TunnelBerries has a YouTube channel! Check out our videos on a range of topics from tunnel venting to trellising systems for brambles. https://www.youtube.com/channel/UCLujqQ1oVtGFL-vhDZsXOtg
High tunnel studies to be conducted at Penn State University for the 2017 growing season include several venting systems to control the tunnel environment. Venting can be automated based on temperature, and motorized components are powered by solar panels. Systems to be tested include: ridge vents (see the image below), roll-up sides, side baffles, roll-up roof and manual venting.
We are just finishing the pruning our primocane-fruiting raspberries at the Michigan research site.Some plants are cut right to the ground so that they fruit only in the fall. We used loppers to prune our raspberries by hand, making sure to cut at ground level to remove all the low buds. Low buds can produce fruit that is hard to find and can become infested with spotted winged drosophila larvae. We are keeping canes on other plants so that they fruit on the 2nd year floricanes in July in addition to the new primocanes in the fall. This "double cropping" system has been increasing total yields and expanding the fresh market season.
Disappointing sight when we removed the row cover from our blackberries on a rotating cross-arm trellis. The plants and trellis are laid down and covered during the winter for protection from cold.
It appears that the protected environment also appealed to a critter (likely a rabbit), who snacked on blackberry bark and girdled many canes. He, she or they preferred the variety Triple Crown over Natchez, Columbia Star or Obsidian. The girdled canes will have to be removed along with a lot of fruit they would have produced this summer.