Results of the Iowa Com Yield Test are published to aid Iowa farmers in selecting com hybrids. This is the seventy-first consecutive year for the test. The presentation of data for the hybrids tested does not imply approval or endorsement by the authors or by the agencies sponsoring or conducting the test. Entries in tables 1 and 2 are designated by brand name and variety.
Iowa State University
Ziegler, K.E.; Vinson, W.H.; and Carroll, D.E., "The 1990 Iowa Corn Yield Test Report, District 7" (1990). Iowa Corn Yield Tests. 135.