Figure 5 : Correlation between the cumulative release of dissolved organic carbon (DOC) and nitrate (red dots); or between the cumulative release of DOC and phosphorus (blue triangles) over the course of the EUF extraction (Fig. 3).

From: Plant growth improvement mediated by nitrate capture in co-composted biochar

Figure 5

(A), release from BCpure; (B), release from BCcomp; error bars are stdev. of the mean (n = 3); equations and regression analysis results are provided in the figure. Note that the phosphorus y-axes in A and B are similar, while the nitrate y-axis of B (BCcomp) is 10-fold higher than the y-axis of A (BCpure).