Southeast Research and Demonstration Farm

On-Farm Sulfur Fertilization of Alfalfa and Corn Demonstration Trials

Authors: John Sawyer (Iowa State University) , Brandon Zwiefel (Iowa State University) , Tyler Mitchell (Iowa State University) , Cody Schneider (Iowa State University) , Chris Beedle (Iowa State University) , Jim Fawcett (Iowa State University)

Abstract

In the recent past, sulfur (S) deficiency showed up more frequently in Iowa fields. Large yield response occurred in corn and alfalfa fields, especially in northeast Iowa. The increase in S response is thought to be partially due to Iowa receiving less S in rainfall because of more stringent air pollution regulations, less S fertilizer applications, higher crop yields, and less widespread use of manure. Sulfur fertilizer applications can offer yield increases where S deficiencies are present. The objective of these trials was to evaluate potential for S deficiency and yield response in corn and alfalfa to S applications.

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How to Cite: Sawyer, J. , Zwiefel, B. , Mitchell, T. , Schneider, C. , Beedle, C. & Fawcett, J. (2019) “On-Farm Sulfur Fertilization of Alfalfa and Corn Demonstration Trials”, Iowa State University Research and Demonstration Farms Progress Reports. 2018(1).