Abstract
Historically, sulfur (S) deficiency has not been an issue for crop production in Iowa. Previous research reported sufficient plant available S for crop production on most soil associations. Recent studies across Iowa in corn and soybean production were consistent with results of previous research. The exception was a longstanding suggestion to apply S as commercial fertilizer or livestock manure for alfalfa production on sandy soils. However, over the past decade, alfalfa grown on some silt loam and loam soils in northeast Iowa has exhibited a slowly worsening problem with areas in fields of stunted growth and poor coloration. Recent investigations determined the growth problems were largely due to S deficiency.
Keywords: Agronomy
How to Cite:
Lang, B. J., Sawyer, J. E. & Barnhart, S. K., (2007) “Sulfur Deficiency in Northeast Iowa Alfalfa Production”, Iowa State University Research and Demonstration Farms Progress Reports 2006(1).
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