McNay Memorial Research and Demonstration Farm

Long-Term Potassium Fertilization Effects on Yield of Corn and Soybean in South Central Iowa

Authors: Antonio Mallarino (Iowa State University) , Ryan R. Oltmans (Iowa State University) , Nicholas Piekema (Iowa State University)

  • Long-Term Potassium Fertilization Effects on Yield of Corn and Soybean in South Central Iowa

    McNay Memorial Research and Demonstration Farm

    Long-Term Potassium Fertilization Effects on Yield of Corn and Soybean in South Central Iowa

    Authors: , ,

Abstract

Extensive research has been conducted in Iowa to study the potassium (K) fertilization of corn and soybean, but not in south-central Iowa soils. Soil K deficiency decreases crop yield and economic benefits to growers. Also, research in other locations has shown that a K deficiency can reduce the capacity of corn to respond to nitrogen (N) and can increase the incidence of some soybean diseases. Therefore, a long-term K response study was initiated in 2009 at the McNay Research and Demonstration Farm to study corn and soybean response to K fertilizer.

How to Cite:

Mallarino, A. & Oltmans, R. R. & Piekema, N., (2017) “Long-Term Potassium Fertilization Effects on Yield of Corn and Soybean in South Central Iowa”, Iowa State University Research and Demonstration Farms Progress Reports 2016(1).

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Published on
01 Jan 2017
Peer Reviewed