Maximum Return to Nitrogen (MRTN) Calculator
Fill out the form to see your N recommendation.
This calculator finds the **Most Profitable Rate of Nitrogen (MRTN)** by modeling the relationship between fertilizer cost and the value of increased corn yield. It uses a scientific **quadratic-plateau yield response model** ($Y(N) = a + bN + cN^2$) to predict yield. The model simulates profit for N rates from 0 to 300 lbs/acre to identify the rate that maximizes your net return, not just your yield. The 'Profitable Range' shows application rates that result in a net return within $1.00/acre of the MRTN.