Agricultural Engineering/Agronomy, Central Iowa, and BioCentury Research Farms

Corn Grain Yield and Potassium Uptake and Recycling as affected by Rootworm Resistance and Potassium Fertilization

Authors: Carlos Xavier Villavicencio (Iowa State University) , Antonio P. Mallarino (Iowa State University) , Matthew William Clover (Iowa State University)

Abstract

New corn hybrids increase yield and may change potassium (K) uptake or fertilization needs through improved traits that increase yield and root efficiency. Hybrids, soil conditions, and rainfall may affect the rate at which K in cornstalks is released to the soil and becomes available to plant uptake. Therefore, a study was conducted from 2006 through 2009 at the Agronomy and Agricultural Engineering Research Farm to evaluate the effects of K fertilization and rootworm resistance on grain yield, K uptake, and K recycling with residue.

Keywords: RFR A10120, Agronomy

How to Cite: Villavicencio, C. X. , Mallarino, A. P. & Clover, M. W. (2011) “Corn Grain Yield and Potassium Uptake and Recycling as affected by Rootworm Resistance and Potassium Fertilization”, Iowa State University Research and Demonstration Farms Progress Reports. 2010(1).