Wheat crop
Tessenderlo Kerley

Crop Nutrition

Producer of sulfur-based specialty fertilizers for agriculture.

Products
Nitrification Inhibition Rectangle

Prevent Nitrogen Loss

Learn how by adding Thio-Sul to your liquid nitrogen blends, you can both protect against nitrogen losses as well as provide essential sulfur your crops need to thrive.

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soybean rows

Crops

Learn more about specific crop nutrition.

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Agronomist with Sprinklers

Meet Our Agronomists

Meet our highly educated and experienced agronomists who are positioned to provide growers with expert guidance and product knowledge that is specific to their location in the U.S.

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Seedling in Soil

Sustainability

Sustainability and stewardship are our business model. 

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Latest Blogs

  • tractor applying fertilizer in young corn field

    Thio-Sul and KTS Can Extend Your UAN Supply

    When making your liquid nitrogen selection, consider adding higher rates of Thio-Sul®, a concentrated liquid containing both nitrogen and thiosulfate sulfur. By adding more Thio-Sul to your urea ammonia nitrate (UAN) solution, you can effectively stretch the nitrogen fertilizer while providing essential sulfur nutrition to the growing crop.

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  • 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.

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  • 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.

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Pivot Irrigation

For over 100 years,

Tessenderlo Kerley, Inc. has demonstrated its commitment to nurturing crop life through innovation, research, and the development of Tessenderlo Kerley fertilizers. Our diverse product portfolio addresses the challenges of modern agriculture by combining essential nutrients to improve soil health, reduce nitrogen loss, increase water infiltration and maximize nutrient uptake.

About Us