Authors
J. B. Contina
Driscoll’s Inc., Red Bluff
D. R. Kroese
USDA Forest Service, Pacific Northwest Research Station, Corvallis
T. W. Walters
Walters Ag Research, Anacortes
J. E. Weiland
USDA Agricultural Research Service, Horticultural Crops Research Unit, Corvallis
I. A. Zasada
USDA Agricultural Research Service, Horticultural Crops Research Unit, Corvallis