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Fig. 4. Winter wheat grain yield by variety in the Magruder Plots, Stillwater, OK. Cultivars Fultz, Currell, SNG, Kharkov, Turkey, Tenmarq, Pawnee, Ponca, Concho, Kaw, Scout66, Triumph6, Osage, Tam101, Karl, Tonkawa, Custer, and Endurance were planted in 1893 and 1895–1907, 1894, 1908–1911, 1912–1916, 1917–1942, 1943–1945, 1946–1953, 1954–1957, 1958–1963, 1964–1968, 1969–1973, 1974–1977, 1978–1979, 1980–1992, 1993–1994, 1995–1999, 2000–2005, and 2006, respectively.
