Fig. 2. Wet bulk density (BDw) corresponding to the considered treatments, measured between the 122th (1-July) and 133th (15-September) weeks of the research, at the
volumetric soil water content of 0.25 cm3cm3. The thick red line on each box represents the mean value (thin black line, the median). Means labeled by the same letter (both
among sampling dates and treatments) are not significantly different, according to a two-tailed t-test (P = 0.05). (For interpretation of the references to color in this
figure
legend, the reader is referred to the web version of this article.)