Crop production is threatened by rivalries in a stalwart Kansas family struggling to hang on to its wheat farm. Wayne Rogers, Earl Holliman. Roger: Fredric Lehne. Mary Alice: Mariclare Costello. Calla: Jill Carroll. Peter: Robb Madrid. Tad: Matt McCoy. Dakota: Casey Siemaszko. T-Bone: Jay Kerr. Also known as "American Harvest."