News

  • School kids on tour of Defiance, OH plant

    Growing Communities, Inspiring Futures: Tessenderlo Kerley Shares its 2025 Community Outreach Story
    Thursday, January 22, 2026
    Tessenderlo Kerley, Inc. announced the highlights of its 2025 community outreach efforts, showcasing a year defined by generosity, connection and support for local communities across North America. Driven by a long-standing commitment to outreach within the communities it serves, Tessenderlo Kerley team members championed initiatives supporting...

  • Group photo of Tessenderlo Kerley team members at Thrive and Grow Garden

    ‘Helping Hands for the Holidays’ Delivers Needed Support for Families & Neighbors Across North America
    Wednesday, December 31, 2025
    Tessenderlo Kerley’s commitment to giving back is a year-round effort. But at the end of each year, that spirit shines even brighter as employees across North America come together to uplift their communities through Tessenderlo Kerley’s annual Helping Hands for the Holidays initiative. During the 2025 holiday season, each of Tessenderlo Kerley’s...

  • Potatoes in soil

    Tessenderlo Kerley Acquires Eastman’s Metam Labels in the U.S and Canada
    Friday, October 3, 2025
    Phoenix, AZ – October 3, 2025 — Tessenderlo Kerley Inc. is pleased to announce the acquisition of Eastman’s United States and Canadian Crop Protection Metam Sodium (CLR™ 42%) and Metam Potassium (KLR™ 54%) product labels, marking a purposeful expansion of our soil fumigation portfolio and reinforcing our commitment to delivering innovative, grower...

  • Defiance, Ohio Ribbon Cutting Ceremony

    New Tessenderlo Kerley Plant Brings Innovation and Opportunity to Defiance, Ohio
    Thursday, August 21, 2025
    DEFIANCE, OHIO, August 21, 2025 – Tessenderlo Kerley, Inc. proudly celebrated the grand opening of its newest liquid fertilizer production facility in Defiance, Ohio—a major milestone in the company’s commitment to advancing sustainable agriculture across North America.

  • Burley team being awarded with OSHA VPP award

    Burley Team Celebrates Top-Tier Safety Standards with VPP Revalidation
    Monday, August 18, 2025
    Ensuring that our team members go home safely to their loved ones each day has always been priority No. 1 for Tessenderlo Kerley – and our manufacturing plant in Burley, Idaho, continues to be the gold standard for safety on the job! In March, the Burley team received its latest Voluntary Protection Program (VPP) revalidation from OSHA following a...

  • Michaud Team 50 Year Anniversary

    Michaud’s Milestone: 50 Years of People, Purpose and Progress
    Wednesday, July 30, 2025
    For 50 years, this strategically located terminal has been more than a logistics hub — it’s been a pillar of progress, delivering Crop Nutrition, Crop Protection and industrial products to customers across the region and beyond.

  • moleko logo

    moleko Unveils New Brand Names for Trusted Chemical Solutions: ekoFEND™, ekoFITE™, and ekoSURE™
    Tuesday, July 1, 2025
    moleko, a leader in high-purity chemical solutions, is proud to announce the launch of three new product brand names that reflect its ongoing commitment to quality, sustainability, and industry-specific performance. ekoSURE™ ekoFITE™ ekoFEND™

  • commercial-meeting

    Shaping the future: Global Commercial Meeting 2025
    Wednesday, June 18, 2025
    At the beginning of June, our commercial team gathered in Belgium for the 2025 edition of our annual Global Commercial Meeting — a vibrant gathering of minds united by a shared mission; to shape the future of our business.

  • Dumas, Texas Plant Celebrates 60 Year Anniversary

    Dumas Plant, the Only North American Producer of a Key Mining Chemical, Celebrates 60 Years
    Monday, June 16, 2025
    How does Tessenderlo Kerley’s smallest but oldest plant, located in a small town in the Texas panhandle, provide one of the most important mining products in North America? Through a daily commitment to safety, sustainability and each other – a commitment that was celebrated in June as our Dumas, Texas plant celebrated 60 years of operational...

  • Dr. Zack Ogles

    Tessenderlo Kerley Publishes Groundbreaking Research on Thiosulfate Fertilizers in the Soil Science Society of America Journal
    Thursday, May 8, 2025
    Phoenix, AZ –May 8, 2025 – Tessenderlo Kerley is pleased to announce the publication of a pivotal study in the Soil Science Society of America Journal, titled “Potential of Ammonium Thiosulfate and Potassium Thiosulfate to Inhibit Nitrification in Soils.”

  • Tessenderlo Kerley Agro Rebrand

    Tessenderlo Kerley Announces Rebranding of Agro Business Units
    Tuesday, February 4, 2025
    PHOENIX, ARIZONA, January 1, 2025 – Tessenderlo Kerley, Inc., a leader in agricultural solutions, is excited to announce the integration of its Crop Nutrition (Crop Vitality) and Crop Protection (NovaSource) businesses under a unified brand name, Tessenderlo Kerley. This strategic move is designed to streamline operations, leverage synergies, and...

