Saturday, May 28, 2011
The ideal diameter to pinch is small enough so you can remove it easily with your hands and not use a pruner. Wider diameter cuts that need a pruners create larger wounds. These large wounds do not heal as quickly and are therefore more prone to infection. The middle photo above shows a cane before tipping and the bottom photo shows the same cane after it has been tipped.
The primary disease that occurs as a result of the larger pruning wounds is Cane Blight. Cane Blight of Blackberry, is caused by Leptosphaeria coniothyrium. For more information on this disease see Dr. Phil Brannens publication at http://www.caes.uga.edu/publications/pubDetail.cfm?pk_id=7380.
Posted by Gina_fernandez@ncsu.edu at 8:12 AM