Dr. William MacDonald on Oak Wilt Disease
Автор: pittsburghparks
Загружено: 2011-02-22
Просмотров: 21926
From February 17, 2011 symposium "Preserving Pittsburgh's Trees: Action and Recovery." Dr. William MacDonald of West Virginia University explains why oak wilt is one of the most virulent tree diseases but can be effectively managed with a proper plan.
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