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We only accept checks as payment for samples submitted directly to the lab. Samples should be accompanied by a completed sample information form and a check for the amount due payable to MU Soil Testing.
The lab also accepts purchase orders. Contact the lab to discuss this process.
If you have an account set up with the lab, include the firm and outlet number and we will bill you at the end of the month.
Do not send cash with samples.
Soil analysis
Analysis cost
Regular analysis: pHs, NA, OM, Bray I-P, Ca, Mg, K
(includes grinding with recommendations)
$12.50
Bray 1-P or Bray II-P (with regular analysis — $4)
$5
Mehlich III or Olson P
$5
pHw or pHs (with regular analysis — $3.00)
$5
Neutralizable acidity (NA) and pHs
$6
Sodium (with regular analysis — $2)
$5
Zinc (with regular analysis — $4)
$5
Fe, Cu, Mn (with regular analysis — $4.50)
$6
Zinc, Fe, Cu, Mn (with regular analysis — $7.50)
$8.50
Nitrate (with regular analysis — $4)
$5
Ammonium (with regular analysis — $4)
$5
Nitrate and ammonium (with regular analysis — $8)
$9
Sulfate-Sulfur (with regular analysis — $5)
$6
Boron
$5
Organic matter (OM)
$5
Particle size analysis (percentage sand, silt and clay)
$15
Electrical conductivity
$6
Revise crop recommendations
(If requesting to revise recommendations, additional charges will apply)
$2
Walk-in rate
The fee for regular fertility tests varies in counties depending on their shipping and handling costs. Contact your county extension center to get the exact cost when submitting through their office.
Special soil tests
Analysis cost
Total Kjeldhal nitrogen (TKN)
$10
Inorganic — nitrogen (NO3-N and NH4-N)
$9
TKN and inorganic N and organic N
$20
Nitrate-N (NO3-N)
$5
Ammonium-N (NH4-N)
$5
Total phosphorus (TP)
$10
Total potassium (TK)
$10
Sodium absorption ratio (SAR)
$15
Exchangeable sodium percentage (ESP)
$15
Electrical conductivity
$6
Particle size analysis (percent sand, silt, clay) and soil texture
$15
Exchangeable cations and Base saturation percentage