March 11, 2026

S4 E15 Do Spray Nozzles and Volume Influence Dollar Spot?

1 hour 8 minutes

In this video, I review the research article “Strategies for Increasing Ferrous Sulfate Efficacy Against Dollar Spot of Creeping Bentgrass.” We examine how ferrous sulfate (FeSO₄) can suppress dollar spot, how application techniques affect performance, and whether combining it with chlorothalonil improves disease control.

The study found that nozzle selection and application strategy influence performance, and that ferrous sulfate can reduce the amount of chlorothalonil needed and extend its effectiveness against dollar spot.

If you manage creeping bentgrass greens or fairways, this research provides valuable insights into dollar spot management, iron applications, and fungicide optimization.

#turfgrass #dollarspot #golfcoursemanagement #turfgrassscience #bentgrass #fungicides #soilscience

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By Travis Shaddox

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