Figure 2
Finalized model for (a) N responsiveness model using only unfertilized check plots and (b) N fertilizer rate model using all plots. Relative yieldB and Relative yieldW are used to denote effects occurring on yields at the between sites and within-site levels, respectively. All path coefficients are standardized to represent effect sizes for significant relationships (p < 0.10). Model fit is assessed using the comparative fit index (CFI) and standardized root-mean-square of the residuals (SRMR), the latter of which is decomposed into error arising between sites (SRMRB) and within a site (SRMRW). Unstandardized regression coefficients and bootstrapped confidence intervals can be found in Tables S7 and S8, respectively.
