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. Check out the questions asked below or ask your own question.

My soybeans are six to eight inches tall. Would it be okay to topdress them with 100 pounds per acre of ammonium sulfate?


While ammonium sulfate fertilization is often recommended pre-plant on low organic matter soils and, more recently, also late-season (R3) on high-yield potential soybeans, early-season nitrogen fertilization is normally only recommended in cases of poor nodulation.

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