An agronomist says they’re seeing more cases of sulfur deficiency in soybeans.

Mercedes Gearhart, at AdvanSix Plant Nutrients, tells Brownfield the Clean Air act has been a factor…

“We’ve seen more and more cases of sulfur deficiency showing up, in part because we’ve cleaned the air.” She says “With the acid rain they were getting free sulfur. We are seeing responses to sulfur fertilization even in in heavier soils, high organic matter, so things have changed.”

She says most sulfur applications are made in the fall, but soybeans need it in the spring…

“That means you need to get sulfur somehow some way and ammonium sulphate has the ability to provide that sulfur immediately available for the roots to take it up and for nodulation to take place,” she says.

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