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  • UT Soil & Nutrient Management
  • UT Fertilizer Recommendations
    • Agronomic Crops
    • Pasture / Hay / Silage Crop
    • Commercial Vegetable / Root Crop Production
    • Commercial Fruit and Nut Production
    • Home Garden Fruit and Nuts
    • Home Vegetable Garden and Lawn
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  • Soil Fertility
    • Overview of Tennessee Soils
    • Nutrient Management
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    • Soil Health
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Fertilizers

Nitrogen sources

  • Anhydrous ammonia (82 percent)
  • Ammonium sulfate (21 percent)
  • Ammonium nitrate (33-34 percent)
  • Urea (46 percent)
  • Urea ammonium nitrate (28-32 percent)

Phosphorus sources

  • Ammonium polyphosphate (34-37 percent)
  • Di-ammonium phosphate (46 percent)
  • Mono-ammonium phosphate (48-61 percent)
  • Triple superphosphate (45 percent)

Potassium sources

  • Muriate of potash or Potassium chloride (60 percent)
  • Potassium magnesium sulfate (21-22 percent)
  • Potassium nitrate (44-46 percent)
  • Potassium sulfate (48-53 percent)

Sulfur sources

  • Ammonium sulfate (24 percent)
  • Potassium sulfate (18 percent)
  • Magnesium sulfate (13 percent)
  • Gypsum (18 percent)
  • Zinc sulfate (18 percent)
  • Thiosulfate (10-26 percent)
  • Elemental sulfur

Zinc sources

  • Zinc sulfate (22-36 percent)
  • Zinc chelates (6-14 percent)
  • Zinc lignosulfonate (10 percent)

Boron sources

  • Borax (11 percent)
  • Boric acid (17 percent)
  • Sodium pentaborate (18 percent)

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