Nitrogen
On all soils, 90 kg N/ha is recommended.
Phosphorus and Potassium
Test the soil to determine phosphorus and potassium requirements.
Table X, Phosphorus and Potassium Requirements for Sweet Corn on Mineral Soils |
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| Legend: HR = High Response MR = Medium Response LR = Low Response RR = Rare Response NR = No Response | |||||
| Phosphorus | Potassium | ||||
| Sodium Bicarbonate Phosphorus Soil Test (ppm) | Rating | Phosphate (P205) Required kg/ha | Ammonium Acetate Potassium Soil Test (ppm) | Rating | Potash (K2O) Required (kg/ha) |
| 0-3 | HR | 110 | 0-15 | HR | 170 |
| 4-5 | HR | 100 | 16-30 | HR | 160 |
| 6-7 | HR | 90 | 31-45 | HR | 140 |
| 8-9 | HR | 70 | 46-60 | HR | 110 |
| 10-12 | HR | 50 | 61-80 | HR | 80 |
| 13-15 | MR | 20 | 81-100 | MR | 50 |
| 16-20 | MR | 20 | 101-120 | MR | 30 |
| 21-25 | LR | 20 | 121-150 | LR | 0 |
| 26-30 | LR | 20 | 151-180 | RR | 0 |
| 31-40 | RR | 0 | 181-210 | RR | 0 |
| 41-50 | RR | 0 | 211-250 | RR | 0 |
| 51-60 | RR | 0 | >250 | NR | 0 |
| 61-80 | NR | 0 | |||
| 80+ | NR | 0 | |||