Large Extent Spatial Models of Grain Yield: Where Are the Marginal Areas?.

David B. Myers, USDA-ARS, University of Florida, Columbia, MO, Newell Kitchen, USDA-ARS Cropping Systems and Water Quality Unit, Columbia, MO, Kenneth A. Sudduth, USDA-ARS Cropping Systems & Water Quality Research Unit, Columbia, MO and Fred Young, USDA-NRCS, Columbia, MO