One of the newer methods of making hay, chopping it in the field or as it comes from the field and putting it in the barn or stacking it, has gained considerable popularity with some Iowa farmers who feed cattle.
Culbertson, C. C.
"Chop Hay for Steers?,"
Farm Science Reporter: Vol. 4
, Article 5.
Available at: https://lib.dr.iastate.edu/farmsciencereporter/vol4/iss3/5