This web app was developed to provide N, P, and K fertilizer recommendations for agricultural, turf, silvicultural, and home/garden producers based on Clemson Extension recommendations.
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Kirk, Kendall R., Alford, Shannon R., Croft, Jonathan, and Davis, Charles (2022). NPK Recommendation Calculator.
Clemson University Cooperative Extension. Retrieved from https://www.clemson.edu/extension/agronomy/PrecisionAgriculture/calculators/
(c) 2022 Clemson University Cooperative Extension
The authors are grateful for the many individuals that helped to review this tool during its development. Thank you to Dan Anco, Justin Ballew, Matt Burns, Brian Callahan, Jay Crouch, Matt Fischer, Ben Fogle, Rob Last, Fleming McMaster, Chris Ray, Scott Sell, Bryan Smith, Zack Snipes, and James Thomas.
Disclaimer: This calculator is brought to you as a free service by Clemson University Cooperative Extension. The accuracy of the calculator is not guaranteed. User assumes all risks and liabilities from its use.
We are dedicated to making this a valuable tool for you.
If you have suggestions for improvements, please
contact us by email