Each year, WinField United tests 240 hybrids across seed brands to determine response-to-fungicide (RTF) scores. Unlike most seed guides, which base disease ratings on visual observations, Answer Plot data is used to calculate the potential yield response of a fungicide application by hybrid. The trials are replicated more than 200 times to account for different growing conditions and geographies.
Data from WinField United Answer Plots:
Fungicide Cost: $30.00
Corn Price: $3.50
Low – 8.5 bu/ac $0.25
Mod – 16 bu/ac $26.00
High – 21 bu/ac $43.50
This shows that your variety matters when it comes to ROI on a fungicide application. Below is RTF scores for popular varieties from Co-Alliance:
Don’t see your hybrid above? Here’s a list of Dekalb, Mycogen, and NK scores.