By harvesting part of your corn as grain silage, you can sometimes save time, labor, and harvesting and storage costs if you're a livestock feeder. And special situations often make it advantageous to make grain silage.
Van Vlack, C. H.
"Making Ear-Corn and Shelled Corn Silage,"
Iowa Farm Science: Vol. 7
, Article 3.
Available at: https://lib.dr.iastate.edu/farmscience/vol7/iss3/3