Root injury during planting into contaminated soil can also result in infection. It has entered New Mexico in contaminated soil in nursery containers. High nitrogen fertilizers are not recommended. Water frequently to moderate wilt symptoms, but don't overwater and cause root rots. Dead branches should be removed and burned.
Fungicides provide little benefit.
Use of resistant trees is the best means of avoiding the problem. Some resistant trees to consider include redbud, honey locust, and locust.