1. Irrigated Agricultural Research
and Extension Center, Washington State University, Prosser, Washington 99350, United States
2. Agricultural Research Service, U.S. Department of Agriculture, Washington State University,
24106 North Bunn Road, Prosser, Washington 99350, United States
3. Department of Plant, Soil, and Entomological
Sciences, University of Idaho, MS 2339,
875 Perimeter Drive, Moscow, Idaho 83844, United States
4. Subarctic Agricultural Research
Unit, Agricultural Research Service, U.S. Department of Agriculture, P.O. Box 757200, Fairbanks, Alaska 99775,
United States