Table 1: Soil properties of selected samples for each soil grouping used in subsetting by soil order. Values listed in the table are the minimum and maximum for that specific subset with the mean in parentheses. Data is provided for samples from the Natural Resources Conservation Service (NRCS) archive where it is available. The compositional information (i.e., pH, texture, Al, Ca, and Fe) for the samples newly collected in 2010 has yet to be determined.

Total carbon wt%Organic carbon wt%Clay wt%Silt wt%Sand wt%pHTotal Al wt%Total Ca wt%Total Fe wt%

Andisol
soils
0.24–51
0.39–55.590.3–59.84.7–81.32.4–94.93.7–8
1.58–13.890.025–4.807.33–22.63
(13.39)(12.53)(17.26)(40.62)(42.83)(5.66)(8.54)(0.64)(15.49)

High activity clay soils
0.21–53.630.3–14.650.2–66.710.8–93.20.4–88.63.3–8.310.95a0.52a10.13a
(14.51)(3.94)(25.72)(44.08)(30.21)(5.89)

Low activity clay soils
0.15–10
0.2–3.58
7.6–88.710.4–69.50.75–69.84.5–7.37.66–9.610.049–0.1613.43–27.03
(1.65)(1.11)(47.52)(34.86)(17.61)(5.92)(8.28)(0.096)(23.23)

Organic-dominated soils
5–55.292.62–54.984.4–67.611.5–45.71.3–84.13.3–5.8Not available
(36.19)(20.26)(31.68)(30.45)(37.86)(4.29)

aOnly one data point available.