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Spraying to begin across Pennsylvania forests to combat spongy mothsThe start of aerial spraying of ... note the state’s oak stands are especially vulnerable to infestations. A tree begins to suffer significantly when 30% or more of its leaf surface is lost ...
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PA Game Commission announces plans to spray more than 123,000 acres of state game lands in effort to control spongy moth outbreakSpraying is planned on 46 different state game lands – 123,276 acres in all – and will begin as soon as leaf-out occurs and ... from mast-producing mixed-oak stands to stands dominated by ...
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