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Traditionally, ranches in the Sandhills of Nebraska feed meadow hay to cows during the winter. Trace element composition of meadow hay varies. To determine if, when and where trace element supplementation is necessary, it is important to characterize the trace element concentrations in the hay. If the variation in trace element content of hay among location and years can be predicted ranch managers and advisors may develop appropriate strategies for sampling hay and preventing trace element deficiencies. Our objective was to develop a data base of trace element content of meadow hay from various locations over two years. The data base could be used to predict needs for sampling and supplementation strategies. appropriate strategies for sampling and supplementation strategies.