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.

Don’t crops get plenty of sulfur from smokestack emissions?


Years ago, crops received a good dose of sulfur from electric utilities that released sulfur dioxide through their smokestacks. However, clean air regulations have sharply reduced sulfur dioxide emissions, and as a result, crops are not getting as much “free” sulfur from the air.  Accordingly, agronomists are seeing more cases of sulfur deficiency in areas that were traditionally considered non-responsive to sulfur.

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