MAP: Black walnut tree populations

September 12, 2010 | 7:07 p.m. CDT
The fungal infection thousand cankers disease reached its eastern most state in July, hitting Tennessee. Although the disease has not been detected in Missouri yet, the state has a large native eastern black walnut tree population. If the disease were to infect Missouri trees, it could cost the state more than $850 million over a 20-year period, according to Missouri Department of Agriculture estimates.
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