`<ptfkit/puckett1985.h>`¶

#include <ptfkit/puckett1985.h>

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.

PTF catalog page

`puckett1985_ptf_result`¶

typedef struct {
    double theta_0;
    double theta_1;
    double theta_5;
    double theta_10;
    double theta_30;
    double theta_60;
    double theta_100;
    double theta_500;
    double theta_1000;
    double theta_1500;
    double k_sat;
 } puckett1985_ptf_result;

Field	Description
`theta_0`	Volumetric water content at 0 kPa. (cm^3/cm^3)
`theta_1`	Volumetric water content at -1 kPa. (cm^3/cm^3)
`theta_5`	Volumetric water content at -5 kPa. (cm^3/cm^3)
`theta_10`	Volumetric water content at -10 kPa. (cm^3/cm^3)
`theta_30`	Volumetric water content at -30 kPa. (cm^3/cm^3)
`theta_60`	Volumetric water content at -60 kPa. (cm^3/cm^3)
`theta_100`	Volumetric water content at -100 kPa. (cm^3/cm^3)
`theta_500`	Volumetric water content at -500 kPa. (cm^3/cm^3)
`theta_1000`	Volumetric water content at -1000 kPa. (cm^3/cm^3)
`theta_1500`	Volumetric water content at -1500 kPa. (cm^3/cm^3)
`k_sat`	Saturated hydraulic conductivity. (m/s)

Functions¶

`calc_ptf_puckett1985`¶

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

static inline puckett1985_ptf_result calc_ptf_puckett1985(double sand, double fine_sand, double clay, double bulk_density, double porosity);

Parameters¶

Name	Direction	Description
`sand`	in	Sand content, 0.05-2 mm. (%)
`fine_sand`	in	Fine sand content, 0.106-0.25 mm. (%)
`clay`	in	Clay content, <0.002 mm. (%)
`bulk_density`	in	Oven-dry bulk density. (Mg/m^3)
`porosity`	in	Porosity calculated from measured bulk and particle densities. (cm^3/cm^3)

Returns¶

A puckett1985_ptf_result value.

Note

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

Warning

Use outside Lower Coastal Plain Ultisols requires independent validation.

<ptfkit/puckett1985.h>¶