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AgSource Plant Diagnostic Analysis

Laboratory plant tissue testing provides a snapshot of a plant’s nutrient status at the time of sample collection. This can be helpful if you’re wanting to understand and track the nutrient status of your crop throughout the growing season, or are trying to identify a problem.

Looking to fine-tune your fertilizer program throughout the growing season? We recommend using our summary plant tissue report which allows you to track and view past sample results of your crop. Gain a deeper understanding of the relationship between plants and your fertility program with a tissue test, or testing program period.

  • Complete Leaf Analysis – Results include: Total Nitrogen, Phosphorus, Potassium, Zinc, Calcium, Magnesium, Sulfur, Manganese, Boron, Iron, Aluminum and Sodium.
  • Complete Petiole Analysis – Results include: Total Nitrogen, Phosphorus,  Phosphate-Phosphorus, Potassium, Zinc, Calcium, Magnesium, Sulfur, Manganese, Boron, Iron, Aluminum and Sodium.
  • Stalk Nitrate Testing – This end-of-season stalk test was developed to evaluate how well nitrogen fertilizer was utilized by the corn plant and allows the producer to distinguish between over-fertilization and fertilizing to maximize profits.

*You must bring in or mail back your soil sample to receive results.