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ptfkit.pidgeon1972

ptfkit.pidgeon1972

Pidgeon (1972), available-water regressions for ferrallitic soils in Uganda.

Reference

Pidgeon, J. D. (1972). The measurement and prediction of available water capacity of ferrallitic soils in Uganda. Journal of Soil Science, 23(4), 431-441.

Territory

Non-alluvial ferrallitic soils in Uganda, predominantly kaolinitic and possibly illitic

Dataset

Ugandan profile samples; Entebbe alluvial and Nabbongo montmorillonitic soils were excluded from the adopted regressions.

FUNCTION DESCRIPTION
calc_ptf_pidgeon1972_awc

Estimate available water capacity from clay and organic matter.

calc_ptf_pidgeon1972_awc_coarse_sand

Estimate available water capacity from coarse sand.

calc_ptf_pidgeon1972_awc_fine_sand

Estimate available water capacity from fine sand.

calc_ptf_pidgeon1972_awc_sand_organic_matter

Estimate available water capacity from sand and organic matter.

calc_ptf_pidgeon1972_awc_very_fine_sand

Estimate available water capacity from very fine sand.

calc_ptf_pidgeon1972_eawc

Estimate extended available water capacity from silt, clay, and organic matter.

calc_ptf_pidgeon1972_eawc_coarse_sand_organic_matter

Estimate extended available water capacity from coarse sand and organic matter.

calc_ptf_pidgeon1972_eawc_fine_sand_organic_matter

Estimate extended available water capacity from fine sand and organic matter.

calc_ptf_pidgeon1972_eawc_sand

Estimate extended available water capacity from sand.

calc_ptf_pidgeon1972_eawc_sand_organic_matter

Estimate extended available water capacity from sand and organic matter.

calc_ptf_pidgeon1972_fc

Estimate gravimetric field capacity from silt, clay, and organic matter.

calc_ptf_pidgeon1972_fc_sand

Estimate gravimetric field capacity from sand.

calc_ptf_pidgeon1972_fc_sand_organic_matter

Estimate gravimetric field capacity from sand and organic matter.

calc_ptf_pidgeon1972_fc_vol_sand_organic_matter

Estimate volumetric field capacity from sand and organic matter.

calc_ptf_pidgeon1972_pwp

Estimate permanent wilting point from silt, clay, and organic matter.

calc_ptf_pidgeon1972_pwp_sand

Estimate permanent wilting point from sand.

calc_ptf_pidgeon1972_pwp_sand_organic_matter

Estimate permanent wilting point from sand and organic matter.

calc_ptf_pidgeon1972_awc

calc_ptf_pidgeon1972_awc(*, clay: float, organic_matter: float) -> floating
calc_ptf_pidgeon1972_awc(*, clay: ArrayLike, organic_matter: ArrayLike, out: NDArray[floating] | None = None) -> NDArray[floating]

Estimate available water capacity from clay and organic matter.

PARAMETER DESCRIPTION
clay

Clay measured by particle-size method 1. (%)

TYPE: float | ArrayLike

organic_matter

Organic matter content. (%)

TYPE: float | ArrayLike

out

Optional output arrays for in-place calculation.

TYPE: NDArray[floating] | None DEFAULT: None

RETURNS DESCRIPTION
available_water_capacity

Available water capacity. (mm/m)

TYPE: floating | NDArray[floating]

Models

\(h(\theta)\): Available-water estimate

Notes

Prediction target: Available water capacity

Source code in ptfkit/pidgeon1972.py
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def calc_ptf_pidgeon1972_awc(
    *,
    clay: float | ArrayLike,
    organic_matter: float | ArrayLike,
    out: NDArray[floating] | None = None,
) -> floating | NDArray[floating]:
    r"""Estimate available water capacity from clay and organic matter.

    Arguments:
        clay: Clay measured by particle-size method 1. (%)
        organic_matter: Organic matter content. (%)
        out: Optional output arrays for in-place calculation.

    Returns:
        available_water_capacity: Available water capacity. (mm/m)

    Models:
        $h(\theta)$: Available-water estimate

    Notes:
        Prediction target: Available water capacity

    """
    return _call(
        _calc_ptf_pidgeon1972_awc,
        clay,
        organic_matter,
        out=out,
    )

calc_ptf_pidgeon1972_awc_coarse_sand

calc_ptf_pidgeon1972_awc_coarse_sand(*, coarse_sand: float) -> floating
calc_ptf_pidgeon1972_awc_coarse_sand(*, coarse_sand: ArrayLike, out: NDArray[floating] | None = None) -> NDArray[floating]

Estimate available water capacity from coarse sand.

PARAMETER DESCRIPTION
coarse_sand

Coarse sand measured by particle-size method 1. (%)

TYPE: float | ArrayLike

out

Optional output arrays for in-place calculation.

TYPE: NDArray[floating] | None DEFAULT: None

RETURNS DESCRIPTION
available_water_capacity

Available water capacity. (mm/m)

TYPE: floating | NDArray[floating]

Models

\(h(\theta)\): Available-water estimate

Notes

Prediction target: Available water capacity

Source code in ptfkit/pidgeon1972.py
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def calc_ptf_pidgeon1972_awc_coarse_sand(
    *,
    coarse_sand: float | ArrayLike,
    out: NDArray[floating] | None = None,
) -> floating | NDArray[floating]:
    r"""Estimate available water capacity from coarse sand.

    Arguments:
        coarse_sand: Coarse sand measured by particle-size method 1. (%)
        out: Optional output arrays for in-place calculation.

