Our scientific research in optimizing crop yields is a product of our longevity — more than 100 years of success in the forest products industry. Originally used in 1998, our fertilizer technology Arborite® has been used on millions of acres of forestland since and is now available to farmers and growers in the United States and Mexico.

Nitrogen is essential to maximize growth. In most plants, when nitrogen is limited, it’s considered the greatest deterrent to plant growth. By reducing volatility between fertilizer and soil, more nitrogen can remain in the soil for a longer period of time. This can help improve economic yield and reduce nitrogen costs.

Arborite has grown into a family of coated granular and suspension fertilizer products specially formulated for both agriculture and forestry.

Watch this video to see how we partnered with the National Science Foundation using our Arborite® fertilizer
in a study of the long-term effects of nitrogen on the ecosystem.


Urea granules and urea nitrate solutions (UAN) are the most readily available and generally most cost effective sources of nitrogen. But after most are applied, micro-organisms in the soil produce an enzyme that cause them to release nitrogen as ammonia gas. This loss is greatest within two to four days of application, even faster in high pH soils.

Arborite AG uses a unique, patented NBPT-dissolving system to either coat urea granules or mix with UAN to help inhibit the conversion of urea to ammonia. It’s easy to use and can be applied to granular urea, or mixed with UAN, without special equipment. The end result is reduced volatility and slowed nitrogen loss while waiting for adequate rain or irrigation. Arborite AG can:

  • Help retain more nitrogen in the soil for longer periods.
  • Be used with many crops and soils.
  • Provide no-till farmers with greater flexibility for nitrogen management.
  • Improve cost-efficiency when used with tillage systems that require surface-applied nitrogen.

Arborite AG fertilizer technology brochure.jpg


Western United States

Steve Farner
Sales Manager, RegionMicroSource, a division of Gavilon Fertilizer, LLC
(877) 601-6530

Northern and Midwest United States

Larry Grote
Sales Manager, RegionMicroSource, a division of Gavilon Fertilizer, LLC
(308) 325-2442

Eastern and Southeast United States

Alan Robinette
Sales Manager, MicroSource, a division of Gavilon Fertilizer, LLC
(334) 733-0388

All Other Sales

Leigh Hamric
Product Manager, Gavilon Fertilizer, LLC
(843) 292-0361


Traditionally, forest fertilization has been done using uncoated urea and diammonium phosphate (DAP) as a split application or bulk blend. But split applications require two passes which can increase costs. Bulk blends can result in non-uniform application due to the differences in density of urea and DAP.

Arborite CUF (coated urea fertilizers) uses a patented binding system to prepare urea products with water soluable boron and phosphate as a single granule. Other nutrients can be added to supply a broader spectrum of nutrients, all in a single granule. Arborite CUF EC (extra control) provides the same multi-nutrient single granule, but with even more control for nitrogen loss due to environmental conditions like temperature, moisture and humidity.

arborite CUF EC brochure.jpg



Dick Lind
Gavilon Fertilizer, LLC
(800) 748-8630

North Carolina

Joe Barker
EnCee Chemical
(800) 334-2663


Jean Provence
Provence Lime and Fertilizer Co.
(580) 286-3420


For more information, please review the studies above or contact one of the listed representatives. To contact Weyerhaeuser, submit the form below.

Captcha Code

Any personal information you provide is subject to the terms of our Privacy PolicyCalifornia residents: Our California Consumer Privacy Act Notice details what personal information we collect and for what purposes.