Anyone who has spent a summer in the San Joaquin Valley hoeing johnson grass, bermudagrass, or nutsedge (nutgrass) out of a young orchard or has labored on a hot summer afternoon trying to pull perennial bindweed out of a young vineyard or a cotton field will be much interested in Roundup (glyphosate). This new herbicide showed promise in earlier studies (California Agriculture, February 1973) and has since proved to be an outstanding product against most annual and perennial weeds.

Also cooperating in the studies were: W. A. Humphrey and H. W. Otto, Orange County; J. R. Breece, San Diego County; L. L. Ede, Riverside County; W. E. Bendixen, Santa Barbara County; V. H. Schweers and W. L. Peacock, Tulare County; F. H. Swanson, Fresno County; E. E. Stevenson, Stanislaus County; H. S. Agamalian, Monterey County; W. D. Hamilton, Alameda County; D. M. Holmberg, Yolo County; D. R. Donaldson, Napa County; L. L. Buschmann, Sutter County; George Butts, Murietta Farms, Mendota; the Monsanto Chemical Company, Amchem Chemical Company, Dow Chemical Company, and Ansul Chemical Company; and the staffs of the South Coast Field Station, Westside Field Station, and San Joaquin Valley Agricultural Research and Extension Center.