Soil, Water and Forage Testing
Cotton Nitrogen Fertilizer Calculator
    Enter requested data in tan boxes  
  Analyses for all data boxes can be preformed by the Texas A&M University Soil, Water and Forage Testing Laboratory  
  Yield goal (bales/acre)   Adjusted N recommendation  lbs N/acre  
  Soil Test Nitrate-N (ppm)    
  0-6" sampling depth    
Profile Nitrate Data
Enter data for only one depth below
  6-12" sampling depth    
  6-18" sampling depth    
  6-24" sampling depth    
  Irrigation Nitrate-N credits  
Leave blank for dryland cotton systems
  ppm Nitrate-N     
  Planned inches/acre to be applied    
  Manure N application  
Leave blank if no applications are planned
  % N in manure    
  Application rate (dry tons)    
    Calculated  at 40% annual availability    
  Effluent N application  
Leave blank if no applications are planned
  % N in effluent    
  Application rate (acre inches)    
Calculated  at 50% annual availability
Additional information can be located at:      soiltesting.tamu.edu,        soilcrop.tamu.edu,        cotton.tamu.edu,        varietytesting.tamu.edu