Water management . Stocking levels and fertilization . In Seed Orchards Return to top Wounds . Because wounds serve as means of entry for the fungus, this action should reduce disease occurrence. Tree shakers .
Tree shakers can wound the tree at the point of attachment and throughout the crown.
Further growth of these cankers may kill the trees. Clip the cones . See figure 15. Cone harvesting produces wounds during the critical infection period and can result in multiple infections throughout the crown. Avoid mower damage to the tree stem and anchor roots.