Northwest and Allee Research and Demonstration Farms

Effect of Controlled-Release N Fertilizer on Corn Grain Yield

Authors: Randy Killorn (Iowa State University) , Marianela Gonzalez (Iowa State University) , Jeffrey Moore (Iowa State University) , David Haden (Iowa State University)

  • Effect of Controlled-Release N Fertilizer on Corn Grain Yield

    Northwest and Allee Research and Demonstration Farms

    Effect of Controlled-Release N Fertilizer on Corn Grain Yield

    Authors: , , ,

Abstract

We are continuing to look for technology that will enable us to manage nitrogen (N) fertilizer efficiently. Past research has studied the effect of nitrification inhibitors, sulfur coating, and time of application on N-use efficiency. Recently a controlled-release polymer-coated urea material (ESN) has become available. Evaluation of the material in terms of efficiency of use on corn is necessary to help crop producers decide if the extra cost of ESN can be recovered either by applying less material or by producing higher yields at current N rates. The objective of this study is to evaluate the effect of spring applications of ESN and urea on a corn-soybean cropping system.

Keywords: Agronomy

How to Cite:

Killorn, R. & Gonzalez, M. & Moore, J. & Haden, D., (2006) “Effect of Controlled-Release N Fertilizer on Corn Grain Yield”, Iowa State University Research and Demonstration Farms Progress Reports 2005(1).

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Published on
01 Jan 2006
Peer Reviewed