Tessenderlo Kerley

Helps growers protect crops with a broad selection of proven products, including certified organic options for agricultural use.

Supplies immediately available nitrogen and sulfur while helping reduce nitrogen loss and support crop nutrient uptake.

Supplies immediately available potassium and sulfur while helping crops manage stress and growers reduce nitrogen loss.

Helps growers supply calcium and sulfur, manage soil salts and water infiltration, reduce nitrogen losses, and support crop quality and storability.

N-Sure provides flexible soil and foliar nitrogen application, supporting gradual nutrient availability and direct leaf uptake.

Provides seed-safe potassium and sulfur at germination to support early plant uptake and help protect young seedlings from environmental risks.

Supplies liquid nitrogen and phosphorus in a fertilizer available to growers in Mexico.

SoluPotasse supplies soluble potassium and sulfur while supporting crop stress resistance, nutrient availability, and fertigation across a range of crops.

Supplies potassium and sulfur while supporting crop stress resistance, storage quality, and flexible fertilizer blending.

Helps growers address potassium deficiency, support crop yield and quality, and protect produce during transport and storage.

Customers get tailored, code-compliant fabrication supported by engineering, inspection, and project services from design through installation.

Recover and process sulfur into high-value products through efficient, reliable operations that support agricultural, industrial, and community needs.

Crop protection portfolio

Tessenderlo Kerley supplies a portfolio of pesticides and solar protectants for niche agricultural uses worldwide. Across the U.S. and Canada, the portfolio includes protectants, herbicides, fumigants, insecticides and fungicides. The company describes these products as proven and effective, with decades of cost-effective results for growers. It continually develops new labels for existing products and offers certified organic options.

• Address Multiple Crop Protection Needs
  Growers can access several types of crop protection products through one portfolio, including products for niche agricultural uses.
• Access Proven, Cost-Effective Products
  The portfolio's products have delivered cost-effective results for growers over decades, according to the company.
• Choose Certified Organic Options
  Certified organic crop protection options give growers additional choices within the portfolio.
• Control Common Field Weeds
  Sectagon is described as controlling common weeds found in growers' fields, which can harm growing plants and reduce yields.
• Control Soil-Borne Diseases
  Sectagon is described as controlling soil-borne diseases in growers' fields, helping address threats that can harm growing plants and reduce yields.
• Expand Existing Product Uses
  Ongoing label development adds new labeled uses for existing products, as illustrated by a label update expanding Linex herbicide use to alfalfa during dormant periods and between cuttings.
• Suppress Field Nematodes
  Sectagon is described as suppressing nematodes found in growers' fields, a crop threat that can harm growing plants and reduce yields.

Thio-Sul

Thio-Sul is a liquid ammonium thiosulfate fertilizer that supplies immediately available nitrogen and sulfur. With a 12-0-0-26S analysis, it can be added to UAN to help reduce nitrogen loss and support crop nutrient uptake. It can be applied through most irrigation systems and is easy to mix and handle with most liquid fertilizers.

• Supply Essential Crop Nutrients
  Provides immediately available nitrogen and sulfur to support crop growth and the production of chlorophyll and amino acids.
• Improve Nitrogen Use Efficiency
  Adding Thio-Sul to UAN can help reduce nitrogen loss by slowing nitrification, lowering the chances of nitrogen leaching and denitrification, while also enhancing nitrogen uptake by the crop.
• Deliver Nitrogen And Sulfur
  The 12-0-0-26S analysis identifies Thio-Sul as a liquid fertilizer supplying nitrogen and sulfur.
• Use AAPFCO-Listed Inhibition
  Thio-Sul's listing as a nitrification inhibitor by AAPFCO identifies this stated product property.
• Blend With Liquid Fertilizers
  Thio-Sul is compatible with most liquid fertilizers, including UAN solutions.
• Support Phosphorus Uptake
  Applying Thio-Sul in the same retention zone can improve phosphorus uptake.
• Help Combat Citrus Greening
  Thio-Sul is identified as helping growers combat citrus greening.
• Apply Through Irrigation Systems
  Growers can apply Thio-Sul through most irrigation systems.
• Rely On Decades Of Experience
  The product is backed by the company's stated experience producing and applying ammonium thiosulfate fertilizer, along with decades of trial data and customer success.
• Improve High-pH Soil Structure
  Thio-Sul can improve soil structure in high-pH soils.
• Enhance Water Infiltration
  Thio-Sul can enhance water infiltration in soil.
• Assist Crop Residue Breakdown
  Thio-Sul can assist with breaking down residues from previous crops.
• Simplify Mixing And Handling
  The product is described as easy to mix and handle.

