Modelling Soil Water Retention for Weed Seed Germination Sensitivity to Water Potential
Figure 2
Fitted SWRC for soil water contents at soil matric potentials for the (a) summit, (b) backslope, and (c) toeslope positions averaged across two hillslopes using the Campbell (CA) model with absent parameter, and Brooks-Corey (BC), five- and four-parameter van Genuchten (VG5 and VG4), Tani (TA), and Russo (RU) models with modified by a logarithmic equation describing the adsorption of water on soil in the dry range of the retention curve. Error bars are SE for six water retention measurements.
