Mosaic Product Turns 70

K-Mag, a unique three-in-one combination fertilizer produced by The Mosaic Co. is celebrating its 70th anniversary. In honor of this milestone, K-Mag continues to look to the future with plans for an expansion to the Carlsbad Production Facility as well as the unveiling of a new logo.

“K-Mag has stood the test of time for 70 years,” says Don Purvis, Carlsbad plant manager. “Advances in equipment and technology and the steady streamlining of operating practices have enabled us to achieve continuing gains in productivity. We are excited about the future and look forward to more new growth and expansion opportunities.”

Since 1939, K-Mag has been mined and processed at the Carlsbad, NM facility — where the world’s largest and purest deposits of langbeinite ore are found. Langbeinite, a potassium magnesium sulfate mineral, was one of the last minerals formed as water evaporated from the large, ancient ocean that is now New Mexico.

“The K-Mag PREMIUM grade granulation plant had an initial capacity of 200,000 tons per year, which was increased to 400,000 tons per year through progressive improvements. The capacity will be raised even further to 600,000 tons per year,” says Purvis. About 275 people work underground in a variety of mining functions. With mine openings in excess of 4,000 miles, the Carlsbad facility is a veritable underground city that operates around the clock, seven days per week, in a constant environment of 74°F.

K-Mag produced at the Carlsbad facility is available in three different grades — Premium, Granular, and Standard — depending on the cropping situation and specific needs of the dealer or grower. Granulated, Premium grade offers many advantages including less abrasiveness, lower bulk density, more uniform particle size, and a larger SGN number, which makes it more compatible with other blended materials. About half of the finished K-Mag product is delivered to U.S. markets, with the rest destined for international markets. Visit to learn more about specifications for each grade.

“We are proud of K-Mag,” says Dr. Dan Froehlich, director of Agronomy for The Mosaic Co. “It is a unique fertilizer with a three-in-one combination of potassium (K), magnesium (Mg) and sulfur (S), all present in the water-soluble sulfate form. The sulfate form allows for immediate nutrient uptake. And, in spite of the increase in crop nutrient prices over the last two years, fertilizing for optimum yields with K-Mag is an exceptional value to growers and can still produce a profitable return investment.” Other unique K-Mag traits include a neutral pH so it won’t acidify the soil, and a low chloride content — less than 3 percent — so it won’t harm sensitive crops. It also blends well with most common fertilizer materials and is balanced for efficient crop production. “Balance in soil fertility management should always be the goal and K-Mag can be an important tool in helping to reach that goal,” says Froehlich.

With changes over the past 70 years in the climate, soil conditions and the economy, K-Mag has been a crop nutrient constant that growers know they can count on. And while also known as Sul-Po-Mag and S-P-M in selected geographies, K-Mag will now be marketed as one brand throughout the world. In continuing to change with the times, and in celebration of 70 years, K-Mag is introducing a dynamic new look with an updated logo. “The new logo reflects the superior quality, high performance and reliability that people have come to expect from K-Mag,” says Barb Kula, Mosaic’s vice president of Marketing. “The new logo’s distinctive dots are a visual reminder that K-Mag is a three-in-one nutrient that delivers potassium, magnesium, and sulfur in every granule. But we realize that K-Mag is much more than a logo. It is about people who are dedicated to producing the highest-quality product, providing the best customer service and offering quality agronomic support to growers throughout the world.”

Leave a Reply

One comment on “Mosaic Product Turns 70

  1. I worked for Western Ag. Minerals for 12 years, and prior to that for Duval Corporation for 18 years, until November 1997, when we were acquired by IMC. Our primary product was K-Mag, and for the period of 1990 thru 1997 I served as Manger of product developement and quality assurance. One of the innovations I developed and obtained a provisional patent on, was an immediatly water soluble grade of K-Mag that we called Aqua-Mag. As Western Ag. we had in our 1997 budget, a commitment and funds to build a plant to produce up to 100,000 tons per year of Aqua-Mag. The provisional patent has since expired, and since we did fairly extensive field research and promotion of Aqua-Mag, it would not now be patentable. It was found that Aqua-Mag could be used in fertigation, animal nutrition (the rapid solubility led to greatly enhanced efficiency), could be used in fluid fert. formulations,wheras regular K-Mag could not, and could be used as a low salt index, low corrosion de-icer for road and home use (I used it for a number of years in Wisconsin). With the purchase of Western Ag by IMC, those plans were scrapped, as IMC then owned the only 2 producers of Sulphate of Potash Magnesia in the world. The process technology is not terribly difficult, but very precise procedures must be used. Since there is now a 2nd producer of Sulphate of Potash Magnesia (Intrepid Chemical), I would hope to see one of these firms extensively explore what we considered to be a very needed and viable product.

