Brussels sprout ring spot control with fungicides
N. C. Welch
A. S. Greathead
D. H. Hall, University of California
T. Little, U.C.
California Agriculture 23(12):17-17. DOI: 10.3733/ca.v023n12p17.
N. C. Welch is Farm Advisors in Santa Cruz and Monterey counties respectively. A. S. Greathead is Farm Advisors in Santa Cruz and Monterey counties respectively. D. H. Hall is Extension Plant Pathologist, University of California, Davis; T. Little is Extension Biometrician, U.C., Riverside.
Benomyl fungicide almost completely controlled ring spot in Brussels sprouts, and was better at the 1 per cent level of significance than all other fungicides included in the trial. Daconil 2787 resulted in 90 per cent control and was significantly lower in number of lesions per leaf at the 1 per cent level than were maneb and maneb plus zinc compounds which gave 72 per cent control. Some degree of control (42 to 50 per cent) was given by captan, copper and thiram.