Irrigation “soil-moisture” audit measures the amount of moisture received at the root zone, not just on the surface layer. Audit combines FieldScout TDR 300 soil-moisture meter and SpecMaps Web-based software. Coupled with a customer-provided Spectrum Technologies Inc., Plainfield, Ill.unit, users can get on-the-spot, true root-zone moisture information. Immediate soil-moisture results are provided on the Web as a two-dimensional color map of soil-moisture availability. Wet and dry spots within the irrigation system become immediately apparent.