Downy mildew of lettuce controlled by systemic fungicide
Albert O. Paulus, University of California
Jerry Nelson, University of California
California Agriculture 31(12):9-9. DOI: 10.3733/ca.v031n12p9.
Albert O, Paulus is Plant Pathologist Cooperative Extension, University of California, Riverside. Jerry Nelson is Staff Research Associate Cooperative Extension, University of California, Riverside. Marvin Snyder is Farm Advisor and Judy Gafney is Extension Assistant, Santa Barbara County. ;
Abstract Not Available – First paragraph follows:
Downy mildew of lettuce, caused by the fungus Bremia lactucae, can cause considerable damage especially to early spring and late fall crops in coastal areas. It is favored by cool, moist weather and may occasionally cause economic damage in the Imperial Valley during the winter lettuce season. Trials were initiated in the summer and fall of 1976 to compare new systemic fungicides from Ciba Geigy with commonly used materials.