Fusarium head blight or scab
chances of infection. How to prevent Fusarium head blight or scab Remove or destroy crop residues Choose resistant cultivars Use clean propagation materials [...] primarily infects the older, lower leaves. The spores are dispersed upwards to the ears by splashing rain drops or wind. On the infected ears, the typical [...] materials (seed can be treated effectively with hot water) Use clean substrate in greenhouse crops Disinfect tools, machinery and irrigation water in greenhouses