TY - JOUR AU - Paulus, A. O. AU - Nelson, J. AU - Shibuya, F. AU - Miller, M. AU - Maire, R. G. TI - Controlling rose powdery mildew in field and nursery JF - California Agriculture JO - Calif Agr Y1 - 1971/05/01 VL - 25 IS - 5 SP - 10 EP - 11 PB - University of California Agriculture and Nature Resources SN - 0008-0845 UR - http://www.ucanr.edu/sites/calagjournal/archive/?article=ca.v025n05p10 AB - Powdery mildew of rose, caused by the fungus, Sphaerotheca pannosa, results in unsightly leaves and flowers and may cause reduced growth. Recently, several new systemic and non-systemic fungicides have become available. These studies were initiated to evaluate these new materials for powdery mildew control in southern California.