Defining relative yield for soil test correlation and calibration trials in the Fertilizer Recommendation Support Tool

Austin W. Pearce, Nathan A. Slaton, Sarah E. Lyons, Carl H. Bolster, Tom W. Bruulsema, John H. Grove, John D. Jones, Josh M. McGrath, Fernando E. Miguez, Nathan O. Nelson, Deanna L. Osmond, Md Rasel Parvej, Eugenia M. Pena-Yewtukhiw, John T. Spargo