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Manure Testing Services

Manure testing is a vital part of managing the nutrients that are applied to your cropland.  Manure add nutrients and also improves Accurate manure testing is vital to managing this nutrient rich resource.the health and structure of your soil. Be confident you’re applying the right amount by getting a manure test before application.

Our laboratories offer flexible manure testing packages and free sampling supplies. Contact our agronomy experts online to find out how you can begin testing today.


Testing Options

Whether you’re looking for fertility content, micronutrient levels or characteristics like pH and dry matter, AgSource has a manure package option for you.


Basic - This package is the industry standard.

  • Includes dry matter, total nitrogen, potassium, phosphorus and sulfur.

Basic Plus - Ideal for analytical purposes.

  • Includes Basic package plus minor nutrients: calcium, magnesium, copper, iron, manganese, sodium and zinc.

Complete - Nitrogen availability is provided.

  • Includes Basic package plus ammonia and nitrate levels.

Deluxe - This analysis provides a more comprehensive determination of nutrient availability.

  • Includes Basic Plus with ammonia and nitrate levels.

Additional Analysis*

  • Ammonia & Nitrate - Measures inorganic nitrogen.
  • pH - Measures acidity or alkalinity of manure. This can be variable, dependent upon the feed and bedding practices associated with the animal production systems. The pH of the manure directly influences the amount of ammonia volatilization.
  • Ash - Measures the inorganic solids.
  • Volatile Solids - Measures the level of organic solids.
  • Electrical Conductivity - Measures the soluble salt content.
  • Water Extractable Phosphorus (WEP) - Determines available phosphorus (soluble phosphorus).

* Packages vary by location. For exact package details for your specific location, please contact your sales representative, email us or call the lab today. 

Sampling Guide

Collection, preparation and shipping can influence sample quality. Poorly handled samples may not result in accurate analysis of the manure's nutrients.

Click here to view Manure Sampling Procedures 

Sampling Reminders

  • Glass containers are not accepted! Contact the lab to order your free sample supplies.
  • Sample Size - Use a one-pint plastic container and fill it 3/4-full.
  • Handling - Cool all samples after collection and freeze the contents before shipping. Ship samples early in the week to ensure timely delivery to the laboratory.
  • Submission Forms - Complete a manure sample submission form, including farm information, sample identification and analysis to be performed. Additional location specific submission forms are on the Location pages.

Results & Reports

Sample turnaround is five to seven working days. Results are available online, via email or standard mail. Choose from Excel, PDF or CSV files or one of the manure report options.


Dry Matter vs Wet-Basis
The AgSource manure report provides test results on an ‘as-received’ basis. This is also called a wet-basis and reflects the way manure is usually spread. The only exception is the Wisconsin report. The minor elements in the Wisconsin manure report are reported on ‘dry matter’ basis.


Technical Bulletin
Before spreading your fields with manure, you should know what nutrients it contains so that you’re adding the right quantity and not creating any potential problems. To learn more about your manure report, read the “Understanding a Manure Report” technical bulletin.