Plant in well-drained sites, preferably where brambles have not been grown before. The fungus spreads from plant to plant by swimming spores, so it is important to prevent flooding or puddling around the plants. It is better to prevent this disease by planting in an appropriate site. In questionable sites, plant on raised beds . Discourage water and soil movement from one field to another.
Resistant varieties are available.
See current recommendations for chemical control measures. Ellis, M.A. 1991. 36-37 in Compendium of Raspberry and Blackberry Diseases and Insects. M.A. Ellis, R.H. Converse, R.N. Williams, and B. Williamson, eds. New England Small Fruit Pest Management Guide , 1996-1997.