Organic Raspberry Production in Three-Season High Tunnels (E3235)

Organic Raspberry Production in Three-Season High Tunnels (E3235)

This fact sheet provides helpful information including: site selection, tunnel types, planting, pollination and weed, pest and nutrient management.

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Organic Raspberry Production in Three-Season High Tunnels

High tunnels offer several potential advantages for production of raspberries in humid regions such as the Midwest, including:

• Improved plant vigor and yields.

• Extended harvest and marketing season.

• Improved berry quality.

• Reduced damage from several pests and diseases.

For organic producers, these benefits may be particularly valuable since pesticide options are limited. This bulletin integrates knowledge on conventional culture of high tunnel rasperries (see Cornell publication in references) with information collected from a Michigan State University organic high tunnel research project. Initiated in 2009, the project tested cultural methods for organic production of fruits under high tunnels.

The high tunnel research included nine, 26-by-200-foot, multi-bay tunnels from Haygrove Tunnels, Ltd., constructed on a sandy loam soil on the Michigan State University campus in East Lansing, Michigan. Three bays were planted with three different systems: raspberries, sweet cherries mixed with raspberries, and sweet cherries. This publication provides guidance for growers interested in high tunnel production of organic raspberries, though the information is of value to non-organic growers as well. Here are some suggestions based on this and other’s work.

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