Using Fungicides on Alfalfa for Dairy Production in Wisconsin is a new UW-Extension Publication (A4090)

“In Wisconsin where alfalfa production is generally targeted toward dairy production, Headline® fungicide application will often result in a slight increase in yield, but that increase might not be large enough to offset the cost of applying the product. Typically in a 30-day cutting interval, like that used in dairy production in Wisconsin, foliar diseases cause minimal damage. Coupled with the heightened risk of fungicide resistance development toward these modern fungicides, application of fungicide on alfalfa for dairy production is not recommended unless heavy disease pressure is observed (a rare event).”

A4090 Using Fungicides on Alfalfa for Dairy in WI