomena that influence the critical damage temperature, extrapolation of these critical temperatures to a given crop and environment is questionable. For a thorough discussion see Snyder et al. (2004). In this paper, a program that predicts the fraction of damage to flowers and fruits, and hence the reduction of high quality production, is presented and validated using minimum temperature data and the observed fraction of damaged apple flowers of three cultivars from 13 locations over two years of multiple frost events.
Arbitragem científica: yes
Appears in Collections:PTV - Posters em Encontros Científicos Internacionais

Files in This Item:

File Description SizeFormat
Poster_ESA 2004 Congress.pdf455,58 kBAdobe PDFView/Open

Please give feedback about this item
FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpace
Formato BibTex MendeleyEndnote Logotipo do DeGóis 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.


© Instituto Politécnico de Bragança - Biblioteca Digital - Feedback - Statistics
Promotores do RCAAP   Financiadores do RCAAP

Fundação para a Ciência e a Tecnologia Universidade do Minho   Governo Português Ministério da Educação e Ciência PO Sociedade do Conhecimento (POSC) Portal oficial da União Europeia