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Climate, winter chill, and decision-making in sweet cherry production


Measham, PF and Quentin, AG and MacNair, N, Climate, winter chill, and decision-making in sweet cherry production, Hortscience, 49, (3) pp. 254-259. ISSN 0018-5345 (2014) [Refereed Article]

Copyright Statement

Copyright2014 by the American Society for Horticultural Science

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DOI: doi:10.21273/HORTSCI.49.3.254


Growers naturally adapt and manage production for unpredictable and variable seasonal climates; however, the projected changes in climate introduce a new concern with increased variability in the frequency and severity of extreme climatic events and sustained changes in temperature. This study addresses the complexity of providing clear winter chill information in a form that facilitates grower assimilation and application of that information, ultimately to assist decision-making around variety selection and management. This study established the chill requirement for two commonly grown sweet cherry (Prunus avium L.) varieties: ‘Kordia’ and ‘Sweetheart’, and explored the uniformity of bud burst in each. It was found that varieties required different chill hours and that ‘Sweetheart’ reached mean time to, and maximum total bud burst, faster than ‘Kordia’, but no subsequent impact on uniformity of maturity at harvest. There was no significant difference in uniformity of burst between the two varieties. The results obtained by matching chill accumulation to tree phenology showed that cherry-producing regions in Australia will experience sufficient chill to support the production of the variety ‘Sweetheart’ with an increase in mean winter temperature of 1 °C. Regions in Western Australia and Queensland will become marginal, or not suitable, for ‘Kordia’.

Item Details

Item Type:Refereed Article
Keywords:bud burst, chill requirement, dormancy, Prunus avium
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Horticultural production
Research Field:Horticultural crop growth and development
Objective Division:Plant Production and Plant Primary Products
Objective Group:Horticultural crops
Objective Field:Stone fruit (excl. avocado)
UTAS Author:Measham, PF (Dr Penny Measham)
UTAS Author:MacNair, N (Mr Nicholas MacNair)
ID Code:90052
Year Published:2014
Web of Science® Times Cited:14
Deposited By:Tasmanian Institute of Agriculture
Deposited On:2014-03-25
Last Modified:2017-11-06

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