Sulfur has officially joined the conversation when producers are discussing which macronutrients need to be applied to corn and soybean acres to meet plant demand and support optimal growth. Historically, nitrogen, phosphorus and potassium were the only nutrients required in quantities large enough to justify supplemental applications because Illinois soils were typically able to supply the other major macronutrients, such as calcium and magnesium. Sulfur, while essential for plant growth, is only just becoming a common addition to fertilizer management plans, and the shift to sulfur is no coincidence.
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Understand economics of soy, sulfur
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Sulfur, while essential for plant growth, is only recently becoming a common addition to fertilizer-management plans.
Soybeans in October 2025 were $10 per bushel, ammonium thiosulfate was priced at $320 per ton and the estimated cost of the sprayer application was $6.50 per acre.
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