J. R. BaggettDepartment of Horticulture, Oregon State University, Corvallis, OR 97331
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Contributor Notes
Received for publication May 29, 1982. Published as Technical Paper No. 6394, Oregon Agricultural Experiment Station.
The cost of publishing this paper was defrayed in part by the payment of page charges. Under postal regulations, this paper therefore must be hereby marked advertisement solely to indicate this fact.