Fig. 2. Soil bulk density and volumetric water content 7 d after the last water application in Exp. 2 (Williams loam). Samples were taken off-center from the path of the subsoiler. Tillage treatments were: (i) subsoiling with parabolic subsoiling shanks and secondary tillage with sweeps (SSplus), (ii) subsoiling with parabolic subsoiling shanks (SS), and (iii) not subsoiled (NoSS). Least significant differences are shown where P 0.05.

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