Fertlizer Notes

Click HERE for University of Georgia Dryland Corn Recommendations which is 120-80-80 assuming yield 100 bu/acre. Conditions in Georgia are quite different since average annual precipitation is 50 inches so rates need to be adjusted for yield. The following fertlizer rates should be adjusted by Fertilizer-Rate X Bushels-Expected-Yield / 100. We use a little more K20 than recommended.

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.

Most sites say a minimum of 80lbs of K20 per acre so N+K20 will easily exceed 80lbs per acre. Another site says if K20 is needed, starter N + K2O should be limited to no more than 80-100 lbs/acre in the fertilizer band to prevent salt injury. This difference in recommendations may depend on the reference's local soil conditions or because it is placed in-band. I am not putting fertilizer in band (for those who do not know this is putting fertilizer in the planting row next to the seeds rather than broadcasting fertilizer 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. Also my new research shows that Hopi corn need much more space and hence roots reach farther and should be accessing broadcast fertlizer over a larger area. Remember that fertlizer rates should be adjusted for yield/acre which is lower for dryland corn grown with less than 10 inches of precipitation.

The supplier blends the fertilizer, provides a spreader, and has a minimum of 1000lbs per blend.

Fertilizer for 1 Acre Corn / 100 bu. using 1152
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
 
Fertilizer for 1 Acre Corn / 100 bu. using MESZ
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
 
Alfalfa Fertilizer for 1 Acre / 2024
50 lbs Urea 46-0-0N 23 lbs/acre (40 total N for alfalfa)
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
Boron Coating- added by supplier -
N Stablilizer- added by supplier -
 
Corn Fertilizer for 1 Acre (use for 2 acres to adjust for expected yield 2025)
206.5 lbs Urea 46-0-0N 95 lbs/acre (120-150 total N)
195 lbs MESZ 12-40-0-10-1N 24lbs - P205 78lbs - Zn 2lbs
133 lbs KCl MOP 0-0-60K2O 80lbs/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
 
Corn Fertilizer for 2 Acres
(expected yield 50 bu. / acre so will apply to 4 acres 3/26/2025)
413 lbs Urea 46-0-0N 95 lbs/acre (120-150 total N)
390 lbs MESZ 12-40-0-10-1N 24lbs - P205 78lbs - Zn 2lbs
266 lbs KCl MOP 0-0-60K2O 80lbs/acre (up to 150lbs)
Mn Liquid BlendManganese by supplied
Boron Coating- added by supplier -
N Stablilizer- added by supplier -


How To Grow Dryland Hopi Corn

Drought Tolerant Hopi Corn Seeds

Dryland Hopi Corn 2025

Dryland Hopi Corn 2024

Dryland Hopi Corn Experiment

Sorghum Winter Wheat 2023