Corn silage is harvested from about 1.8% of Iowa corn acres. Most corn silage is harvested in the northeast and northwest portions of the state where the majority of dairy herds are located. In these regions, corn silage is a major portion of the row-crop acres. Because no independent yield trials are being conducted on corn hybrids for silage in Iowa, a coalition consisting of Iowa State University Extension, Northeast Iowa Community College, the Northeast Iowa Dairy Foundation, and several seed corn representatives initiated a corn silage hybrid trial at the Northeast Iowa Dairy Foundation farm in 2008. This is the third year of the corn silage trial.