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Making Crops Greater for Growers Around the World Since 1938.
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TP&S Lab Blog
the latest from our news feed
Category: Blog
Mirtha Valdez has been appointed Office Manager! As such, she is responsible for the day-to-day business operations. But when the samples come in and we’re short-handed, she pitches right in!
Mon, 21 Jul 2014 21:31:49 +0000

Category: Blog
Please join us in congratulating Chemist Frank Rivera, who has been named Assistant Manager of Laboratory Services. In addition to being a production chemist, Frank has shown great initiative in streamlining procedures, identifying production bottlenecks and assisting Vice President of Research, Dr. Larry Zibilske and Manager of Laboratory Services, Richard David Ramirez, in developing new […]
Fri, 11 Jul 2014 16:12:24 +0000

Category: Blog, Maryland, soil testing
Testing This Week at TP&S Lab: Soil Samples from Maryland TP&S Lab tests soil from all over the world and this week we are pleased to be serving clients in Maryland with soil samples for corn crops. TP&S Lab has been developing proprietary nutritional guidelines for corn crops for many decades now, and clients that […]
Wed, 09 Jul 2014 19:59:09 +0000

Category: Blog, Oregon, water testing
Testing This Week: Water Samples from Oregon for Alfalfa TP&S Lab tests water samples from all over the world and makes recommendations for crops related to your watering needs. This week we’re testing water samples sent in from Oregon, used for irrigation of Alfalfa crops. TP&S Lab has proprietary nutritional guidelines for crops culled from […]
Tue, 08 Jul 2014 03:49:00 +0000

Soil Testing

TP&S Lab has been performing soil test and analyzing crop specific soil data since 1938. This page serves as a launch point for all your soil testing needs and questions.

Order Soil Testing Online

TP&S Lab makes soil testing orderable online in two different ways:

(1) Direct Purchase Price with no sample bag and no return mailer box. This testing is sold at the cheapest price with no materials or retail mark-up.

(2) Return Mailer Kit, sent to your address with order form, printed instructions, sample bag and return shipping box. Retail price includes printed materials, handling and shipping.

Soil Test Direct Pricing Category Page
For directions and a complete list of Direct Purchase Price soil testing, please visit this page.

Soil Test Return Mailer Kit Category Page
For a complete list of return mailer kits, please visit this page.

Soil Test by Packages
Soil test packages grouped together in the most popular bundles at a discounted price.
TPSL® SOIL TEST + LOI + SOLVITA®
CALIFORNIA TPSL® SOIL TEST
TPSL® SOIL TEST + LOI
TPSL® SOIL TEST

Stand alone Soil Tests direct pricing.
TPSL® SUBSOIL TEST
MEHLICH III SOIL TEST FULL SCREENING
MEHLICH III SOIL TEST

Add-On Soil Tests direct pricing.
These Add-On test can be purchased in corresponding quantities to ordered tests.
SOLVITA® SOIL HEALTH & ACTIVITY TEST
ADD-ON TESTING OF CHLORIDES TO SOIL TEST
ADD-ON TESTING OF TEXTURE (BOUYOUCOS HYDROMETER METHOD) TO SOIL TEST
ADD-ON TESTING OF LOI (LOSS ON IGNITION) TOTAL ORGANIC MATTER TO SOIL TEST
ADD-ON TESTING OF SULFATE TO SOIL TEST
ADD-ON TESTING OF CEC – CATION EXCHANGE CAPACITY + % BASE SATURATION – MEHLICH III

Order Soil Testing offline
To download the printable forms for traditional ordering, please choose:

  • Soil Test Form for Single-Sample Soil Test
  • Soil Test Form for Multi-Sample Soil Test
  • Soil Test Form for Lawn & Garden Soil Testing
  • View All Laboratory Testing on one web page
  • View Current Testing Catalog and Fee Schedule PDF

  • International Soil Testing

  • International Soil Permit and Instructions
  • Learn More about our Soil Testing Method

  • Why should I use a soil test?
  • Why our method is superior
  • Crop Specific soil testing

  • The "How To's" of Soil Testing

  • See an example TP&S Lab Soil Test Report
  • How to Take a Soil Sample for a TP&S Lab Soil Test
  • Interpretation guide to TP&S Lab Soil Test Reports
  • TP&S Lab Soil Testing Price List PDF
  • Why should I have my soil tested?

    A pre-plant soil test will tell you what fertilizers you need to apply to get your plants off to a good start by providing them with proper soil fertility at planting.

    A post-harvest soil test tells you what nutrients your crop removed so you can start preparing your soil for the next crop.

    Different plants remove different nutrients at different rates throughout the growing season. Worse yet, some soils readily leach out nutrients while other soils rapidly tie up nutrients into compounds that are not readily available to the plant. By the end of the season, there can be little available nutrients left.

    Proper soil nutritional balance can reduce water usage by 40 to 60 percent and dramatically reduce fertilizer requirements by
    applying only what the crop needs.

    YOU CAN’T GUESS about fertilizer application and expect to attain the best economic yields and plant quality.

    Why are TPSL®'s tests and recommendations superior?

    TPSL® uses the Carbon Dioxide (CO2) Extraction Method because it mimics the way plants naturally take up nutrients in every soil type.

    This method was developed in 1845 by Charles G.B. Daubeny of Oxford, England and was one of the first extraction methods. It was not until the 20th Century that analytical technologies advanced to allow the method to be further developed by the universities of Arizona and Florida, and others. TPSL® has continued to build upon and develop those earlier works for more than 40 years.

    Utilizing the Carbon Dioxide (CO2) Extraction Method reveals the amounts of soil nutrients that are immediately available to the plant, as well as those nutrients that are “in reserve” or slowly-available.

    Other labs tell you only the total content, much of which may be unavailable to the plant. This explains why more recent testing methods may show certain nutrients as adequate or high, yet the plants show deficiencies in those same nutrients – and why you may see the same test results, year after year.

    With our tests you get detailed recommendations for correcting problems and building healthy, live soils using the Albrecht System of fertility balancing – specifically for your soil, your plants and your cultivation practice – whether Conventional, Sustainable or Organic.

    See Explanation of Soil Organic Matter here.

    In addition to the Carbon Dioxide (CO2) Extraction Method, TP&S Lab also offers the standard methods to conduct nutrient analysis, including DTPA, Mehlich III, Ammonium Acetate (Modified Morgan) and others.

    For more details and more information on why the TP&S Lab method of Soil Test is superior to assembly-line automated lab testing, please see our page, Why Our Method?

    Please contact us today at 956-383-0739 and speak with us
    about your needs.

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    nutritional papers & method.
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    TP&S Lab is proud to be a member of the Texas Wine and Grape Growers Association.
    US Composting Council
    TP&S Lab is proud to be an approved Lab by the U.S. Composting Council for Seal of Testing Assurance.
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    Enology and Viticulture.
    American Society for Enology and Viticulture
    *ASEV and the ASEV Logo are licensed trademarks of the American Society for Enology and Viticulture.
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