    Morris Marsolek

Fertilizer Stories

Flooded corn in Indiana
Crop InputsDelaying The Fertilizer Decision
September 1, 2015
Comments gathered from several retailers recently evidenced a classic good-news-bad-news scenario. Good news is prices and supplies of nitrogen, phosphate, Read More
FertilizerFall-Applied Phosphorus: A Rooted Investment
August 28, 2015
As commodity prices decrease and input prices continue to rise, farmers are seeking more efficient strategies for meeting a high Read More
FertilizerCF Nitrogen Investment: What It Means For CHS
August 13, 2015
A record $2.8 billion investment in nitrogen fertilizer manufacturing through CF Industries Nitrogen, LLC, is a historic step that links Read More
Carl Casale of CHS
FertilizerCF Industries, CHS To Form Strategic Venture
August 12, 2015
CF Industries Holdings, Inc. and CHS Inc. announced today that they have agreed to enter into a strategic venture.  CHS, Read More
Top 100 Articles
Southern States Co-op Storefront
CropLife 100Southern States: Always Ag Authentic
October 1, 2015
If people were to judge a book by its cover when visiting Southern States Cooperative’s (SSC) Richmond, VA, corporate headquarters, Read More
Crop InputsLand ‘O Lakes, United Suppliers Finalize Merger
August 24, 2015
According to a press release on August 24, owners of United Suppliers, Inc. and members of Land O’Lakes, Inc. “have Read More
West Central Cooperative, Jefferson, IA
CropLife 100Iowa Cooperatives To Explore Unification
August 19, 2015
The boards of directors at two of Iowa’s leading farmer-owned cooperatives yesterday signed a letter of intent to study the Read More
CropLife 100Southern States Coop Hosting Drone Flight This Friday
August 3, 2015
Southern States Cooperative — No. 9 on the CropLife 100 — is hosting an FAA-approved drone demonstration at Grandview Farms Read More
CropLife 100Aligned Ag Distributors Adds Four New Owners
July 30, 2015
Aligned Ag Distributors LLC has announced the addition of four new customer/owners to Franklin Holding Co. LLC. They are: The Read More
CropLife 100Pinnacle Purchases California-Based Specialty Crops Retailer
July 20, 2015
Pinnacle Agriculture Holdings has successfully acquired California-based NH3 Service Co.  Operating as part of Pinnacle’s Performance Agriculture brand, the new locations Read More
Latest News
Corn Stover Stubble
Crop InputsNew Microbial Product Unlocks Nutrients, Reduces Costly…
October 6, 2015
Trash, stover, residue — regardless of the term, postharvest debris is increasing and causing more frustration and detriment to overall soil Read More
Precision AgPurdue Releases 2015 Precision Ag Services Dealership S…
October 5, 2015
In the spring of 2015, CropLife magazine and the Departments of Agricultural Economics and Agronomy at Purdue University conducted the Read More
Monsanto Sign
Eric SfiligojMonsanto And Syngenta: Stonewall Street
October 5, 2015
Recently, I was taking part in an industry-related golf tournament and happened to find a lost golf ball sporting a Read More
Greg Musson, Gar Tootelian
StewardshipGar Tootelian, Inc.: Making A Difference In ‘The Valle…
October 5, 2015
For the Environmental Respect Awards program, sponsored by DuPont Crop Protection with assistance from CropLife® and FCI magazines, the Ambassador Read More
Fiberglass Tank Workers at Precision Tank & Equipment
EquipmentPrecision Tank & Equipment: 50 Years Of Growing
October 4, 2015
Looking out onto the production floor of the fiberglass/stainless steel tank manufacturing facility in Ligonier, IN, David Hemming, president/CEO for Read More
Syngenta Sign
Crop InputsScience & Strategy Spur Syngenta’s Crop Protection …
October 3, 2015
Developing a crop protection portfolio is a lot of science and a little serendipity. “There are a number of things Read More
Dan Schaefer and Jason Solberg IFCA
StewardshipIllinois Fertilizer & Chemical Association: Tacklin…
October 2, 2015
You’ve got to be doing something right if lots of people keep coming to you for advice. That’s what’s happening Read More
LegislationFall Fertilizer Transportation Could Be At Risk With Po…
October 1, 2015
Failure by Congress to extend the deadline for the implementation of Positive Train Control (PTC) on the railroads could gridlock Read More
Weed ResistancePPO Resistant Pigweed Hits The Mid-South
October 1, 2015
If you’re a soybean grower already entangled in troublesome weed resistance in the state of Arkansas, Mississippi or Tennessee, you Read More
Weed ResistanceManagement Strategies That Worked In 2015
October 1, 2015
For better or worse, throughout many regions of the country 2015 provided the optimal growing season conditions for both crops, Read More
ManagementAn Update On CropLife America’s Meeting & The Outlo…
October 1, 2015
Editors Paul Schrimpf and Eric Sfiligoj review last week’s CropLife America Annual Meeting and how crop protection companies believe next Read More
Patriot 4440 Sprayer close up
Weed ResistanceManaging Herbicide-Resistant Weeds: The Importance Of ‘…
October 1, 2015
As the problem of herbicide-resistant weeds has spread, crop protection product suppliers have charged their top researchers with coming up Read More
Adjuvants loading
Weed ResistanceAdjuvants Trending Up For Fighting Weed Resistance
October 1, 2015
Gone with the wind are the days when adding an adjuvant to the spray tank was looked at with major Read More
Case sprayer nozzle closeup
Weed Resistance8 Best Management Practices For Spray Drift Control
October 1, 2015
Dr. Robert Wolf, Wolf Consulting & Research, LLC, Mahomet, IL, is one of the leading experts in drift management strategies. Read More
EquipmentUSC Releases New U-BATCH Treater
October 1, 2015
U-BATCH is one of the most versatile batch treaters on the market today, according to USC. Capable of treating most Read More
Southern States Co-op Storefront
CropLife 100Southern States: Always Ag Authentic
October 1, 2015
If people were to judge a book by its cover when visiting Southern States Cooperative’s (SSC) Richmond, VA, corporate headquarters, Read More
Industry NewsVerdesian Life Sciences Names New Vice Presidents For P…
September 30, 2015
As farmers seek advanced, innovative ways to keep their operations profitable and efficient, companies must rise to the challenge to Read More
Tim Glenn, Dupont Crop Protection
Crop InputsDuPont Crop Protection Appoints New President
September 30, 2015
DuPont has named Timothy P. Glenn as president of its Crop Protection business effective October 1, succeeding Rik Miller who Read More