1. United States Department of Agriculture – Agricultural Research Service, Salinas, CA 93905
2. Department of Microbiology and Plant Pathology, University of California, Riverside, CA 92521
3. University of California Cooperative Extension Imperial County, Holtville, CA 92250
4. University of Arizona, Yuma Center of Excellence for Desert Agriculture, Yuma, AZ 85364
5. University of Arizona, Yuma Agricultural Center, Yuma, AZ 85364