While doing a web search I came across the final Magnum opus of Dr. Wayne Wilcox, my grape pathological colleague from Cornell University, who is now very happily (almost!) retired. This document was one of the sources used when composing the efficacy tables for fungicides in Publication 360. Some of the products mentioned in this document are not registered in Canada; others are labeled under a different name so you have to compare the active ingredients. It’s a long document so set aside some time on a rainy day and take a gander. It can be found at this website.