First off today, fusarium head blight symptoms and when to spray. Kelly Turkington, research scientist with Agriculture Canada in Lacombe, says observable symptoms don’t appear until the late heading stage, when it is too late to apply protective fungicide. Therefore, a decision to apply a fungicide must be made prior to this. Turkington explains.
Interview with Kelly Turkington (3:09 minutes) (1.44 Mb)
Source : Alberta Ag and Forestry