Agronomy Library

Fungicide Corn Applications & Diseases

Titan Pro
July 31, 2019

Delayed planting coupled with a wet spring most often means it is a good year to make a fungicide application on corn. Wet conditions favor the development of foliar diseases within the canopy and many fields are delayed developmentally due to later planting. When diseases start showing up during early grain fill, it increases the risk of reduced yield. When leaf diseases threaten the corn crop, the yield return for fungicide application is an excellent ROI.

Corn Fungicide Application Considerations

  • Fungicide application to corn is a good investment, even in years with low corn prices.
  • Evaluate risk on a field-by-field basis
  • Fungicide application timing is very important
  • Presence or absence of foliar diseases should drive the fungicide decision
  • Best timing for fungicides on corn begins when the last branch of the corn tassel is visible
  • Don’t forget to add your Drift & Deposition for maximum plant coverage i.e. AccuDrop™

Current High Risk Diseases

  • Gray Leaf Spot V15-R4
  • Northern Corn Leaf Blight V15-R4
  • Tar Spot V8-VT