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Why Ammonium Sulfate?

On field after field, Sulf-N® ammonium sulfate fertilizers have proven to be an excellent source of the readily-available sulfate sulfur and stable ammonium nitrogen crops crave. Unlike elemental sulfur, the sulfate sulfur in Sulf-N® is readily available to crop roots, providing them with access to the essential nutrient they need upon application. The ammonium nitrogen in Sulf-N® is also immediately available for root uptake, and resists nitrogen losses from leaching, volatilization and denitrification.

Sulf-N^® ammonium sulfate fertilizer provides two essential nutrients your crops need: ammonium sulfate and sulfate sulfur. It also provides the cost-efficiency you require. As a high-analysis fertilizer offering, it packs 900 pounds of total plant food per ton, making more efficient use of your fertilizer bins. Ammonium sulfate offers many other agronomic advantages over other fertilizer technologies:

• Lower susceptibility to nitrogen loss from leaching, volatilization and denitrification.
• Higher nutrient efficiency
• Contains sulfur that is readily available to plants

Click through the interactive chart below to see how Sulf-N^® ammonium sulfate stacks up against other fertilizers:

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	Granular Ammonium Sulfate	Granular Elemental Sulfur	Powdered Gypsum	Pelletized Gypsum	Common Sulfur Enriched Phosphates
Total Sulfur (%)	24	90	17 – 18	17 – 18	10 – 15
Sulfate Sulfur (%)	24	0	17 – 18	17 – 18	5 – 7.5
Elemental Sulfur (%)	0	90	0	0	5 – 7.5
Highly Water Soluble	more	more	more	more	more
Highly Readily Available Sulfate Sulfur	more	more	more	more	more
Easy Handling	more		more
Blendable with Urea	more		more

To learn more, download our product guide or contact us for technical and sales support.

In addition to providing nutrition with readily-available sulfate sulfur and ammonium nitrogen to your crops, Sulf-N^® ammonium sulfate fertilizer assists plants with the uptake of other critical nutrients. In many soils, high soil pH decreases the solubility of phosphorus and critical micronutrients, impeding root uptake. When ammonium is absorbed by the crops, it acidifies their root zones, often unlocking phosphorus and key micronutrients such as zinc, boron, iron, copper and manganese from fertilizers and soil. This benefit, combined with the benefits of sulfate sulfur (24 percent) and ammonium nitrogen (21 percent) naturally found in Sulf-N^® ammonium sulfate, can help improve overall crop nutrition and yield.

To learn more, download our product guide or contact us for technical and sales support.

Sulf-N^® fertilizers contain sulfate sulfur, which is the only kind of sulfur plant roots can take up. Many sulfur products only supply elemental sulfur, or a combination of elemental and sulfate sulfur, with the elemental sulfur not becoming available to crop roots until converted to sulfate. Once in the soil, this conversion can take anywhere from 90 days to several months, which leaves crops hungry for sulfur at critical growth stages. There is no waiting period with Sulf-N^® ammonium sulfate, as it contains 100 percent pure sulfate sulfur nutrition.

To learn more, download our product guide or contact us for technical and sales support.

Nitrogen enhances yield more than any other fertilizer nutrient, and 21 percent of Sulf-N^® ammonium sulfate is in fact nitrogen in the highly-efficient ammonium form. Sulf-N^® is immediately available for root uptake, and can even be applied to the soil surface under reduced tillage conditions while resisting the three major causes of nitrogen loss:

• Less leachable: Positively charged ammonium ions bind to negatively charged soil ions, making Sulf-N^® ammonium sulfate less susceptible to leaching
• Resists volatilization: Sulf-N^® ammonium sulfate does not need to be incorporated to minimize volatilization loss in most soils types
• Immune to denitrification: The denitrification process that can cause nitrate loss in poorly-drained soils does not affect the availability of the ammonium in Sulf-N^®

To learn more, download our product guide or contact us for technical and sales support.

As one of the world’s largest producers of ammonium sulfate and a leader in agronomic research, Advansix offers the trusted products and technical expertise you need. Our experienced team of fertilizer professionals is available to answer your questions and help you integrate ammonium sulfate into your cropping system.

To learn more about how you can benefit from using Sulf-N^® ammonium sulfate fertilizer on your crops, contact us for technical and sales support.