'Ol Zingaro was being sued last I heard for advocating treatments that have no basis in factual scientific research.
What I do know is SOD does not effect younger OAK trees and he based some of his 'proof' on the young trees that had withstood inoculation by SOD followed by inoculation with his proprietary treatment.
Keep in mind I am a layman and dont really know what is the best way to go but I do advocate preventitive health care methods for my clients trees such as improving the growing conditions, reducing host plants etc.
Using the official treatment means continued treatment over an extended period of time (reducing the efficacy of the chemical, see preceding article) and many of my clients have very large properties with hundreds of trees. So short of cutting down acres of trees I just advocate prudent removals, deep root inoculations. Seems like most of the actual trees I have removed because of SOD have been Tan Oaks
Frans