Trim the central branches and shorten the lower sides. Remove saplings that grow through the canopy in the spring before they harden. Relocating trees to 3- and 4-year-old wood is particularly useful for stimulating new growth and can maintain production in old, crowded trees (Fig. A fungal disease of hazelnut canker that threatens production in Oregon, but can be controlled by pruning, fungicides and resistant cultivars.
The earthworm is the most economically important insect pest in the production of hazelnuts in Oregon. The BMSB feeds on hazelnuts, and this publication helps producers and explorers learn to recognize the damage of BMSB in hazelnuts. Pruning is an important part of hazel tree maintenance, but many people find the task overwhelming. Trim the central trunk and all branches of the hazel tree after planting, shortening each branch to a height of 30 to 36 inches.
Producers, commodity group representatives, pest control advisors, processors, university specialists and other technical experts from the Oregon and Washington hazelnut industry developed this plan, which outlines today's major pests.
