NPKalc - Fertilizer Calculator vs Corn N Rate Calculator Usage & Stats
NPKalc is an easy to use fertilizer calculator that supports granular and liquid fertilizers with different unit of measures for input. Perfect for the DIY lawn dominator, gardener, landscape professional, golf course superintendents and farmers.
Disclaimer: While we strive to provide accurate information, we do not accept responsibility for any misuse of the NPKalc app. Users are encouraged to use the app responsibly, cross check calculations and consult with experts for specific advice on fertilizer usage.
- Apple App Store
- Free
- Utilities
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This app is designed to assist producers in selecting a Nitrogen (N) rate that improves profitability when N and corn prices fluctuate.
Maximum return to N (MRTN) is the N rate that will be most profitable for a particular N:Corn price ratio. The MRTN rate is the LARGE number expressed in lbs N/acre at the bottom of the screen, and is the total N rate recommended for your field. From this number, you need to subtract the lbs N/acre starter you apply and subtract the lbs N/acre N credits you take. Below the single large number is the range of N rates that result in profitability within $1/acre of the MRTN rate.
- Apple App Store
- Free
- Utilities
Store Rank
- -
NPKalc - Fertilizer Calculator VS. 
Corn N Rate CalculatorJanuary 6, 2025