NPK Analysis | Nitrogen, Phosphorus, Potassium | | Complete Plant Analysis | Nitrogen, Phosphorus, Potassium, Calcium, Magnesium, Sulfur, Zinc, Iron, Manganese, Copper, Boron, Sodium | | Complete Petiole Analysis | Nitrate-nitrogen, Phosphate-phosphorus, Phosphorus, Potassium, Calcium, Magnesium, Sulfur, Zinc, Iron, Manganese, Copper, Boron, Sodium | | NO3-N & PO4-P Analysis | Nitrate-nitrogen, Phosphate-phosphorus | | Individual Tests | Extractable Nitrate-nitrogen, Phosphate-phosphorus, potassium, or Chloride | | Total Phosphorus, Potassium, Calcium, Magnesium, Sulfur, Sodium, Zinc, Iron, Manganese, or Copper | Nitrogen, total | |