Received for publication 5 June 1989. Contribution of California Agricultural
Technology Institute, California State Univ., Fresno, and USDA/ARS. California
Agricultural Technology Institute technical paper no. 900605. This study
was supported in art by a grant from Gentry Foods Corporation. Mention of
trade names in this publication does not imply endorsement by California State
Univ. or USDA/ARS. 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.
lForrner Graduate Research Assistant.
2Professor. Dept. of Plant Science and Mechanized Agriculture, California State
Univ., Fresno, CA 93740.
3Research Agronomist