Management of dollar spot includes which approach?

• A. Adequate fertilization program; severe damage is prevalent in nitrogen deficient turf
• B. Increasing mowing height drastically
• C. Applying lime to soil
• D. No fertilization necessary

Answer: (A)

The main idea is that dollar spot is strongly influenced by the turf’s nutrition and stress level. Keeping the grass well-fertilized, especially with adequate nitrogen, strengthens plant vigor and reduces susceptibility to dollar spot. When turf is nitrogen deficient, the disease tends to be more severe, so an adequate fertilization program directly addresses the plant’s ability to resist and recover from infection. The other approaches don’t target this key factor as effectively: changing lime affects soil pH but doesn’t directly prevent dollar spot; drastically increasing mowing height isn’t a primary, reliable control and can impact turf quality; not fertilizing ignores the crucial protective role of nutrition.