KTS | Potassium Thiosulfate

KTS is a highly soluble, chloride-free liquid fertilizer containing immediately available potassium and sulfur, with an analysis of 0-0-25-17S. Described as the highest-analysis liquid potassium and sulfur source on the market, it supports crop fertility programs that require defined amounts of these nutrients, including starter and side-dress applications. KTS can be tank mixed with liquid nitrogen and phosphorus fertilizers and applied through all types of irrigation systems. Its nitrification inhibition properties can reduce nitrogen loss, while it can also support soil structure, water infiltration, residue breakdown, and crop nitrogen uptake.

• Supply Essential Potassium And Sulfur
  Provides immediately available potassium and sulfur to help meet crop nutrient requirements and support plant functions and the production of important crop compounds.
• Reduce Nitrogen Loss
  Adding KTS to UAN can slow nitrification and reduce the chances of nitrogen leaching and denitrification.
• Deliver Concentrated Potassium And Sulfur
  Its 0-0-25-17S analysis provides a concentrated liquid source of potassium and sulfur for crop fertility programs.
• Support Crop Stress Tolerance
  KTS provides potassium that supports plant stress tolerance and water management, helping crops cope with drought stress.
• Apply Through Irrigation Systems
  Apply KTS through all types of irrigation systems to manage crop potassium and sulfur requirements through fertigation.
• Apply A Soluble, Chloride-Free Source
  The highly soluble, chloride-free formulation gives growers a liquid potassium and sulfur source for their fertility programs.
• Target Potassium And Sulfur Applications
  Use KTS to supplement fertility programs when a defined amount of potassium or sulfur is needed per acre, including for starter or side-dress applications.
• Blend With Liquid Fertilizers
  Tank mix KTS with listed liquid nitrogen and phosphorus fertilizers, including UAN and ammonium polyphosphate solutions, to use it within compatible fertilizer blends.
• Enhance Crop Nitrogen Uptake
  KTS can enhance crop nitrogen uptake and help crops effectively utilize nitrogen.
• Improve High-pH Soil Structure
  KTS can improve soil structure in high-pH soils as part of a crop fertility program.
• Enhance Water Infiltration
  KTS can enhance water infiltration, supporting the movement of water into the soil.
• Assist Crop Residue Breakdown
  KTS can assist in breaking down residues from previous crops.

CaTs® (Calcium Thiosulfate)

CaTs is a 100% soluble calcium thiosulfate fertilizer with a 0-0-0-10S-6Ca analysis. It supplies readily available calcium and sulfur, helps displace salts from the root zone, improve water infiltration, and reduce ammonia loss from urea. When added to UAN, its nitrification inhibition properties slow the conversion of ammonium to nitrate, helping reduce nitrogen leaching and denitrification. CaTs can be applied through all types of irrigation systems and is described as a dual nutrient source-acidifier for combating citrus greening.

• Supply Readily Available Calcium And Sulfur
  Provides soluble calcium and sulfur to support healthy plant growth and deliver essential structural building blocks for crops.
• Displace Harmful Salts From The Root Zone
  Helps move harmful salts away from the root zone, supporting soil management for growers.
• Reduce Nitrogen Leaching And Denitrification
  Slowing ammonium conversion to nitrate helps reduce the chances of nitrogen leaching and denitrification when CaTs is added to UAN.
• Improve Water Infiltration
  Supports improved water movement through soil and can be delivered through all types of irrigation systems.
• Improve Produce Density, Firmness, And Appearance
  Supports improvements in the density, firmness, and appearance of fruits, vegetables, and nuts.
• Extend Crop Storability And Shelf Life
  Helps extend how long harvested crops can be stored and their shelf life.
• Reduce Ammonia Loss From Urea
  Helps reduce ammonia loss from urea, supporting more effective nitrogen management.
• Enhance Crop Nitrogen Uptake
  Helps enhance nitrogen uptake by the crop.
• Support Citrus Greening Management
  Combines calcium and sulfur as a dual nutrient source-acidifier described for use in combating citrus greening.
• Deliver A 0-0-0-10S-6Ca Analysis
  Provides a stated fertilizer analysis of 0-0-0-10S-6Ca.
• Improve Soil Structure In High-pH Soils
  Helps improve soil structure in high-pH soils as part of crop and soil management.
• Tank Mix With UAN Or Liquid Urea
  The nitrogen- and chloride-free product can be tank mixed with UAN or liquid urea.
• Assist Previous Crop Residue Breakdown
  Supports the breakdown of residues from previous crops.

