How does the Illinois calculator determine my potassium needs?
Overview:
The Illinois calculator can be used to help create potassium recommendations for your fertility strategies.
Requirements:
- Customers must be enrolled in Encirca® Premium Fertility service to use the Illinois calculator.
Answer:
The Illinois calculator utilizes the following equations:
Nutrient |
Crop |
Build/Maintenance |
Potassium |
Corn |
If CEC < 12 and (STK * 2) < 260 then K Rec = (((260 - (STK * 2) * 4) / 4) + (0.24 * Yield); if (STK * 2) >= 260 and (STK * 2) <= 360 then K Rec = (0.24 * Yield) If CEC >= 12 and (STK * 2) < 300 then K Rec = (((300 - (STK * 2) * 4) / 4) + (0.24 * Yield); if (STK * 2) >= 300 and (STK * 2) <= 400 then K Rec = (0.24 * Yield) |
Potassium |
Soybeans |
If CEC < 12 and (STK * 2) < 260 then K Rec = (((260 - (STK * 2) * 4) / 4) + (1.17 * Yield); if (STK * 2) >= 260 and (STK * 2) <= 360 then K Rec = (1.17 * Yield) If CEC >= 12 and (STK * 2) < 300 then K Rec = (((300 - (STK * 2) * 4) / 4) + (1.17 * Yield); if (STK * 2) >= 300 and (STK * 2) <= 400 then K Rec = (1.17 * Yield) |