Comment:
In the "Report of the Twelfth Corn Improvement Conference of the North Central Region, 1951", the checks listed for each maturity group were: AES200, W240; AES300, W355; AES400, W464A; AES500, OhM15; AES600, OhK24; AES700, Ia4297; AES800, US13; and AES900, Mo.804.