Figure 5.
Effects of an increasing number of fungicide application events in cropland soils on 33P recovery (a). Significant differences between the number of applications are indicated with different letters examined using a Kruskal-Wallis rank test where X2 represents the model fit with the degrees of freedom in brackets (n=150). Boxes mark the interquartile range, vertical lines the whiskers, bold horizontal linesthe median and “x” the mean values. The relationship of 33P recovery and AMF richness in P. lanceolata roots (b) in the cropland soils (n=146), estimated using two-sided OLS regression (F1,144 = 13.02). The orange error band marks the 95% confidence interval. R2 corresponds to the adjusted R2 value.