Are you planting enough kernels of corn to get the best returns from your fertilizer? We have concluded that a lot of Iowa farmers aren't. This is our conclusion after 2 years of experiments. We were trying to find out how many stalks of corn you need to obtain the best response from fertilizer- especially when used in large amounts.
Nelson, L. B. and Dumenil, Lloyd
"Plant to Fit Fertility,"
Iowa Farm Science: Vol. 1
, Article 2.
Available at: https://lib.dr.iastate.edu/farmscience/vol1/iss10/2