N-Sure

N-Sure is a high-analysis, 28-0-0 nitrogen fertilizer featuring Triazone nitrogen. Applied to soil, its nitrogen is released gradually through microbial activity; applied to foliage, it acts as a humectant to keep leaf surfaces moist longer and support direct uptake into leaf tissue. N-Sure can be mixed with UAN solution in any ratio and applied through all types of irrigation systems.

• Support Soil And Foliar Nitrogen Uptake
  Use N-Sure on soil for gradual nitrogen release through microbial activity or as a foliar application to support direct uptake of Triazone nitrogen into leaf tissue.
• Provide Nitrogen Release For Up To 10 Weeks
  N-Sure supplies soil-applied Triazone nitrogen that is released gradually through microbial activity, with release lasting up to 10 weeks in the soil.
• Resist Nitrogen Leaching
  The Triazone nitrogen in N-Sure resists leaching, allowing for better plant absorption.
• Improve Leaf Coverage And Nitrogen Absorption
  N-Sure supports coverage and nitrogen absorption into leaf tissue. Its humectant action keeps leaf surfaces moist longer, allowing direct uptake of the Triazone molecule.
• Blend With UAN And Many Crop Protection Products
  N-Sure can be mixed with UAN solution in any ratio and is compatible with many crop protection products, providing flexibility in fertilizer and crop protection programs.
• Supply Nitrogen In A 28-0-0 Analysis
  N-Sure provides a high-analysis nitrogen fertilizer option with a listed 28-0-0 analysis.
• Apply Through All Types Of Irrigation Systems
  Apply N-Sure through any type of irrigation system, enabling it to be used with different irrigation setups.

K-Row 23

K-Row 23 is a liquid potassium and sulfur fertilizer that delivers seed-safe, plant-available nutrients at germination. Used as an in-furrow starter fertilizer, it supports early nutrient uptake and helps protect young seedlings from environmental risks. Its low salt-out temperature is suited to early-season planting conditions. K-Row 23 can be blended with UAN and ammonium polyphosphate solutions and is available for multiple application methods. Its analysis is 0-0-23-8S.

• Supply Seed-Safe Potassium And Sulfur
  Provides potassium and sulfur in a seed-safe, plant-available form at germination to meet early crop nutrient needs.
• Support Early Plant Nutrient Uptake
  In-furrow application places potassium and sulfur where crops can access them early, supporting uptake during germination and helping protect young seedlings from environmental risks.
• Support Early-Season Planting
  Its low salt-out temperature is suited to early-season planting conditions.
• Blend With UAN And Ammonium Polyphosphate
  Compatibility with UAN and ammonium polyphosphate solutions, including 10-34-0 and 11-37-0, lets growers incorporate K-Row 23 into liquid fertilizer blends.
• Apply Using Multiple Methods
  Growers can choose from multiple application methods for K-Row 23.
• Increase Crop Nutrient Exposure
  The product enables greater exposure to nutrients than other fertilizers or supplements, according to the product information.
• Deliver 23-8S Fertilizer Analysis
  The 0-0-23-8S analysis identifies the product's potassium and sulfur content.

P-Sure

P-Sure is a liquid nitrogen and phosphorus fertilizer available in Mexico.

• Supply Nitrogen And Phosphorus
  Provides nitrogen and phosphorus in liquid fertilizer form.

SoluPotasse

SoluPotasse is a water-soluble sulfate of potash fertilizer supplying potassium and sulfur in sulfate form. It contains 51.5% potash (K2O w/w) and 18.7% sulfur (S w/w) and can be used for fertigation across a wide variety of crops. It dissolves rapidly and completely without leaving residues, and can be applied through drip, micro-sprinkler, sprinkler, flood irrigation, or pivot systems. Its lower-pH solution supports phosphorus, iron, and other micronutrient availability and helps prevent dripper clogging. SoluPotasse has a low salt index, virtually no chloride, and no nitrates. It can be blended with most fertilizers, except those containing calcium.

