Results of the Iowa Crop Performance Test-Corn are published to aid Iowa farmers in selecting corn hybrids. This is the 84th consecutive year for the test. These data are first released on the Iowa Crop Improvement Association's homepage at http://www.agron.iastate.edu/icia! usually around the end of November.
Iowa State University
Ziegler, K.E.; Vinson, W.H.; and Carroll, D.E., "The 2003 Iowa Corn Yield Test Report, District 4" (2003). Iowa Corn Yield Tests. 229.