1. Postdoctoral Research Associate, Washington State Univ., Pullman, WA 99164.
2. Extension Irrigation Specialist/Associate Professor, Washington State Univ., 24106 N. Bunn Rd., Prosser, WA 99350 (corresponding author).
3. Research Associate, AgWeatherNet Program, Washington State Univ., 24106 N. Bunn Rd., Prosser, WA 99350,