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Certified Soil Testing Labs

Certified Soil Testing Labs

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Certified Soil Testing Labs

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Wisconsin Certified Soil & Manure Testing Laboratories

A Wisconsin nutrient management plan must be based on soil tests conducted at the soil testing laboratory certified by the Department of Agriculture, Trade and Consumer Protection.  This requirement ensures soil test results and recommendations will be generated through analytical procedures approved by the University of Wisconsin with consistent results.  Laboratories must perform with a certain level of success, to remain certified.  

The following soil testing laboratories are Wisconsin DATCP certified.

UW Soil & Forage Lab

2611 Yellowstone Dr

Marshfield, WI 54449


MAP participant

A & L Great Lakes Laboratories, Inc.

3505 Conestoga Dr.

Fort Wayne, IN 46808


MAP participant

AgSource Laboratories

106 N. Cecil Street

Bonduel, WI 54107


MAP participant

Dairyland Laboratories

217 E. Main Street

Arcadia, WI 54612


MAP participant

Rock River Laboratory

710 Commerce Drive

PO Box 169

Watertown, WI 53094


MAP participant

Minnesota Valley Testing Laboratories, Inc (MVTL)

1126 N Front St    PO Box 249

New Ulm, MN 56073

(800) 782-3557

MAP participant

Midwest Laboratories Inc.

13611 B Street

Omaha, NE 68144


MAP participant

Dairyland Laboratories

709 W Meadow St

Stratford, WI 54484



Estimates of first-year available nutrient credits for manure shall be established in accordance with one of the following methods:

1.Standard “book values” contained in UW Pub. A2809 and Snap Plus nutrient management software from developed by the UW Madison, Soil Science Department and available free of charge.          

2.Or, manure analysis conducted at a laboratory that participates in the Manure Analysis Proficiency program and interpreted according to the table below.  Wisconsin DATCP certified soil testing laboratories participating in MAP are listed above.  You can learn more about the MAP program and find other participating laboratories at .

For Technical Assistance         Wisconsin Department of Agriculture, Trade and Consumer Protection

Sue Porter        (608)224-4605                
Stephanie Schneider(715)832-6547 x6019      
Mark Jenks        (608)224-4507              
Ryan Erisman        (608)224-4604              

For nutrient management plan (NMP) information go to

SNAP-Plus software and training opportunities are available at



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