Dutch Elm Disease
The most well-known plant disease in the Eastern United States and Canada is the Dutch elm disease. It has laid waste to Main Street, U. S. A., and the countryside alike. Great groves of elm along our new superhighways stand stripped and bleached in the sun (frontispiece and Fig. 25-1 A).
KeywordsBark Beetle Healthy Tree Donor Tree Disease Cycle Root Graft
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