Southeast Research and Demonstration Farm

Potassium Uptake and Recycling to the Soil in Corn and Soybean

Authors: Antonio P. Mallarino (Iowa State University) , Ryan R. Oltmans (Iowa State University) , Myron C. Rees (Iowa State university) , Kevin Van Dee (Iowa State University)

  • Potassium Uptake and Recycling to the Soil in Corn and Soybean

    Southeast Research and Demonstration Farm

    Potassium Uptake and Recycling to the Soil in Corn and Soybean

    Authors: , , ,

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Abstract

Considerable research has been conducted at this farm to study potassium (K) fertilization rates and placement methods on corn and soybean grain yield, K uptake, and soil-test K values. However, no research has investigated K recycling to the soil by maturing plants and crop residue until the next crop is planted. The amount and the timing of the K recycled to the soil should have a significant impact on soil-test K values, and could explain a great deal of usually very high soil-test K temporal variability. Therefore, plots of several field K trials at this farm were used to investigate these issues.

Keywords: Agronomy

How to Cite:

Mallarino, A. P., Oltmans, R. R., Rees, M. C. & Van Dee, K., (2013) “Potassium Uptake and Recycling to the Soil in Corn and Soybean”, Iowa State University Research and Demonstration Farms Progress Reports 2012(1).

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Published on
2013-01-01

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