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Category: Blog
Texas Plant and Soil Lab has been testing soil since 1938, using a superior form of extraction method that mimics the way plant’s roots take up nutrients from the soil. Along the way, prominent TP&S Lab owner K. Chandler set the stage for our plant nutrition monitoring program, “Ask the Plant”. And since the late […]
Mon, 09 Mar 2015 18:43:55 +0000

Category: Blog, Lab News
Another PDF installment of Lab News from Texas Plant and Soil Lab! TPSL LAB NEWS FEBRUARY 2015
Thu, 05 Mar 2015 01:51:16 +0000

Category: Uncategorized, Farm Ranch and Dairy Magazine, Potato, Soil
TP&S Lab’s own Larry Zibilske, Ph.D., and Noel Garcia, C.C.A. penned the lead cover-story in the current edition of Western Farm, Ranch & Dairy Magazine. To order a physical copy you can contact them here: where you can also view all of their periodicals online: including our featured copy here:
Tue, 17 Feb 2015 21:40:34 +0000

Category: Blog, soil lab, soil testing
Texas Plant and Soil Lab has been testing soil for farmers and growers since 1938. And while technology advances and some tools become fancier and quicker, the process of testing soil remains largely the same. And while our nutritional standards are updated and refined each year based off last seasons success and ongoing environmental changes, […]
Thu, 12 Feb 2015 20:42:05 +0000

Water Testing

Order Water Testing Online
You can now order Water Testing online. Ordering your water test online streamlines the process and provides online order status tracking.

Water Testing Online Category Page
For the entire Water Testing Category Page with How-To information, Descriptions and Pricing, Click Here.

Water Test Direct Links
To Click Through directly to the Water Test you wish to order, choose from the list below:

Other Useful Water Testing Documents

Water Analysis Guide Sheet
Heavy Metals Protocols Matrix
Example Water Test Results
Taking a Water Sample for Testing
Dealing with Salty Water Paper

To Order TP&S Lab Water Testing offline,
download the TP&S Lab Water Testing Multi-Sample Form
download the TP&S Lab Water Testing Single-Sample Form
download the TP&S Lab Testing Catalog & Price List

Why Water Test?

As we enter the 21st century, we encounter difficulty in obtaining adequate irrigation water supply. Many water sources have an increasing salt content. Effluent water containing salts must be used. In other areas, the water levels of the underground aquifers are rapidly decreasing and governments are severely restricting the amount of water which may be withdrawn for irrigation. In still other areas, the quality of the underground aquifers is very poor resulting in the application of large amounts of salts. Use of less than ideal water quality requires a carefully designed fertility and water management program to optimize the use of water and minimize damage to soil and plants from excess salts in the water.

Most quality standards were developed many years ago when there was less knowledge and products available to help minimize the harmful effects of salts.  Today with proper testing to identify the salt cations and anions, better water management is possible.  Identifying the cations and anions is needed to properly manage water along with a soil analysis that identifies the 4 major salt cations. Couple water knowledge with proper testing of soils for soluble and extractable calcium along with the humus content, treatments can be made to minimize salt stress and optimize salt leaching.  In the short run we can get more benefit from even good quality water with proper soil, plant and water test information.  Balanced plant nutrition improves water use efficiency.  Benefits from an inch of water can be tripled with the proper balance of plant food.

Water delivery systems such as Drip, micro-jet, LEPA, center pivot, etc., have all made big improvements in recent years.  In most fields water can be the biggest limiting yield factor.  However, just applying water does not necessarily recoup the investment in irrigation equipment; balanced plant nutrients and all BMP are needed.

Getting the most benefit from water depends mainly upon adequate and balanced plant nutrition. Even without irrigation the most profitable yields depend upon adequate nutrition so each inch of water makes the optimum yield. Ask the Plant® Petiole (Stem) or Leaf Testing is the only way to determine if the plant has adequate nutrition at any and all stages of growth. It is then very profitable to inject into the water system the right plant food and other aids in the right amount at the right time to get the highest return on the investment in water and plant food. Many new products are now on the market that can make farming more profitable when used properly.

Water samples from irrigation systems should be taken from the active system to be sure the sample is free of stagnant water and is representative of the water actually being applied to the turf.

Clean glass or plastic water bottles (20 oz) make good sample containers.

If sampling a lake or pond, samples should be taken at several locations and at several depths if possible.

These should be combined and a sample of the composite should be sent for analysis.

TP&S Lab also tests well water and drinking water for safety, health and peace of mind. We also test for the full spectrum of heavy metals, including Lead and Arsenic.

TP&S Lab also tests water for City Municipalities and Water Companies, for independent auditing and verification.

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

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Ask the Plant
TP&S Lab
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Visit our sister site for
nutritional papers & method.
TP&S Lab is proud to be a member of the Texas Ag Industries Association.
Texas Wine & Grape Growers Association
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.
TP&S Lab is proud to be a member of the American Society for
Enology and Viticulture.
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