Fertlizer Notes

Corn Fertlizer

225 lbs Urea 46-0-0N 103.5 lbs/acre (120-150 total N)
150 lbs 1152 11-52-0N 16.5 lbs/acre + P205 78 lbs/acre (up to 150lbs)
167 lbs KCl MOP 0-0-60K2O 100lbs/acre (up to 150lbs)
52 lbs FeSO4 31% Iron MonohydrateIron 16 lbs/acre
30 lbs Zinc Sulfate 35% ZincZinc 10 lbs/acre
50 lbs MgO 45% Magnesium OxideMagnesium 22.5 lbs/acre (*50-100)
18 lbs MnSO4 28%Manganese 5 lbs/acre


208 lbs Urea 46-0-0N 110 lbs/acre (120-150 total N)
195 lbs MESZ 12-40-0-10-1N 24lbs - P205 78lbs - Zn 2lbs
167 lbs KCl MOP 0-0-60K2O 100lbs/acre (up to 150lbs)
52 lbs FeSO4 31% Iron MonohydrateIron 16 lbs/acre
22 lbs Zinc Sulfate 35% ZincZinc 8 lbs/acre
50 lbs MgO 45% Magnesium OxideMagnesium 22.5 lbs/acre (*50-100)
18 lbs MnSO4 28%Manganese 5 lbs/acre


For 2.5 acres

600 lbs Urea 46-0-0N 110 lbs/acre (120-150 total N)
385 lbs MESZ 12-40-0-10-1N 24lbs - P205 78lbs - Zn 2lbs
420 lbs KCl MOP 0-0-60K2O 100lbs/acre (up to 150lbs)
40 lbs FeSO4 30% Iron MonohydrateIron 4.8 out of 16 lbs/acre
50 lbs Zinc Sulfate 35% ZincZinc 7 lbs/acre
125 lbs MgO 45% Magnesium OxideMagnesium 22.5 lbs/acre (*50-100)450lbs 13% Dolomite LimeMagnesium 23.4 lbs/acre (*50-100)
45 lbs MnSO4 28%Manganese 5 lbs/acre


Dryland Corn Recommendations 120-80-80

For N the following resource Comparison of Nitrogen Use Efficiency Indices for Corn Fertilized with Commercial Urea & Poultry Litter - Alabama Cooperative Extension System is useful. Phosphate recommendations are 60-165lbs per acre. Potash recommendations are 100-200lbs per acre. * Mangnesium should be 50-100lbs per acre and is less than recommended because Magnesium absorption is higher at high pH and the local fertilizer rep. says local soil Mg is sufficient.

Note to Self: One site states a min 80lbs K...

If K is needed, starter N+K2 O should be limited to no more than 80-100 lbs/acre in the fertilizer band to prevent salt injury. Note I am not putting fertilizer in band (for those who do not know this is putting fertilizer in the row where planting rather than broadcast which is spread evenly). Broadcasting fertilizer is less efficient especially if row spacing is wide (like corn at 4ft apart) but I don't have equipment for in-band placement.