Soil Testing and Plant Diagnostic Services


Tests and fees

Submitting soil samples

  • Samples should be accompanied by a soil sample information form. Sample boxes and soil information forms can be obtained from your local Extension centers or by contacting the lab.
  • We encourage you to submit samples to an Extension center. The rates for soil analysis are for samples submitted directly to our lab.
  • Sample submitted directly to the lab should be accompanied by the sample information form and a check for the amount due payable to MU Soil Testing, unless you have an account with us. If you have an account with us fill in the firm and outlet number and we will bill you at the end of the month.
  • Extension centers usually charge slightly higher rates to cover postage. Firms or individuals can set up an account with the lab in order to do business directly with the lab.

Submitting plant samples

  • Plant samples should be submitted with a plant analysis information form. These can be obtained from an Extension center, the website, or by contacting the lab.

Turnaround time

  • Soil sample analysis: 1.5 working days
  • Plant, compost, greenhouse media, water and manure analysis: 4 to 5 working days.

Minimum sample size

  • For soil; one cup
  • For compost, manure, greenhouse media and water; one quart

Electronic data access

  • Soil test reports can be emailed or accessed using our web site with a password assigned by the lab.

Volume discounts

  • We offer discounts for large numbers of samples. For more information, please contact the Soil and Plant Testing Laboratory.

Method of payment

  • 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.
  • Do not send cash with samples. 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.
Soil analysis Analysis cost
Regular analysis: pHs, NA, OM, Bray I-P, Ca, Mg, K (includes grinding with recommendations) $10
Bray 1-P or Bray II-P (with regular analysis — $4) $5
Mehlich III or Olson P $5
pHw or pHs(with regular analysis — $2.50) $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
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 — $4) $5
Boron $5
Organic matter $5
Particle size analysis (percentage sand, silt and clay) $12
Electrical conductivity $6
  • 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) $12
Exchangeable sodium percentage (ESP) $12
Electrical conductivity $6
Particle size analysis(percent sand, silt, clay)/soil texture $12
Base saturation (percent) $12
Cation exchange capacity (addition method) $10
Cation exchange capacity (NH4OAc-distillation method) $18
Total carbon (TC) by combustion $9
Total nitrogen (TN) by combustion $9
Total sulfur (TS) by combustion $9
Total CN/NS/CS (any two of the above combination) $16
Total carbon, nitrogen and sulfur by combustion (TCNS) $24
Potentially mineralizable N $16

 

Compost tests Analysis cost
Complete compost analysis package (regular) includes: Total N, P, K, Ca, Mg, Zn, Fe, Cu, Mn; C/N, pH, EC and moisture percentage $40
Total nutrients: N, P, K, Ca, Mg and moisture percentage $22
Total nutrients and micros: N, P, K, Fe, Cu, Zn, Mn and moisture percentage $28
pH (saturation paste method) $6
EC (electrical conductivity — saturation paste method) $6
Nitrate-N and ammonium-N $10
Total Kjeldhal nitrogen $10
Total carbon $9
Carbon: nitrogen ratio (C/N ratio) $16
Individual element analysis: P, K, Ca, Mg or Na $6
Sulfate-S $6.50
Boron $5
Chloride $6.50
Moisture percentage $4
  • Volume
    Samples should be approximately one quart.

 

Environmental soil analysis Sample cost One-time setup fee
Arsenic (As) $20 $25
Cadmium (Cd) $20 $25
Cobalt (Co) $20 $25
Chromium (Cr) $20 $25
Lead (Pb) $20 $25
Molybdenum (Mo) $20 $25
Nickel (Ni) $20 $25
Heavy metals package (Cd, Co, Mo, Ni, Pb) $30 $25
Metals package (As, Cd, Co, Cr, Mo, Ni, Pb, Se) $50 $25
Trace element package (As, Cr, Se) $25 $25
Urban metals package (Cu, Cd, Pb) $25 $25
  • Setup fee only charged once, whether for a single sample or several. The one-time setup fee is $25.

