Western Research and Demonstration Farm
Corn hybrid genetics change yearly to increase productivity. The newer hybrids appear to possess plant characteristic that allow for higher plant populations. Over the past several years, field trials across the state have found support for higher plant populations in corn. This trial was designed to collect information to aid in local recommendations.
Iowa State University
Licht, Mark A., "Corn Plant Populations, 2007 through 2010" (2011). Iowa State Research Farm Progress Reports. 294.