Albert O. Paulas is Plant Pathologist, Cooperative Extension, University of California, Riverside; Curt Engle is Research and Development Representative, Mobay Corporation, La Quinta, California; Faustino Munoz is Farm Advisor, San Diego County; Jerry Nelson is Staff Research Associate, Cooperative Extension, University of California, Riverside; Harold W. Otto is Farm Advisor, Orange County; Aziz Baameur is Farm Advisor, Riverside County;