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ProCrop |
Fertility Requirements for Corn Silage
Soil Test Phosphorus, ppm
P Soil Test Level (lb/A) |
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| Yield goal | Soil N plus | VL | L | M | H |
| fertilizer | 0-6 | 7-14 | 15-22 | 23-30-34 | |
| Corn Grain | N required | (lb/A-2') | |||
| (ton/A) | lb P2O5/acre | ||||
| 10 | 65 | 50 | 35 | 25 | 10 0 |
| 14 | 95 | 70 | 50 | 30 | 10 0 |
| 18 | 120 | 90 | 65 | 40 | 15 0 |
| 22 | 150 | 110 | 80 | 50 | 20 0 |
K Soil Test Level (lb/A) |
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| Yield goal | Soil N plus | VL | L | M | H |
| fertilizer | 0-80 | 81-160 | 161-240 | 241-320 | |
| Corn Grain | N required | (lb/A-2') | |||
| (ton/A) | lb K2O/acre | ||||
| 10 | 65 | 80 | 55 | 35 | 10 |
| 14 | 95 | 110 | 80 | 50 | 15 |
| 18 | 120 | 145 | 105 | 60 | 20 |
| 22 | 150 | 175 | 125 | 75 | 25 |
Nitrogen recommendation = 25 YG-STN
Bray-I P recommendation = 45.0-2.5 STP
Olsen P recommendation = 45.00-3.45 STP
Potassium recommendation = 80.00-0.53 STK
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