Soil Sample Testing

Unfortunately Iowa State University no longer does soil testing.  There are some alternative soil testing lab options -- more than what is listed below.  It is recommended that you contact the company and/or view their website for answers to any questions before submitting samples.  
If you submit samples to a lab and get results back that you need help interpreting, please contact us and we will help you understand them.
 
SOIL TESTING FOR HORTICULTURE CROPS (lawns and gardens):

Publications regarding soil testing and fertilizer recommendations:

 For more horticulture publications, visit the Iowa State University Extension and Outreach store.  Search under the "Yard & Garden" tab.
 
SOIL TESTING FOR AGRONOMIC CROPS (fields):
For row crops, small grains, hay, pasture and commercial horticulture crops, clients should use soil testing labs that maintain certification with IDALS.  Labs have to use specified testing procedures and prove reliability/consistency with test results.  IDALS runs blind soil sample tests through these labs on a regular basis.  Go to the IDALS website; click on the correct link under "Soil Testing."

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