By Dario J. Chavez, Jeff Cook and Tom G. Beckman Rootstocks are important for fruit production as they provide required protection for soil pests and pathogens. The most predominant peach rootstocks in the Southeastern United States are Guardian (Alabama, Georgia and South Carolina) and Flordaguard (Florida). Guardian (BY520-9) was released by the U.S. Department of Agriculture Agricultural Research Service (USDA …