Find the right people for your acres

Soil testing

International Ag Labs, Inc.

Fairmont, Minnesota

Fairmont soil lab and consulting firm building nutrient programs for farmers, gardeners and consultants; NAPT participant accepting mailed samples.

Agronomic soil fertilitySoil consulting & fertility programs

Mail-in service

Details & contact

Agronomic soil fertility · Soil consulting & fertility programs · Custom fertilizer blends

Mail-in samples · consulting on any crop nationwide

Public-source listing · Checked 2026-10-01. Confirm availability directly.

Business website / source

Own this business? Claim or correct listing

Soil testing

K-State Research and Extension Soil Testing Lab

Manhattan, Kansas

University lab in Manhattan testing soil, ag lime, plant tissue, forage, grain and irrigation water for Kansas farms and homeowners.

Soil fertility testsAgricultural lime analysis

Mail-in service

Details & contact

Soil fertility tests · Agricultural lime analysis · Plant, forage and grain analysis · Leaf tissue testing · Irrigation and nutrient water analysis

Mail-in with a UPS label or drop-off in Manhattan · after-hours drop box

Public-source listing · Checked 2026-09-30. Confirm availability directly.

Business website / source

Soil testing

KSI Laboratories

Shelbyville, Illinois

Shelbyville soil lab founded in 1980 pairing analysis with grid sampling for precision fertilizer programs; field offices across central Illinois.

Agronomic soil fertilityGPS grid soil sampling

Mail-in service

Details & contact

Agronomic soil fertility · GPS grid soil sampling · Precision-ag fertility support

Mail-in or field-sampled · central Illinois offices

Public-source listing · Checked 2026-10-01. Confirm availability directly.

Business website / source

Soil testing

Logan Labs, LLC

Lakeview, Ohio

Lakeview lab testing soils from backyard gardens to cash-crop fields, with full cation and micronutrient panels; mail-in from anywhere in the US.

Agronomic soil fertilityLawn & garden soil test

Mail-in service

Details & contact

Agronomic soil fertility · Lawn & garden soil test · Soil health tests (Solvita, bulk density, texture)

Mail-in samples · US customers, permits for international

Public-source listing · Checked 2026-10-01. Confirm availability directly.

Business website / source

Soil testing

Makalii Metrics

Honolulu, Hawaii

Honolulu soil analysis provider offering fertility and specialty crop testing for Hawaii growers.

Soil fertility analysisSpecialty crop soil panels

Hawaii

Details & contact

Soil fertility analysis · Specialty crop soil panels · Restoration soil analysis

Hawaii farms and gardens; arrange sample submission with the lab

Public-source listing · Checked 2026-10-02. Confirm availability directly.

Business website / source

Crop consulting

Mid-Michigan Agronomy

DeWitt, Michigan

DeWitt research and consulting firm scouting about 30,000 acres, mostly potatoes, with its own nematode and plant diagnostic lab.

Potato crop scoutingSoil and petiole sampling

7 states listed

Details & contact

Potato crop scouting · Soil and petiole sampling · Nematode and plant diagnostic lab · Grid sampling · Contract field research

Michigan base; consulting reaches OH, WI, IL, IN, SC and NC

Public-source listing · Checked 2026-09-30. Confirm availability directly.

Business website / source

Soil testing

Midwest Laboratories, Inc.

Omaha, Nebraska

Omaha lab campus offering soil fertility, micronutrient and Haney soil health packages, plus plant tissue, feed and water testing.

Soil fertility packagesSoil nitrogen and micronutrient tests

Mail-in service

Details & contact

Soil fertility packages · Soil nitrogen and micronutrient tests · Haney soil health test · Plant tissue analysis · Feed, water and environmental testing

Mail-in samples · weekday drop-off at the Omaha campus

Public-source listing · Checked 2026-09-30. Confirm availability directly.

Business website / source

Soil testing

Minnesota Valley Testing Laboratories (MVTL) - Nevada

Nevada, Iowa

Central Iowa sample-receiving site of MVTL in Nevada that takes soil, manure and plant tissue samples for the company's ag testing.

Soil sample receivingManure sample receiving

Mail-in service

Details & contact

Soil sample receiving · Manure sample receiving · Plant tissue sample receiving

Drop-off for soil, manure and tissue samples · not a full lab

Public-source listing · Checked 2026-09-30. Confirm availability directly.

Business website / source

Soil testing

Minnesota Valley Testing Laboratories, Inc. (MVTL)

New Ulm, Minnesota

Long-running New Ulm commercial lab offering soil, manure, tissue, water and nematode testing to farmers, co-ops, agronomists and homeowners.

Agronomic soil fertilitySoil health package

Mail-in service

Details & contact

Agronomic soil fertility · Soil health package · Manure analysis · Plant tissue · Agricultural water & SCN screening

Mail-in samples · courier routes in MN, IA, western WI, eastern SD

Public-source listing · Checked 2026-10-01. Confirm availability directly.

Business website / source

Soil testing

Motzz Laboratory

Phoenix, Arizona

Phoenix analytical laboratory offering agricultural soil, plant tissue, irrigation water, compost and fertilizer testing.

Soil analysisPlant tissue and petiole analysis

Arizona

Details & contact

Soil analysis · Plant tissue and petiole analysis · Irrigation water analysis · Compost and fertilizer analysis

Phoenix laboratory · confirm sample submission arrangements

Public-source listing · Checked 2026-10-02. Confirm availability directly.

Business website / source

Soil testing

MSU Extension Soil Testing

East Lansing, Michigan

Michigan's university soil-test program: MSU Extension mailers and commercial bags analyzed by A&L Great Lakes, with MSU-generated recommendations.

Home lawn & garden soil test mailerCommercial field soil test bags

Mail-in service

Details & contact

Home lawn & garden soil test mailer · Commercial field soil test bags · pH, CEC, organic matter, P-K-Ca-Mg with MSU recommendations

Postage-paid mailer or county Extension bags · emailed results

Public-source listing · Checked 2026-10-01. Confirm availability directly.

Business website / source

Soil testing

NCDA&CS Agronomic Services Soil Testing Laboratory

Raleigh, North Carolina

Raleigh state laboratory analyzing soil fertility and pH to guide crop nutrient and lime decisions.

Soil fertility testingSoil pH analysis

Mail-in service

Details & contact

Soil fertility testing · Soil pH analysis · Crop nutrient recommendations

North Carolina grower samples by mail or drop-off

Public-source listing · Checked 2026-10-02. Confirm availability directly.

Business website / source

Good people. The right capabilities.

65 providers to explore

International Ag Labs, Inc.

K-State Research and Extension Soil Testing Lab

KSI Laboratories

Logan Labs, LLC

Makalii Metrics

Mid-Michigan Agronomy

Midwest Laboratories, Inc.

Minnesota Valley Testing Laboratories (MVTL) - Nevada

Minnesota Valley Testing Laboratories, Inc. (MVTL)

Motzz Laboratory

MSU Extension Soil Testing

NCDA&CS Agronomic Services Soil Testing Laboratory