Enter Soil Test Results             Enter Yield Goal, Treatments and Crop    
    * Ammonium and Nitrate based on potassium chloride extraction                  
    Ammonium - N, 0-12 and 12-24 inch of soil (ppm)         Realistic silage yield (tons/acre)
 
    or 0-12 inch   12-24 inch     or    
    Ammonium - N, 0-24 inch of soil (ppm)           Realistic grain yield (bu/acre)
 
    *0-12" & 12-24" soil samples are combined before sending to lab 0-24 inch                
    Nitrate - N 0-12 and 12-24 inch of soil (ppm)         Small grain residue incorporated into soil (tons/acre)
 
    or 0-12 inch   12-24 inch            
    Nitrate N, 0-24 inch of soil (ppm)           If alfalfa was incorporated into the soil the previous fall    
    *0-12" & 12-24" soil samples are combined before sending to lab 0-24 inch           Enter the approximate amount of alfalfa added to the soil.
 
    Phosphorous (P) (ppm)           Select light, medium or heavy incorporation.    
    *Based on NaHCO3 extraction method or Olsen Method
            Select zero if alfalfa was not inorporated before corn planting.    
     Potassium (K) (ppm) NaHCO3/Olsen Method                
    *Based on NaHCO3 extraction method or Olsen Method              Was manure applied previous to corn?
 
                  *Required field    
    Optional Economic Adjustment             Select if corn is grown for silage or grain
 
                  *Required field    
    Price of corn (price/bu)            
                  Nutrient Recommendations     
    Price of nitrogen (price N/lb)                
    *When the price of corn grain to the price of fertilizer N falls below             Nitrogen application rate (lb N/acre)  
     a ratio of 9 results in nitrogen recommendations being reduced by 15%                  
                  Phosphorous application rate (lb P205/acre)  
         
    Potassium application rate (lb K20/acre)