Research Agronomist, Assistant Professor of Soil Science.
Professor of Plant Science.
Received for publication 30 Mar. 1987. Univ. of Idaho Agricultural Experiment Station Paper no. 87712. We wish to greatfully acknowledge the cooperation of Asgrow Seed Co. for its provision of funding and seed quality evaluation for this research. 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.