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April 2010
Vol. 20, Issue 2
Pages 292-303

Carolyn F. Scagel
U.S. Department of Agriculture
Agricultural Research Service
Horticultural Crops Research Unit
3420 NW Orchard Avenue, Corvallis, OR 97330

Richard P. Regan
Department of Horticulture
North Willamette Research and Extension Center
Oregon State University
Aurora, OR 97002-9543

Rita Hummel
Puyallup Research and Extension Center
Washington State University
7612 Pioneer Way E., Puyallup, WA 98371-4998

Guihong Bi
Truck Crops Branch Experiment Station
Mississippi State University
2024 Experiment Station Road, Crystal Springs, MS 39059