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Fig. 3. (a) Geotextile of Integrated plot I1 intact with extensive rooting above in topsoil. (b) Conventional plot C1 showing the effects of pocket gophers. Gopher burrows are at the interface between the topsoil (20 cm thick) and crushed tuff (detailed in Fig. 1). (c) Conventional plot C2 showing dye-stained root channels in crushed tuff. (d) Integrated plot I1 showing dye-stained root channels in crushed tuff and preferential flow paths around access tube used to measure soil water content via neutron probe. Compare to Figure 1 for scale.
