Each year, producers of hybrid seed corn and sorghum varieties in Illinois and surrounding states are invited to enter hybrids in the Illinois performance trials.
Financing is provided thru entry fees.
Most of these hybrids are commercially available, although a few experimental hybrids are also entered. Number and location of tests. These sites represent the major soil and climatic areas of the state. There were 458 corn hybrids from 62 companies and 26 sorghum hybrids from 7 companies tested in 1999. Three replications of an alpha lattice design were used to give each entry an equal chance to show its merits.