This article is focused on managing the problems milder winters and higher spring temperatures are likely to bring due to climate change. There are a number of locations around the world where winter chilling is marginal for pome fruit production. In the southern hemisphere marginal winter chilling occurs for pome fruit in southern Africa, and the southern highlands of south eastern Brazil as well as the mild winter parts of Australia such as Stanthorpe and Western Australia.
In the Northern hemisphere Israel, and lower altitude Northern Africa such as the Nile Delta area of Egypt are examples of apple and pear production in marginal locations. There is a lot of good published scientific information available on managing the effects mild winters on pome fruit dormancy behaviour.
Read the full article here: Managing Climate Change on Orchards