IANA Resources
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Quick reference resources for your farming operation. Click on the tabs to filter by subject.
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- Cover Crops
- Nutrient Management
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Nitrogen Management Calculators
Make smarter fertilizer decisions with real numbers. Calculate what you're losing through tile drainage and determine exactly how much product you need—so you're not over-buying or under-applying.
Corn Nitrogen Rate Calculator
Calculate economic return to N application with different nitrogen and corn prices and to find profitable N rates directly from recent N rate research data.
How Much Fertilizer Do I Need?
Calculate how much fertilizer you need based on your target application rate. Find the N-P-K numbers on your fertilizer bag (example: 20-10-10) and enter them below along with your target nutrient rate.
What Am I Losing Into My Tile Water?
If you use tile water to evaluate your nitrogen loss, you can actually find your loss per acre by using this formula:
Concentration × Tile Flow ÷ Drainage Area = lbs. of N per acre being lost