Plant tissue analysis is a tool to diagnose growth problems in crops. Comparing analytical results from “good” and “bad” areas of a field, makes it easier to determine growth problems related to soil fertility. Petiole analysis is used to monitor fertility levels in crops such as potatoes and cotton. Please contact the laboratory today to discuss how to use plant tissue and petiole testing in your operation.

*Call the Laboratories at 800.557.7509 for information on testing packages and discounts based on sample volume.


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