Be Prepared for Any Season​

Expertise, research and industry conversations in one place.

Changing crop management habits is no easy task. You need expertise to understand what’s possible; research to demonstrate what’s realistic; and trusted news and information to understand what’s reasonable. It’s all here in one place, so you can spend more time getting serious about soybeans.


From land grant university field trials to our own field trial program, these results prove that traditional soybean nutrient management programs have underestimated the potential of soybeans for too long. With the proper nutrient plan, including increased sulfur and nitrogen availability, high-yielding soybeans can be a profitable option year after year. See for yourself.


Sulf-N® ammonium sulfate fits the 4R nutrient stewardship approach for sulfur and nitrogen fertilization of high yield-potential soybeans.

Right Rate

With clean air regulations, total atmospheric sulfur depositions have declined from 20 lb S/acre to almost 0, but a 75 bu/acre crop needs ~15 lb S/acre. This is a critical gap in many soils. In comparison, 20-25 lb N/acre is all that is needed to boost early growth and/or to complement soil nitrogen and biological nitrogen during reproductive stages.

Right Time

Soybeans can benefit from sulfur and nitrogen applied within 2-3 weeks of planting. Sulfur is essential for biological nitrogen fixation, and nitrogen can boost early growth while nodulation establishes.

Soybeans may benefit from nitrogen and sulfur applied at bloom or shortly after – soil nitrogen plus biologically fixed nitrogen may not be enough to grow 75+ bu/acre. Additionally, 50% of the nitrogen and sulfur is taken up after flowering.

Right Place

A 100% sulfate-sulfur source can be applied as a granule on the soil surface and after the first rain will be immediately available for root uptake. A nitrogen source that resists volatilization loss, such as AMS, may be broadcast- applied over previous crop residue or over the soybean field.

Right Source

Sulf-N:registered: ammonium sulfate resists nitrogen loss and provides immediately available sulfur.

Soybean field studies have shown AMS responses of up to 13 bu/acre.

There is no need to incorporate into the soil; it will solubilize and become available to roots with the first rain or with watering.

AMS has proven to be 2X more efficient than fertilizer applications composed of 50% of sulfur in the elemental form.

Let’s Talk About Soybean Nutrition

Everything you need to know about soybean nutrition and more.

Video: AdvanSix Sulfer Fertilization on Soybeans

Dr. Shaun Casteel, Associate Professor of Agronomy and Soybean Extension Specialist at Purdue University, highlights results from his field research on soybean fertilization.  He shares his 4R nutrient stewardship approach to sulfur fertilization for improved production and profitability.

Video: In Season Soybean Fertilization

Dean Collamer, agronomist with Growmark FS, discusses the importance of in-season soybean fertilization and how nitrogen and sulfur are critical to soybean health and development.

White Paper: Sulf-N® Ammonium Sulfate Outperforms Elemental Sulfur Formulations in Soybean Field Trials

In field trials conducted by Purdue University in 2016 and 2017 and recently reported in Communications in Soil Science and Plant Analysis, Sulf-N® ammonium sulfate was twice as efficient as two other commercial sulfur (S) formulations containing the same total S, but with half of it in the form of elemental S.

White Paper: Modern Soybeans Require More S and N

Purposeful nutrition management and timely planting can pay off in yield. Increasingly, soybeans are becoming more than just something to rotate with corn. Savvy growers are learning that high-yielding soybean varieties, if managed intentionally, will pay off the extra effort in yield.

Brochure: Maximize Profit Opportunities in Soybeans

Soybeans are more than just a crop to rotate with corn. Well managed, high-yielding varieties also provide opportunities to increase your profits. To achieve the full genetic potential of these varieties, good fertility is critical.

Presentation: Nutrient Management for High Yield Soybeans

Soybeans are more than just a crop to rotate with corn. Well managed, high-yielding varieties also provide opportunities to increase your profits. To achieve the full genetic potential of these varieties, good fertility is critical.

2022 Harvest Report: We’re advancing soybeans together

Soybeans are now a primary revenue source requiring more sophisticated management and agronomic strategies to achieve new heights. And AMS is playing a big part in that effort.

2021 Harvest Report: Get Serious About Soybeans

Soybeans are no longer just a rotational crop for corn. So, it’s time to get serious about soybean nutrition management to maximize growers’ ROI.


Our quarterly newsletter will help you stay up to date on all the latest trends and research in crop nutrition. Read the latest articles below.

2 men standing in a field


Ammonium sulfate (21-0-0-24S) fertilizer delivers pound for pound the most readily available nitrogen and sulfur to the crop, and its high-density form makes it an efficient and versatile fertilizer that consistently delivers ROI by improving plant health and increasing yield.


At AdvanSix, we know you’re here because you are serious about soybeans. And that means you need serious answers to your questions. Take a look at our frequently asked questions to learn more about how to incorporate high-yielding soybeans into your operation. If questions still remain, contact us any time.

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