WineEast
Additional questions to be answered include: 1) What effect does diffusion of light have on insects such as Japanese beetles? There is anecdotal evidence that Japanese beetles don't like light diffusion and therefore don't cause as much damage in a tunnel as on uncov- ered vines, especially young plants; 2) Is it possible that lower humidity under the tunnel will reduce disease potential? Again, there is some evidence that fewer sprays are needed because of the control of rainfall on the vines inside the tunnel.
3) When grapes are harvested earlier, will vines acclimate to cold temperatures sooner and therefore get through cold winters with less or no winter injury?
Keith Cramer recommends two types of high tunnels for vineyards in the east. The first is a "starter" kit for getting a grower into a tunnel program. The kit consists of a "Super Silo" high tunnel measuring 25 feet x 200 feet (or 5,000 square feet), with 5-foot sidewalls and covered by luminance plastic. The cost for the kit is $8,995.
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The second tunnel, the minimum size that the Cramers carry, is a 4-Series
multi-bay tunnel that covers half an acre. This tunnel system has three bays, each measuring 24 feet x 300 feet. It costs $21,000 (96 cents per square foot), not including the labor to set it up. Cramer noted that the kind of tunnel used east of the Rockies is more robust than in Cali- fornia because of the difference in wind speed. Wind in California rarely exceeds 35 mph, while in the East wind speeds up to 60 mph are not uncommon. For more information, contact Haygrove Inc. by phone at (717) 492-4955 or visit haygrove.com. On the West Coast, contact dominic.criscenti@haygrove.com. WE
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