Plant Tissue
Insect or disease issues should be sent to the Plant Disease Diagnostics Clinic.
Analyses Offered
Routine Tissue: $25 Submission Form | Routine Sampling Instructions
Includes tissue N, P, K, Ca, Mg, S, Zn, Mn, B, Cu, and Fe. Also Includes 1 routine soil analysis if sample provided. Optional soil tests available for extra are: Calcium + Magnesium: $3 | Boron: $3 | Zinc: $3 | Manganese: $3 | Sulfur-Sulfate: $3
Total N only: $10 Submission Form
Potato petiole nitrate: $10 Submission Form | Potato Petiole Sampling Instructions
Corn stalk nitrate: $10 Submission Form | Corn Stalk Nitrate Sampling Instructions.
Sampling
Correct sample collection is critical for plant analysis as plant nutrient composition varies with age, the portion of the plant sampled, and many other factors. Mistakes or carelessness in selecting, collecting, handling, preparing, or shipping plant tissue for analysis can result in unreliable data, which may lead to incorrect interpretations and recommendations. Standards, against which the sample is evaluated, have been selected to represent the plant part and time of sampling that best define the relationship between nutrient composition and plant growth. Deviation from the prescribed protocol severely limits this interpretations capability. It is, therefore, critical to follow a standard sampling procedure.
Analysis and Reporting
The report will show the concentration of N, P, K, Ca, Mg, S, Zn, Mn, B, Cu, and Fe in the plant sample. If a soil was submitted with the plant sample, soil analyses for pH, organic matter, P, K, and any special soil test results will also be reported. For those plant materials where calibration data are not available, these analytical results will be provided without interpretation. Plant analysis results are interpreted by sufficiency range.