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Sustainable specialty fertilizers

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A unique range of high-performance sulfur-based liquid, solid and soluble fertilizers for more precise plant nutrition to optimize crop yield, quality, and sustainability.
Our range of products
  • site Geleen

    Great progress made at Tessenderlo Kerley Geleen

    Mid-January, the final permits for the Tessenderlo Kerley Geleen Thio-Sul® production facility were granted and since then, work on the new plant has been running at full speed. As was the case with the construction of our Thio-Sul® plant in Rouen, France, which was completed in 2017, all of the construction works are being supervised by one main...
  • esseco

    Acquisition of marketing & sales activities for ammonium thiosulfate fertilizers produced by Esseco Srl in Italy

    Tessenderlo Group is pleased to announce that it has signed an agreement to acquire the marketing and sales activities for ammonium thiosulfate (ATS) fertilizers produced by Esseco Srl (part of Esseco Group) in Trecate, Italy. These ATS fertilizers will be marketed by Tessenderlo Group’s business unit Tessenderlo Kerley International. Tessenderlo...
  • groundbreaking ceremony

    Construction on schedule for new plant for liquid fertilizers in the Netherlands

    Today Tessenderlo Kerley International held a groundbreaking ceremony to start the construction works for its new liquid fertilizer plant at the Chemelot site in Geleen, the Netherlands. Tessenderlo Kerley International is constructing a Thio-Sul® (ammonium thiosulfate/ATS) manufacturing plant, which will be used as a fertilizer for broad-acre...
  • Berries

    Growing berries in Morocco

    Discover how our Thio-Sul®, KTS® and CaTs® fertilizers have impacted berry quality and micronutrient uptake. They also helped solve specific problems in the blueberry and raspberry growing process, such as low temperatures, high pH and salinity in soil and water in this Moroccan berry farm.
  • blandina barge

    Ensuring 4,500 less truck deliveries each year

    Thanks to our barge Blandina, which is transporting hydrochloric acid from our Tessenderlo Kerley plant in Ham (Belgium) to the site of Kuhlmann Europe in Loos (France), we are ensuring 4,500 less truck deliveries each year. Therefore, this waterway transport approach means that approximately 1.6 million km of road travel is avoided each year. You...
  • reduction of energy

    Our journey towards a more sustainable future

    See how the conversion of our furnaces leads to a cleaner energy source.
  • corn France

    How CaTs® can help improve sodic soil structure

    Régis, Lead Agronomy Manager of Tessenderlo Kerley, explains the challenges of a sodic soil at the corn fields in France, and how we can solve this in our new People on the Field video.
  • uienteelt

    CaTs®, a new calcium fertilizer applied in onion cultivation

    Calcium is an important element for plants in addition to nitrogen, potassium and phosphate. Often the amount of calcium in the soil is not a problem but the uptake can be limited. This is due to the presence of sulfate, carbonate and phosphate. Calcium compounds with these ions in fact dissolve poorly. Because of the divalent charge of calcium it...
  • tomatoes

    Amazing results on tomatoes in Costa Rica

    Location: Naranjo, Alajuela, Costa Rica Farm: Chicago farm, Carrot Export company Crop: tomatoes, variety Turrialba Application done through drip fertigation. Agronomist: Elizabeth Moreno Demo field trial with CaTs® and MagThio® on tomato crops CaTs® and MagThio® liquid fertilizers are being applied through the crop cycle...
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