TY - JOUR AU - Paulus, Albert O. AU - Nelson, Jerry AU - Harvey, Otis TI - Controlling powdery mildew in field roses JF - California Agriculture JO - Calif Agr Y1 - 1977/10/01 VL - 31 IS - 10 SP - 17 EP - 17 PB - University of California Agriculture and Nature Resources SN - 0008-0845 UR - http://www.ucanr.edu/sites/calagjournal/archive/?article=ca.v031n10p17 AB - Powdery mildew of rose, caused by the fungus Sphaerotheca pannosa, results in unsightly and frequently malformed leaves and flowers, and may reduce growth. Several new fungicides were evaluated for the control of powdery mildew in southern California commercial rose fields.