Iowa Smooth Bromegrass Performance Tests, 1961-72: AG-90; by I.T. Carlson and W.F. Wedlin. S451 I8 A4x - Archives
Iowa Orchardgrass Performance Tests, 1962-74; AG-92; also by I.T. Carlson and W.F. Wedlin. S451 I8 A4x - Archives
Iowa crop performance test -- corn gray leaf spot ratings for Districts 5, 6, and 7 – Pm 660-GLS – these were conducted annually from 1997-2000. S544.3 I8 P35x - Archives