BORATES in Agriculture

Feeding a Hungry Planet

Our world’s population is growing rapidly—yet the amount of arable land is not.

A changing climate. Soil contamination and depletion. Crop demands. All threaten the ability of today’s farmers to maintain a sufficient global food supply.

U.S. Borax is doing our part to combat global hunger by helping farmers efficiently grow abundant, healthy crops. How? By providing a clean, reliable source of boron, a micronutrient that plants—and people—need to thrive.

Learn more about refined boron's application in agriculture.

Agricultural resources

Boron Quality Matters

Boron is a naturally occurring mineral. But it needs to be properly refined to provide the best value.

  • 20 Mule Team® Borax refined boron mixes uniformly with other materials and dissolves more completely in liquid—and the soil

  • Our refined boron is more consistent in quality and size, making it perfect for mixing in NPK fertilizer and enabling farmers to do more with less.

  • Our refined borates are purer and cleaner than raw minerals, reducing contaminants such as arsenic, a heavy metal.

  • Our refined boron is crush-resistant and low-dust, making it cleaner and easier to handle and transport.

Boron for crops

Better Crops from the Ground Up

We understand the causes, consequences, and cures of boron deficiency in crops.

  • Our extensive crop guides  help to identify boron deficiency and provide detailed information about solutions and applications.

  • Our ROI calculator helps farmers determine the exact value they’ll see from using high-quality refined boron instead of cheaper but less effective alternatives.

  • We produce a variety of refined borates so that farmers and fertilizer manufacturers can achieve optimal results, whatever the application method.

  • 20 Mule Team Borax refined boron is certified and approved for use in organic farming.

Boron for better crops

Pioneering Research

Our 150-year history is one of innovation and research—and we’re happy to share the results.

  • We share decades of expert knowledge and scientific studies with agronomists to support farmers and improve agricultural practices.

  • We provide a wealth of expert support to our customers through both advisory and hands-on services, including region-specific guidance.

  • We support agricultural learning opportunities through industry events and continued research.

  • We’ve developed an extensive and effective refinement process, resulting in products that offer excellent value and optimal results.

Agricultural Products


Fertibor is the optimum product for suspension in liquid fertilizers and offers easy handling, superior flow, and consistency. Learn More

Granubor 2

Granubor 2 is engineered to meet crops’ boron demands when they need it most—during the growing season. Learn More


The best choice for foliar fertilizer applications, Solubor is formulated to disperse quickly in liquid, leaves minimal residue, and provides an economical source of boron. Learn More


U.S. Borax crop guide
Our crop guide can help you identify and treat boron deficiencies in specific crops. Learn More
The value of refined boron
Get a snapshot of boron’s importance to plant health and how refined boron can help improve crop yield. Learn More
Refined boron vs. raw mineral borates
What is the difference between raw and refined boron sources—and in the end products and their effect on your crops? The answers might surprise you. Watch video

U.S. Borax, part of Rio Tinto, is a global leader in the supply and science of borates—naturally-occurring minerals containing boron and other elements. We are 1,000 people serving 500 customers with more than 1,700 delivery locations globally. We supply 30% of the world’s need for refined borates from our world-class mine in Boron, California, about 100 miles east of Los Angeles.  Learn more about Rio Tinto

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