01-04-2017, 04:07 PM
The ROD fungus actually takes years to kill the tree; it's just that it doesn't show obvious symptoms until it has completely cut off the tree's water supply, whereupon the leaves start to turn brown and it's irreversible. Giving it a phosphorus boost might make it show more vigor and counteract the less-obvious signs of a tree that's slowing down because it's partially blocked, but it's not going to stop the progression.