The superior varieties of alfalfa - such as Vernal, Ranger and Buffalo - offer several advantages to Iowa farm operators looking for the most efficient production of high-protein hay and pasture for their livestock.
Scholl, J. M. and Wilsie, C. P.
"Using Alfalfa for Rotation Pasture,"
Iowa Farm Science: Vol. 13
, Article 2.
Available at: https://lib.dr.iastate.edu/farmscience/vol13/iss9/2