This article provides an updated Maximum Return to Nitrogen Rate recommendation table for corn planted after soybean. Table 1 and 2 were previously published in the 2021 CORN newsletter https://agcrops.osu.edu/newsletter/corn-newsletter/2021-39/implications-high-n-fertilizer-prices-corn-n-fertilizer. There are a couple of changes to note with these revised tables. First, due to continued concerns about nitrogen source availability, urea was added to the source list for Table 1 to provide per unit N prices. In addition, Table 2 nitrogen rate quick lookup table is updated to reflect new data in the Corn Nitrogen Rate Calculator tool. The database for soybean-corn and corn-corn rotations now includes trials through 2021.
Table 1. Price per Ton of Anhydrous and 28% UAN at Various Price per Pound of Nitrogen Fertilizer Costs (Updated 5/23/2022).
|
|
Price of Nitrogen Fertilizer ($/lb) |
|||||
|
N Source |
$0.65 |
$0.75 |
$0.85 |
$0.95 |
$1.05 |
$1.15 |
|
82-0-0 |
$1066 |
$1230 |
$1394 |
$1558 |
$1722 |
$1886 |
|
28-0-0 |
$364 |
$420 |
$476 |
$532 |
$588 |
$644 |
|
45-0-0 |
$585 |
$675 |
$765 |
$855 |
$945 |
$1035 |
Table 2. Ohio MRTN recommended Nitrogen Rates (lbs nitrogen/acre) for Corn following Soybean based on the Price of Corn Grain and Nitrogen Fertilizer (Updated 5/23/2022).
|
|
Price of Nitrogen Fertilizer ($/lb) |
|||||
|
Price/Bushel Corn |
$0.65 |
$0.75 |
$0.85 |
$0.95 |
$1.05 |
$1.15 |
|
$5.50 |
173 |
165 |
158 |
151 |
145 |
139 |
|
$6.00 |
178 |
170 |
163 |
156 |
150 |
144 |
|
$6.50 |
182 |
175 |
168 |
161 |
155 |
149 |
|
$7.00 |
185 |
178 |
172 |
165 |
159 |
154 |
|
$7.50 |
189 |
182 |
176 |
169 |
163 |
158 |
If you have corn planted after corn or specific price scenarios for your farm, we encourage you to visit Corn Nitrogen Rate Calculator (CNRC) web tool. You can find CRNC at http://cnrc.agron.iastate.edu/. If you need a brief introduction to CNRC, see https://agcrops.osu.edu/newsletter/corn-newsletter/2022-05/using-corn-nitrogen-rate-calculator.