The only way to manage the disease is to destroy all infected trees, which can cause significant economic losses.

Eradication of infected trees has been the most widely used means of control.

The latter is the most noticeable symptom of infected trees.

The fungus has economic significance as it removes any timber value of infected trees.

The infected trees - at least six of the park's 34 Norway maples - will be removed beginning tomorrow, he said.

There is no known chemical treatment for the disease, and both infected trees and those nearby must be destroyed.

If an infected tree is found it must be removed, treated with herbicide and cut down.

Removal and destruction of the infected tree is the first step.

The roots of an infected tree can spread the disease to adjacent elms.

He was at the edge of the clearing that had once been surrounded by infected trees.