 

Greenhouse media tests Analysis cost
Regular greenhouse media analysis (GHM) package: pH, P, K, Ca, Mg and total salts $20
Regular GHM analysis package plus micro nutrients: pH, P, K, Ca, Mg, Zn, Fe, Cu and Mn $26
Complete GHM analysis: pH, P, K, Ca, Mg, Zn, Fe, Cu, Mn, Nitrate-N, Ammonium-N and Total Salts $35
Micro-elements (Fe, Cu Zn and Mn) only $12
Nitrate-N and ammonium-N $9
Individual element analysis $6
Sulfate-S $6.50
Boron $5
Chloride $6.50
Moisture percentage $4
  • Sample volume should be approximately one quart.

 

Manure tests Analysis cost
Complete manure analysis package: total N, P, K, NH4-N, pH, EC and moisture percentage $40
Total nutrients:N, P, K and moisture percentage $22
Total nutrients plus Ammonium-N:N, P, K, NH4-N and moisture percentage $28
Total nutrients and micros: N, P, K, Fe, Cu, Zn, Mn and moisture percentage $28
pH (saturation paste method) $6
EC (electrical conductivity — saturation paste method) $6
Total Kjeldhal nitrogen $10
Ammonium-N $6
Individual element analysis: P, K, Ca, Mg or Na $6
Moisture percentage $4
  • Volume
    Samples should be one quart for dry manure and one pint for liquid manure.

 

Plant tissue tests Analysis cost
Regular analysis: nitrogen, phosphorus, potassium, calcium and magnesium + drying and grinding $17
Regular analysis plus micro nutrients:copper, iron, manganese and zinc + drying and grinding $23

 
Complete nutrient analysis package:regular+ micros

+ boron, molybdenum and sulfur + drying and grinding
$30
Micro nutrients only: copper, iron, manganese and zinc $12
Individual analyses (per nutrient)
Nitrogen (TKN) $10
Phosphorus (P) $5
Potassium (K) $5
Calcium (Ca) or Magnesium (Mg) $5
Iron (Fe) or Copper (Cu) or Zinc (Zn) or Manganese (Mn) Write the element/s to be analyzed $5
Boron $5
Chloride $6.50
Nitrate-N $8
Total Nitrogen (N) by Combustion $9
Total Carbon (C) by Combustion $9
Total Sulfur (S) by Combustion $9
Total C and N by Combustion $16
Total N, C, S by Combustion $24
Corn Stalk Nitrate-N $12
Sample grinding $2
  • A grinding fee of $2 per sample for individual analysis will be added for all plant samples that need to be dried and ground

 

Water tests Analysis cost
Domestic hardness, pH, nitrate-N, sulfate, chloride, sodium, carbonate, bicarbonate, iron, manganese, copper, electrical conductivity, total dissolved solids $35
Irrigation
pH, nitrate-N, sulfate, chloride, sodium, phosphorus, potassium, electrical conductivity, carbonate, bicarbonate, total dissolved solids and SAR
$35
Livestock
pH, nitrate-N, sulfate, calcium, magnesium, sodium, chloride, copper, iron, and manganese, electrical conductivity, total dissolved solids
$40
Poultry
Hardness, pH, nitrate-N, sulfate, phosphate, chloride, calcium, magnesium, sodium, potassium, carbonate, bicarbonate, iron, manganese, copper, electrical conductivity, and total dissolved solids
$45
Complete
Hardness, pH, nitrate-N, sulfate, phosphate, chloride, calcium, magnesium, sodium, SAR, potassium, carbonate, bicarbonate, alkalinity, iron, copper, manganese, zinc, aluminum, silica, electrical conductivity, total dissolved solids, w/o interpretation
$60
  • Volume
    Submit 500 ml or 16 fluid oz. of sample for analyses.

Updated 7/18/17