Start Date: 2008
Principal Investigator: Jeffrey Strock
Organization: University of Minnesota, Southern Research and Outreach Center
Nitrogen fertilizer is routinely used in Minnesota because of its positive effects on crop yield. Sulfur and nitrogen are closely associated in protein synthesis; thus, when sulfur becomes limiting, additions of nitrogen do not increase yield or protein level in plants. Some producers in southwest Minnesota have reported that sulfur deficiencies have become more common in recent years, especially in high-yield environments. Current University of Minnesota guidelines indicate that the addition of sulfur should be considered when corn is grown on coarse-textured, sandy soils. Research data has not established a consistent, predictable yield response to sulfur in non-sandy or medium to high organic matter soils.
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