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  • 1
    Publication Date: 2013-08-31
    Description: A comparison was made among the CEAS crop reporting district (CRD), agrophysical unit (APU), and state level multiple regression yield models for corn and soybeans in Iowa and barley and spring wheat in North Dakota. The best predictions were made by the state model for North Dakota spring wheat, by the APU models for barley, by the CRD models for Iowa soybeans, and by APU covariance models for Iowa corn. Because of this lack of consistency of model performance, CRD models would be recommended due to the availability of the data.
    Type: NASA-CR-172923 , E83-10379 , NAS 1.26:172923 , YM-13-04419
    Format: application/pdf
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