Quality Gypsum Matters

The Quality of Gypsum Matters

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Not all Calcium Sulfate is the same. There is Dihydrate (Ca2SO4 +2H2O) and Anhydrite (Ca2SO4) Calcium Sulfate. The addition of the 2 naturally occurring water molecules in Calcium Sulfate Dihydrate make this type of Calcium Sulfate more water soluble, and therefore, it will work that much faster when applied. Dihydrate also aids in the transference of nutrients to the plant, providing the valuable nutrients Calcium and Sulfur. You could use Anhydrite in agriculture, but its benefits will be significantly slower to see. Anhydrite is better suited for wallboard and cement applications.

Mineral quality – All gypsum is formed with other minerals determined by the geographic area in which it resides. There are deposits naturally formed with minerals deleterious to agriculture such as salt, mercury, anthrax, and cadmium. Requesting an SDS (Safety Data Sheet) from your supplier will identify these elements. The highest quality gypsum is formed with other minerals that are also beneficial to agriculture, such as dolomite, lime or calcium carbonate. 

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What is in the rest of the mineral matters.

What else could you find in the natural deposit of Calcium Sulfate Dihydrate?

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It is recommended that Calcium Sulfate Dihydrate for agriculture has a minimum of 80% purity level - the amount of actual Calcium Sulfate Dihydrate contained in the mineral matter. If your soil, and water if irrigating, has high concentrations of salts, aluminum, magnesium, or heavy metals it is recommended that you use 90% or higher for remediation. The higher the purity level, however, the better suited it is for agricultural use. Keep in mind, that Dihydrate, with its two molecules of water will never be 100%.
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EcoGEM’s Soil Enhancer is offered at a minimum of 80% or minimum of 90% purity levels! It is also certified for Organic use by OMRI for organic food and agriculture!!!!

Natural or mined gypsum – There is synthetic gypsum available in the market that is produced from byproducts of coal fired power plants. This product cannot be labeled as organic and may have other trace materials imbedded that can be harmful to soil and plants. The higher quality gypsum is always natural.

Always ask your supplier to see a specification sheet before buying Calcium Sulfate Dihydrate to ensure you are getting quality product.

In summary, the highest quality gypsum for agriculture is natural, a dihydrate, has beneficial trace minerals, and purity levels over 80%. EcoGEM has the highest quality product in North America. Please find in the Products Tab the EcoGEM Soil Enhancer product specification sheet, MSDS, and a third-party analysis of our product.

We also offer a complementary service to our customers, based on a soil analysis provided by the customer, a personalized report identifying whether Gypsum is recommended, the purity level needed, and a suggested application rate. The report will be generated by a highly qualified agronomist who could also be available to explain the report in detail.

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1 McKinsey & Co.: Agriculture and Climate Change, pg. 6, 7

2 Loveday J. (1981) Soil Management and amelioration. Abbot TS, Hawkins CA and Searle, PGE, eds. National soils conference 1980. Review Papers, pp 39-57. Glen Osmond, Australia: Australia Society of Soil Science Inc.

3 Carbon 180: Leading with Soil, pg. 10

4 Liming Chen and Warren Dick; 2011 from "Gypsum as an Agricultural Amendment. http://ohioline.osu.edu/b945/b945.pdf"

5 Loveday J. (1981) Soil Management and amelioration. Abbot TS, Hawkins CA and Searle, PGE, eds. National soils conference 1980. Review Papers, pp 39-57. Glen Osmond, Australia: Australia Society of Soil Science Inc.

6 Dr. Brent Rouppet, Ph.D. states, “Calcium Sulfate enhances water use efficiency so 25 to 100 % more water is available in calcium sulfate-treated soils compared to untreated soils.”

7 Dr. L. Oldham (2019) Secondary Plant Nutrients: Calcium, Magnesium, and Sulfur. Mississippi State University Extension, MS 39762. Information Sheet 1039 (POD-07-

8 McKinsey & Co.: Agriculture and Climate Change, pg. 6

9 http://www.soilsolutions.net/wp-content/uploads/2015/02/Gypsum-reduces-methane-emission-during-the-stora ge-of-pig-slurry.pdf

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