Links
There is a wealth of information on tree crops at the Fruit & Nut Research & Information Center.
You can find excellent information about new training systems, rootstocks, and other information on cherries:
Lynn Long, Oregon State University, Wasco County Extension (publications and videos):
Home Page
Pruning and Training
Rootstocks
Greg Lang, Michigan State University:
Research:
Sweet Cherry Research
PowerPoint presentations:
Producing First-Class Sweet Cherries: Integrating New Technologies, Germplasm, and Physiology into Innovative Orchard Management StrategiesSweet Cherry "Fruiting Wall" Training Systems
Matt Whiting, Oregon State University