Hemlock trees saved from woolly adelgid with 'forest fungus factory'

Hemlock woolly adelgid has devastated hemlock forests from Georgia to Maine. Now a scientist has developed a treatment called a "fungal microfactory." In infested trees, a sprayed-on fungus mixture brought down populations of adelgid, while in adjacent control trees, that were not treated, the pest population tripled. This approach, using low-cost sweet whey as a growth medium, seems likely to provide cost-effective, long-term protection for hemlock trees.

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