Applicants must either be high school seniors involved in the potato industry or a member of 4-H or FFA or college freshmen, sophomores or juniors involved in the potato industry or a member of 4-H or FFA, according to the rules.
Applicants also must attend a school or live in the potato-growing states of Colorado, Idaho, Maine, Michigan, North Dakota, Oregon, Washington or Wisconsin.
McKenna, a native of Mapleton, Maine, has worked on potato harvest crews for several years.
As part of the application process, she had to submit an essay on how the potato industry can build and sustain consumer demand for its crop, according to a news release.
Judging was conducted by a panel with representatives from two industry magazines, the Denver-based U.S. Potato Board, the Washington, D.C.-based National Potato Council and Greensboro, N.C.-based Syngenta Crop Protection.
McKenna will be recognized at the Potato Expo, Jan. 8-10, 2014, in San Antonio, Texas.