1. Achiever was derived from LM 455 by an additional cycle of phenotypic recurrent selection for Phytophthora root rot, anthracnose, spotted alfalfa aphid and stem nematode in a field selection nursery near Hollister, California and from a Verticillium wilt selection nursery near Moses Lake, Washington. A total of 450 plants were intercrossed in a cage isolation at Merced, California in 1990 with all seed bulked to produce the Sync l generation designated as breeder seed.
2. Achiever is adapted to and intended for use in the western region of the United States where moderately nondormant varieties are grown. It has been tested in the Sacramento and the San Joaquin valleys of Ca