Agronomic Services — Waste/Compost Analysis
Kristin A. Hicks, Ph.D., Section Chief
Don Edralin, Ph.D. Agronomist
Waste analysis helps growers make responsible decisions about the use of farm, municipal and industrial wastes and by-products as fertilizer materials for crop production. Predictions of first-crop nutrient availability are provided according to application method (e.g., surface broadcasting, soil incorporation, injection or irrigation). Laboratory analyses for total Kjeldahl nitrogen, total phosphorus, copper and zinc are certified by the state's Division of Water Quality for compliance with the environmental regulations specified in N.C. Senate Bill 1217.
Standard analysis includes: nitrogen †, phosphorus, potassium, calcium, magnesium, sulfur, iron, zinc, manganese, copper, boron, sodium and aluminum.
† For liquid waste samples, nitrogen is measured as Total Kjeldahl Nitrogen (TKN) rather than Total Nitrogen.
Electrical conductivity, dry matter %, carbon (for C:N ratio) and/or pH are automatically included in the Standard Analysis for many sample types. All four are available upon request for any waste sample at no added cost. Please contact the lab if you would like information about the tests automatically included for your particular material.
Standard fee per sample:
*Samples qualify for the in-state rate if they originated in North Carolina. Research samples require an annual research agreement prior to submission. All research samples receive a 10% analysis recheck for quality control at no added cost.
Extra tests available at $2 each:
Extra tests available at $10 each:
Extra tests available at $20 each:
| Waste Analysis Reports
and Explanatory Information
|Waste Sample Analysis Methodology||NCDA&CS Waste & Compost Analysis Methods|
|Sampling for Waste Analysis||Waste Sample Submission Form (Grower) updated!
Waste Sample Submission Form (Researchers)
NCDA Sample ID Spreadsheet
Waste Sampling Quick Guide
Dairy Waste Sampling Guidelines
Sampling for Waste Analysis
Composting Makes $ense
|Sample Containers||Sample containers are not provided by NCDA&CS. For liquid waste, submit 12–16 oz of a representative waste sample in a plastic (not glass) bottle. Used beverage containers with the labels removed work great! Be sure to rinse the container prior to sampe collection; do not use soap. For solid waste, submit 1–2 quarts of a representative sample in a sealed plastic bag.
|Waste Sample Summary Information: 2003–2012|
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