The 1964 Iowa corn yield test

Abstract

<p>The results of the Iowa Corn Yield Test are published as an aid to Iowa farmers in selecting corn hybrids adapted to their farms. This is the forty-fifth consecutive year for the Iowa Corn Yield Test since its beginning in 1920 and the fifth consecutive year in which a picker-sheller has been used to harvest a majority of the test fields.</p> <p>Two-year averages are presented in tables 1-6 for both high and normal plant populations for each district. This is the second year of the district arrangement shown in fig. 1 and the second year in which all hybrids are compared at both high and normal plant populations at each location.</p> <p>The presentation of data on the hybrids tested does not imply approval or endorsement by the authors or by the agencies sponsoring or conducting the test.</p>