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Bulletin P

Abstract

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.

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.

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.

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