Why is early-season nitrogen fertilization not a common practice on soybeans? | 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. Check out the questions asked below or ask your own question.

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Why is early-season nitrogen fertilization not a common practice on soybeans?
The concern is that nitrogen applied during vegetative stages in soybeans may prevent symbiotic nitrogen fixation from fully developing. Pre-plant and late-season ammonium sulfate fertilization, on the other hand, may be beneficial by promoting and supplementing, respectively, symbiotic fixation.

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