To view the article, click on the attachment link.

NMPRO, Nursery Management & Production
March 2007

Guihong Bi
Assistant Professor
Mississippi State University
Truck Crops Experiment Station
2024 Experiment Station Road
PO Box  231, Crystal Springs, MS 39059

Carolyn Scagel
Plant Physiologist
Horticultural Crops Research Laboratory
3420 NW Orchard St.
Corvallis, OR 97330