1. Department of Horticulture; Oregon State University; Corvallis OR USA
2. Horticultural Crops Research Unit; USDA-ARS; Corvallis OR USA
3. North Willamette Research and Extension Center; Oregon State University; Aurora OR USA
4. Arid-Land Agricultural Research Center; USDA-ARS; Maricopa AZ USA
5. Department of Crop and Soil Sciences; Oregon State University; Corvallis OR USA