High-Pressure Washer Removes Red Scale for Citrus Fruits
Red scale infested oranges before and after high-pressure washing
What has ANR done?A team of Agricultural Experiment Station researchers from the University of California, Riverside (G. P. Walker, Entomology; J. G. Morse, Entomology; and M. L. Arpaia, Botany and Plant Sciences) collaborated with the FMC Corp. in the mid-1990s to develop a device that removes California red scale from fruit after harvest, thus greatly reducing the need for pesticide use in the field. The device, referred to as a high-pressure scale washer, relies simply on a high-pressure water spray without any pesticides. Scale are removed by the physical impact of the sprays.
High-Pressure Scale Washers Used in Majority of California PackinghousesThis method of pest control has been very successful, and today high-pressure scale washers are used in the great majority of citrus packinghouses in California. This method has aided the use of biological control strategies by reducing pesticide use that might otherwise interfere with the natural enemies that control citrus pests.
Supporting Unit:UCR Entomology Department
Dr. Gregory Walker
Boyden Lab 211
University of California
Riverside, CA 92521
(909) 787-5808 (Voice)
(909) 787-3086 (Fax)