Excellent control of powdery mildew of cantaloupe was obtained by using the recommended rate of 3/4 pound Karathane wettable powder (25%) per acre applied as a spray, in Palo Verde Valley tests, Riverside County, in 1961.

Valley Sprayer and Duster Service, Inc., Glendale, Arizona, assisted by applying the materials; John Norton Farms, Inc., cooperated by supplying land and melon plants for spraying; California Chemical Company supplied the V.G fungicide; and Rohm and Haas Company supplied the Karathane fungicide.