| Dave Ferree re-states what is commonly written about cold damage and pruning in his book Apples. He also cites a reference: Rollins, H. A., Howlett, F. S., and Emmert, F. H. (1962) Gactors affecting apple hardiness and methods of measuring resistance of tissue to low temperature injury. Ohio Agricultural Research and Development Center Research Circular 901, 71. You can also read the chapter on pruning on googlebooks. Lee Reich, PhD Books by Lee Reich: A Northeast Gardener's Year The Pruning Book Weedless Gardening Uncommon Fruits for Every Garden Landscaping with Fruit On Aug 31, 2010, at 2:27 PM, Alan Haigh wrote:
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