The purpose of the Iowa Corn Yield Test is to find for each district of the state those strains of com which w ill produce the largest yields of sound grain. Significant differences in yield between strains grown in test fields under as nearly as possible the same conditions may be attributed to differences inherent in the strain.

The test was conducted in a manner similar to that of 1933 and 1934 in that 9 instead of 12 fields were used. Data were obtained this year, for the first time, on the percentage of dropped ears and on the percentage of damaged corn at harvest.