• Supply Soluble Potassium And Sulfur
  The fertilizer supplies potassium and sulfur in sulfate form, with 51.5% potash (K2O w/w) and 18.7% sulfur (S w/w).
• Dissolve Quickly And Completely
  Rapid, complete dissolution provides a water-soluble fertilizer for use in fertigation without leaving residues.
• Apply Through Multiple Irrigation Systems
  Growers can apply SoluPotasse through drip, micro-sprinkler, sprinkler, flood irrigation, or pivot systems.
• Improve Nutrient Availability
  SoluPotasse's lower-pH solution improves the availability to plants of phosphorus, iron, and most other micronutrients.
• Leave No Dissolution Residues
  The product dissolves completely without leaving residues.
• Help Prevent Dripper Clogging
  The lower-pH solution helps prevent drippers from clogging during irrigation.
• Provide A Low Salt Index
  Its low salt index is a stated product characteristic.
• Increase Resistance To Transport Damage
  The product is described as increasing crops’ resistance to damage during transport and storage.
• Boost Crop Stress Resistance
  SoluPotasse helps boost crops’ resistance to stress.
• Avoid Chloride And Nitrate Inputs
  The product contains virtually no chloride and is free of nitrates.
• Blend With Most Other Fertilizers
  SoluPotasse can be blended with most other fertilizers, with the exception of fertilizers containing calcium.

GranuPotasse

GranuPotasse is a high-grade granular sulfate of potash fertilizer containing 50% potash (K2O w/w) and 18% sulfur (S w/w). It is suitable for direct soil application or bulk blending with other fertilizers to create NPK formulas tailored to crop needs and local soil conditions. Its free-flowing, dust-free granules, extremely low salt index, and performance in alkaline or acidic soils make it suitable for a wide variety of crops.

• Supply Potassium And Sulfur
  Delivers potassium and sulfur in one granular fertilizer for use across a wide variety of crops.
• Create Tailored NPK Formulas
  Supports bulk blending with other fertilizer components to produce NPK formulas suited to specific crops and local soil conditions.
• Apply Directly To Soil
  Offers the option to apply the granular fertilizer directly to soil, as well as use it in fertilizer blends.
• Handle Free-Flowing, Dust-Free Granules
  Its robust granules are free-flowing and dust-free.
• Use An Extremely Low Salt Index
  Provides an extremely low salt index, as stated in the product benefits.
• Perform In Alkaline Or Acidic Soils
  Is described as providing equal performance in both alkaline and acidic soil conditions.
• Boost Crop Stress Resistance
  Helps boost crop resistance to stress.
• Reduce Crop Damage During Transport And Storage
  Increases crops' resistance to damage during transport and storage.
• Avoid Chloride And Nitrates
  The product is virtually chloride-free and contains no nitrates, according to its listed benefits.

K-Leaf

K-Leaf is a concentrated potassium booster developed for foliar application on broad-acre crops, fruit, and vegetables. It contains 52% potash (K₂O w/w) and 18.8% sulfur (S w/w), and can be applied at higher doses than certain other foliar potassium fertilizers. Designed for complementary foliar sprays during periods of peak crop potassium demand, it helps growers produce high-quality crops with maximum export value. K-Leaf is not available in the United States.

• Supply Concentrated Potash And Sulfur
  Provides a concentrated source of potash and sulfur for foliar application.
• Apply Potassium To Broad Crop Groups
  Enables foliar potassium application across broad-acre crops, fruit, and vegetables, with the option of higher doses than certain other foliar potassium fertilizers.
• Target Potassium During Peak Demand
  Supports growers applying complementary foliar sprays during periods of high crop potassium demand.
• Treat Potassium Deficiency Rapidly
  Helps growers respond rapidly to cases of potassium deficiency in crops.
• Improve Crop Yield
  Supports improved crop yields as part of foliar potassium nutrition.
• Improve Crop Quality
  Helps growers produce higher-quality crops.
• Boost Crop Stress Resistance
  Helps crops improve their resistance to stress.
• Blend With Compatible Foliar Products
  Can be used with a wide range of foliar fertilizers and crop protection products, except those containing calcium.
• Dissolve Rapidly Without Residue
  Dissolves more rapidly than other potassium-based fertilizers and leaves no residue.
• Reduce Spray Nozzle Clogging Risk
  The lower-pH solution helps reduce the risk of spray nozzle clogging.
• Avoid Nitrates And Nearly All Chloride
  Provides a formulation that is free of nitrates and contains virtually no chloride.
• Reduce Crop Damage During Transport
  Helps increase crop resistance to damage during transport.
• Reduce Crop Damage During Storage
  Helps increase crop resistance to damage during storage.

