"It pays to plant good seed and Iowa Certified means good seed." That is the slogan with which some 600 Iowa producers of certified seed, cooperating with each other and with the Iowa State College Extension Service through membership in the Iowa Agricultural Experiment Association, are carrying the meaning of “IOWA CERTIFIED” to the farmers of Iowa and the Corn Belt.
Robinson, Joe L. and Hughes, H. D.
"The What And Why Of Certified Seed,"
Farm Science Reporter: Vol. 6
, Article 7.
Available at: https://lib.dr.iastate.edu/farmsciencereporter/vol6/iss1/7