Growers Using Pioneer(r) Brand Corn Hybrids Win 9 National, 191 State Titles Rock Island, Illinois, Jan. 23, 2018 - James Cecil of Rock Island, Illinois, recently won state first place in the AA Non-Irrigated division of the 2017 National Corn Growers Association's (NCGA) Corn Yield Contest. Cecil won with Pioneer(r) P1197AM(tm) brand corn, which yielded 334.9659 bushels per acre.