Present address: Dept. of Agronomy and Horticulture, New Mexico State Univ., Las Cruces, NM 88003-3530.
Received for publication 27 May 1986. We acknowledge support provided by the Wisconsin Kraut Packers Association and the College of Agricultural and Life Sciences. 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.