Fig. 5.Shrinkage capacity at100 kPa and300 kPa (a), soil water retention curves
fitted with van Genuchten function (1980) (b) and pore size distribution (c)
estimated from the water retention curves of the soil cores sampled after the 3rd
drainage from the treatments with different amount of organic C (OC) input (C0, C1,
and C2) after deep tillage (DT) and shallow tillage (ST).