Ammonium Sulfate | Ask the Agronomist | AdvanSix Ammonium Sulfate

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AdvanSix’s agronomy experts are available to answer your questions about how to get the most out of your ammonium sulfate investment. Mercedes Gearhart has overseen agronomic research at AdvanSix for more than 20 years, and has a wealth of knowledge about fertilizer use efficiency and improving crop yields.

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Oct 26, 2018
What is the recommended timing for using ammonium sulfate as a starter fertilizer on soybeans?
The typical recommendation would be prior to planting. Nevertheless, if weather conditions prevent your from spreading it pre-planting, you may also apply it post-planting. Purdue university work has shown yield...
Jun 27, 2018
Does soluble grade ammonium sulfate change the pH of the solution water?
Yes. When dissolving incremental amounts of ammonium sulfate (AMS) up to 17 pounds per 100 gallons (covering typical AMS recommended rates as herbicide adjuvant) water pH went gradually down from 7.67 to...
Nov 29, 2017
What is the best time to apply sulfur?
It depends on the crop in question as well as the form of sulfur used. While small grains need sulfur early in the season to promote tiller formation, in the case of canola sulfur is more critical at the time of...
Oct 20, 2017
Would you have any concerns about blending pelletized calcitic lime together with granular MAP and ammonium sulfate?
While the blended product should not have any issues during storage, it could face problems once applied to the soil, due to potential ammonia volatilization (from the ammonium-N in both MAP and ammonium sulfate), as...
Sep 18, 2017
What is a safe rate of ammonium sulfate applied with the drill on wheat?
It will depend mainly on soil texture and whether it is applied straight or in a blend. A 50 pound per acre rate of straight ammonium sulfate would be safe to apply next to the seed across soils, yet you could double...
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