A field and laboratory manual emphasizing the most practical methods for rapid identification.

With 44 years of distinguished post-doctoral experience in many areas of his field, Dr. Rupert B. Streets, Sr., is best known for his research on the control of Texas root rot in field crops, tree crops, and ornamentals; diseases of dates, citrus, and guar; brown rot of stone fruits and roses; his selection of flax resistance to wilt; the serology of citrus viruses; and the use of antibiotics for the control of crown gall and fire blight. Joining the University of Arizona faculty in 1924, Dr. Streets served for eight years as head of the department of Plant Pathology and taught courses at every level, instructing students on the identification and control of plant diseases.