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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. Check out the questions asked below or ask your own question.
How volatile is ammonium sulfate on dry, bare ground? I want to broadcast 200 pounds per acre ahead of planting wheat on dry land. Will it last a couple of weeks without rain?
Ammonium sulfate is virtually non-volatile as long as we are referring to non-calcareous soils. Accordingly, ammonium sulfate is recommended over urea or urea-containing products (such as urea ammonium nitrate solutions) whenever broadcast applications are not followed by incorporation, such as the case you describe. This is especially true in the case of coarse and low organic matter soils (low cation exchange capacity).