Skip to content

Puckett et al. (1985), Alabama Lower Coastal Plain Ultisols.

Source

Puckett, W. E., Dane, J. H., & Hajek, B. F. (1985). Physical and mineralogical data to determine soil hydraulic properties. Soil Science Society of America Journal, 49, 831-836.

Scope

Territory: Lower Coastal Plain of Alabama, USA

Dataset: Seven pedons at seven locations representing six Ultisol series with similar genesis and clay mineralogy.

Functions

calc_ptf_puckett1985

Estimate a point water-retention curve and saturated hydraulic conductivity.

Status: implemented

Prediction target: Volumetric water contents at ten pressure heads and saturated hydraulic conductivity.

Models: \(h(\theta)\) — Point water-retention estimates from 0 to -1500 kPa; \(k(h)\) — Saturated hydraulic conductivity

Inputs

Name Type Unit Domain Description
sand number % 35 <= value <= 89 Sand content, 0.05-2 mm.
fine_sand number % — Fine sand content, 0.106-0.25 mm.
clay number % 1 <= value <= 42 Clay content, <0.002 mm.
bulk_density number Mg/m^3 1.47 <= value <= 1.86 Oven-dry bulk density.
porosity number cm^3/cm^3 0.30 <= value <= 0.48 Porosity calculated from measured bulk and particle densities.

Outputs

Name Unit Domain Description
theta_0 cm^3/cm^3 — Volumetric water content at 0 kPa.
theta_1 cm^3/cm^3 — Volumetric water content at -1 kPa.
theta_5 cm^3/cm^3 — Volumetric water content at -5 kPa.
theta_10 cm^3/cm^3 — Volumetric water content at -10 kPa.
theta_30 cm^3/cm^3 — Volumetric water content at -30 kPa.
theta_60 cm^3/cm^3 — Volumetric water content at -60 kPa.
theta_100 cm^3/cm^3 — Volumetric water content at -100 kPa.
theta_500 cm^3/cm^3 — Volumetric water content at -500 kPa.
theta_1000 cm^3/cm^3 — Volumetric water content at -1000 kPa.
theta_1500 cm^3/cm^3 — Volumetric water content at -1500 kPa.
k_sat m/s value >= 0 Saturated hydraulic conductivity.

Note

The regressions were developed for soils with similar genesis and clay mineralogy.

Warning

Use outside Lower Coastal Plain Ultisols requires independent validation.