  • event5

    Celebrating Innovation and Sustainability at the Thio-Sul® Conference
    Friday, December 20, 2024
    Last week, Tessenderlo Kerley had the pleasure of hosting the first-ever Thio-Sul® Conference in Belgium. Together with many esteemed customers from all over Europe, we celebrated the opening of our new Thio-Sul® plant in Geleen, the Netherlands, and the recent homologation as a double inhibitor preventing nitrogen losses in France.

  • geleen

    Opening of Tessenderlo Kerley plant at Chemelot
    Monday, November 25, 2024
    On Thursday 21 st of November, Tessenderlo Kerley International proudly opened its new liquid fertilizer plant at the Chemelot site in Geleen. This strategic choice of location underscores Chemelot's position as a circular and sustainable industrial site and marks an important step in the shared ambition to create a fully climate-neutral and...

  • Tessenderlo Kerley Aquires Tigrer-Sul

    Tessenderlo Kerley Inc. Acquires Tiger-Sul Products, LLC
    Wednesday, November 6, 2024
    Phoenix, AZ – November 6, 2024 – Tessenderlo Kerley is pleased to announce that it has acquired Tiger-Sul Products, LLC, a North American focused provider of sulfur-based fertilizer products, from Platte River Equity. The acquisition closed on November 6, 2024. The acquisition strengthens Tessenderlo Kerley’s specialty fertilizer portfolio as...

  • Corn Field Irrigation

    Sustainable Solutions: Patent Pending Nitrification Inhibition Research to Elevate Crop Production
    Tuesday, November 5, 2024
    Phoenix, AZ – November 5, 2024 – Tessenderlo Kerley, a leader in innovative crop nutrition solutions, announces new advancements in nitrification inhibition research led by Dr. Zack Ogles, which is currently patent pending.

Community Involvement

  • Alfalfa field

    Potassium and Sulfur: Cornerstones of High-Yield, High-Quality Alfalfa

    Written by Danica Kluth, Tessenderlo Kerley Agronomist High producing alfalfa removes large amounts of nutrients from the soil every growing season. Among the most critical and often the most under applied nutrients in forage systems are potassium and sulfur.
  • Lettuce rows

    Managing Nitrogen Demand in Leafy Greens with N-Sure

    Maintaining adequate nitrogen in leafy green production is critical whether in South Florida or in the Salinas Valley of California. While nitrogen is essential to plant growth and development, it is also subject to losses that can affect crop yield and negatively impact the environment.
  • Soybean Sprouting

    Better Potential for Soil-Applied Chemicals

    Your crops may benefit from a soil amendment that loosens your soil, which ultimately may improve aeration, and dispersion of other soil inputs. Solmenda®, a soil amendment that provides plant-available calcium and sulfur, also leaches away excessive salts.
  • Onion field

    Essential Nutrients for Onion Yield and Quality

    CaTs® is a 100% water soluble calcium with a 0-0-0-10S-6Ca analysis. CaTs applied through the irrigation system can supply the necessary calcium and sulfur at critical growth and uptake times. Onion trials conducted in the PNW have show increased yield and improved storability.
  • Processing Tomatoes

    Drip It Like It’s Hot: A Technical Guide to Using Calcium Thiosulfate in Processing Tomatoes

    In the pursuit of maximizing yield and fruit quality in processing tomato production, nutrient management remains a cornerstone of agronomic success. Among the various inputs available to growers, calcium thiosulfate ( CaTs®) has been a valuable tool for decades—particularly when applied through drip irrigation systems. CaTs delivers essential...
  • Almonds on a branch

    The Enigma of Potassium for Tree Nut Growers

    For almond and pistachio growers, one of the most critical, consequential, and confusing decisions when making a nutrient management plan is potassium fertilization. It’s critical, due to the importance of potassium in several physiological processes, and especially its role in maximizing nut size and total yield.
  • Tomatoes and Onions

    Solutions From Start to Finish for Processing Tomatoes

    Get Your Soil Spring-Ready! Sectagon® effectively controls common pests found in growers’ fields, such as weeds and soil-borne diseases, and suppresses nematodes, all of which can harm growing plants and reduce yields.
  • The value of calcium in melons

    The Value of Calcium in Melon Production

    Did you know that the nutrient calcium (Ca) plays a critical role in fruit quality long after harvest? Providing a soluble form of calcium at critical growth stages in-season, helps to promote strong cell walls and extend produce shelf life after harvest.
  • Young Potato Field

    How to Boost Potato Yield with Seed-Safe Potassium

    It’s no secret that potatoes are a nutrient demanding crop, especially for potassium. In the first 6-10 weeks, potatoes will take up the majority of nutrients needed in the entire growing season. Being that a potato requires large amounts of potassium, getting an early boost of nutrients it needs at planting is beneficial for several reasons.