CaTs® is a neutral to basic, chloride-free, clear solution, containing 6 % calcium (Ca w/w) and 10 % sulfur (S w/w). A liter of CaTs® contains 75 grams of calcium (Ca) and 125 grams of sulfur (S) in the thiosulfate form. It can be applied to a wide variety of crops.


  • Improves firmness of fruits and vegetables thus reducing bruising
  • Improves cell structure and plant strength
  • Increases yield and shelf life
  • Provides quickly available and extended release sulfur
  • Improves phosphorus and micronutrient availability and uptake by the crop
  • Conditions the soil allowing better water infiltration
  • Leaches out harmful salts such as sodium

CaTs® may be applied by drip, micro-sprinkler, sprinkler, flood irrigation, pivot system, surface broadcast, banded or watered in. It may be blended with other fertilizers or applied as a foliar treatment on selected crops. The calcium requirement for most crops increases during periods of rapid growth and early fruit development and CaTs® is the ideal solution for providing both calcium and sulfur in a readily available liquid form to crops. As a soil amendment, CaTs® may be used to improve water infiltration and aid in the leaching of harmful salts.

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    Long-term partnership with Kemira

    Under the terms of this agreement, Kemira will produce premium SOP fertilizers (both standard and water-soluble grade) at its plant in Helsingborg (Sweden) and Tessenderlo Kerley International will market these products. ​This agreement becomes operational at the beginning of 2021. This step w
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    New terminal for our liquid fertilizers in Sinaloa, Mexico

    Tessenderlo Kerley Mexico is ready to start operations at the new terminal located in Sinaloa in Northwest Mexico! This region has 866,000 hectares under irrigation, including 783,000 hectares of grains, 63,000 hectares of cash crops, and 20,000 hectares of perennials (mostly orchards).
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    The importance of balanced fertilization

    The discovery of the possibility to convert inert atmospheric nitrogen into ammonia in 1913 led to a considerable increase in nitrogen fertilizer production. The rapidly growing food demand, which is linked to an exploding global population, explains the development of nitrogen fertilizer consumption in agriculture.

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