Blackberry management and yields under multi-bay high tunnels at Michigan State University: We are protecting some tender blackberries by covering them with row cover during the winter. This winter will be a real test as temperatures have dipped below 0 degrees F regularly during the last few weeks. Last winter rabbits got under the row cover and girdled most of the Natchez floricanes so this winter we installed fencing to prevent a repeat. The 2017 yield data is: Triple Crown was the most productive in 2017 (equivalent of 21,790 lb/acre) followed by Obsidian (6,700 lb), Columbia Star (4,340 lb) and the girdled Natchez (1,640 lb/acre).
K. Hanson: Tunnel Berries Outreach Coordinator