Industrial fabrication

Tessenderlo Kerley provides industrial fabrication and welding services from its Carlsbad, New Mexico facility, serving internal operations and third-party clients since 1982. Its work includes ASME code vessels and API tanks, piping systems, modular skids, structural steel assemblies, and electrical and instrument panels. The facility spans more than 30,000 square feet on a 21-acre site and has two 10-ton overhead cranes. In-house design and drafting professionals, mechanical and chemical engineers, and certified welding inspectors support projects from concept through completion and installation. The facility holds ASME U and S certification and the National Board R symbol stamp for repairs and alterations.

• Build To Project Requirements
  Customers can request tailored fabrication across a range of equipment and structures, including pressure vessels, piping, skids, steel assemblies, and panels.
• Meet Applicable Code Requirements
  Customers can obtain fabrication, repair, and alteration work performed under the applicable codes and standards identified for the facility.
• Support Projects From Concept
  Customers can access design capabilities and engineering support for project planning, material selection, and fabrication.
• Verify Welding Quality
  Certified inspection supports adherence to client specifications and the facility's stated welding and quality standards.
• Carry Projects Through Installation
  Customers can receive coordinated support from design consultation through fabrication and final installation.
• Choose From Multiple Welding Processes
  A range of stated welding processes supports fabrication work across different materials, project requirements, and industry standards.
• Repair And Modify Equipment
  Customers can use the facility for ASME equipment repairs and modifications, including work covered by its R symbol stamp.
• Handle Complex Fabrication Projects
  The facility's shop space and overhead cranes support fabrication projects described by the company as spanning virtually any size and complexity.
• Design And Install Modular Skids
  Customers can access modular skid design, assembly, and installation as part of the fabrication service.

Sulfur recovery and processing services

Tessenderlo Kerley operates sulfur recovery plants at locations throughout the United States and partners with refineries to recover sulfur and process sulfur-containing gas streams. Combined Claus and tail gas units can achieve up to 99.9% sulfur recovery. The company upgrades off-gases into value-added products and provides emission control for sulfuric acid plants, smelters, power plants, and mercaptan processing plants. Its integrated operations span recovery and processing through manufacturing, distribution, and customer support, guided by safety, reliability, and operational excellence.

• Recover Up To 99.9% Of Sulfur
  The recovery technology can achieve up to 99.9% recovery from combined Claus and tail gas units, helping convert sulfur-containing streams into recovered sulfur.
• Operate Efficient, Cost-Competitive Recovery Plants
  Customers can work with an experienced operator of sulfur recovery plants across the United States. The company describes its plants as efficient and cost competitive.
• Upgrade Off-Gases Into Value-Added Products
  Processing sulfur-containing gas streams and upgrading off-gases turns these streams into value-added products. The company reports providing this service at two Phillips 66 refinery locations through Jupiter Sulphur.
• Connect Recovery With Manufacturing And Distribution
  Customers can access an integrated operation spanning recovery and processing through manufacturing, distribution, and customer support, with recovered sulfur transformed into products serving agriculture, industry, and communities.
• Maintain High Uptime And Lower Maintenance Costs
  The company reports refinery operations with uptime run rates that far surpass industry standards and maintenance costs well below those commonly reported in the industry.
• Control Emissions Across Industrial Facilities
  Emission control is available for sulfuric acid plants, smelters, power plants, and mercaptan processing plants.
• Guide Operations With Safety And Reliability
  Safety, reliability, and operational excellence guide the company's recovery, processing, manufacturing, and supply chain activities. Its Burley and Hanford facilities have earned OSHA VPP STAR designation.