Similarities among Test Sites Based on Cultivar Performance in the Hard Red Winter Wheat Region

Maximizing crop productivity requires effective selection and targeting of cultivars for appropriate production areas. Understanding similarities in cultivar response among test sites and underlying production zones within a crop production region is important for breeders to effectively choose test sites and interpret test data. Thirty years of wheat (Triticum aestivum L.) yield data from the Southern and Northern Regional Performance Nurseries (SRPN and NRPN, respectively) were analyzed in order to determine similarities among test sites and production zones in the Great Plains hard red winter wheat growing area (.)