    Returns:
        available_water_capacity: Available water capacity. (mm/m)

    Models:
        $h(\theta)$: Available-water estimate

    Notes:
        Prediction target: Available water capacity

    """
    return _call(
        _calc_ptf_pidgeon1972_awc_coarse_sand,
        coarse_sand,
        out=out,
    )

calc_ptf_pidgeon1972_awc_fine_sand

calc_ptf_pidgeon1972_awc_fine_sand(*, fine_sand: float) -> floating
calc_ptf_pidgeon1972_awc_fine_sand(*, fine_sand: ArrayLike, out: NDArray[floating] | None = None) -> NDArray[floating]

Estimate available water capacity from fine sand.

PARAMETER DESCRIPTION
fine_sand

Fine sand measured by particle-size method 1. (%)

TYPE: float | ArrayLike

out

Optional output arrays for in-place calculation.

TYPE: NDArray[floating] | None DEFAULT: None

RETURNS DESCRIPTION
available_water_capacity

Available water capacity. (mm/m)

TYPE: floating | NDArray[floating]

Models

\(h(\theta)\): Available-water estimate

Notes

Prediction target: Available water capacity

Source code in ptfkit/pidgeon1972.py
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def calc_ptf_pidgeon1972_awc_fine_sand(
    *,
    fine_sand: float | ArrayLike,
    out: NDArray[floating] | None = None,
) -> floating | NDArray[floating]:
    r"""Estimate available water capacity from fine sand.

    Arguments:
        fine_sand: Fine sand measured by particle-size method 1. (%)
        out: Optional output arrays for in-place calculation.

    Returns:
        available_water_capacity: Available water capacity. (mm/m)

    Models:
        $h(\theta)$: Available-water estimate

    Notes:
        Prediction target: Available water capacity

    """
    return _call(
        _calc_ptf_pidgeon1972_awc_fine_sand,
        fine_sand,
        out=out,
    )

calc_ptf_pidgeon1972_awc_sand_organic_matter

calc_ptf_pidgeon1972_awc_sand_organic_matter(*, sand: float, organic_matter: float) -> floating
calc_ptf_pidgeon1972_awc_sand_organic_matter(*, sand: ArrayLike, organic_matter: ArrayLike, out: NDArray[floating] | None = None) -> NDArray[floating]

Estimate available water capacity from sand and organic matter.

PARAMETER DESCRIPTION
sand

Sand measured by particle-size method 2. (%)

TYPE: float | ArrayLike

organic_matter

Organic matter content. (%)

TYPE: float | ArrayLike

out

Optional output arrays for in-place calculation.

TYPE: NDArray[floating] | None DEFAULT: None

RETURNS DESCRIPTION
available_water_capacity

Available water capacity. (mm/m)

TYPE: floating | NDArray[floating]

Models

\(h(\theta)\): Available-water estimate

Notes

Prediction target: Available water capacity

Source code in ptfkit/pidgeon1972.py
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def calc_ptf_pidgeon1972_awc_sand_organic_matter(
    *,
    sand: float | ArrayLike,
    organic_matter: float | ArrayLike,
    out: NDArray[floating] | None = None,
) -> floating | NDArray[floating]:
    r"""Estimate available water capacity from sand and organic matter.

    Arguments:
        sand: Sand measured by particle-size method 2. (%)
        organic_matter: Organic matter content. (%)
        out: Optional output arrays for in-place calculation.

    Returns:
        available_water_capacity: Available water capacity. (mm/m)

    Models:
        $h(\theta)$: Available-water estimate

    Notes:
        Prediction target: Available water capacity

    """
    return _call(
        _calc_ptf_pidgeon1972_awc_sand_organic_matter,
        sand,
        organic_matter,
        out=out,
    )

calc_ptf_pidgeon1972_awc_very_fine_sand

calc_ptf_pidgeon1972_awc_very_fine_sand(*, very_fine_sand: float) -> floating
calc_ptf_pidgeon1972_awc_very_fine_sand(*, very_fine_sand: ArrayLike, out: NDArray[floating] | None = None) -> NDArray[floating]

Estimate available water capacity from very fine sand.

PARAMETER DESCRIPTION
very_fine_sand

Very fine sand measured by particle-size method 1. (%)

TYPE: float | ArrayLike

out

Optional output arrays for in-place calculation.

TYPE: NDArray[floating] | None DEFAULT: None

RETURNS DESCRIPTION
available_water_capacity

Available water capacity. (mm/m)

TYPE: floating | NDArray[floating]

Models

\(h(\theta)\): Available-water estimate

Notes

Prediction target: Available water capacity

Source code in ptfkit/pidgeon1972.py
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def calc_ptf_pidgeon1972_awc_very_fine_sand(
    *,
    very_fine_sand: float | ArrayLike,
    out: NDArray[floating] | None = None,
) -> floating | NDArray[floating]:
    r"""Estimate available water capacity from very fine sand.

    Arguments:
        very_fine_sand: Very fine sand measured by particle-size method 1. (%)
        out: Optional output arrays for in-place calculation.

    Returns:
        available_water_capacity: Available water capacity. (mm/m)

    Models:
        $h(\theta)$: Available-water estimate

    Notes:
        Prediction target: Available water capacity

    """
    return _call(
        _calc_ptf_pidgeon1972_awc_very_fine_sand,
        very_fine_sand,
        out=out,
    )

calc_ptf_pidgeon1972_eawc

calc_ptf_pidgeon1972_eawc(*, silt: float, clay: float, organic_matter: float) -> floating
calc_ptf_pidgeon1972_eawc(*, silt: ArrayLike, clay: ArrayLike, organic_matter: ArrayLike, out: NDArray[floating] | None = None) -> NDArray[floating]

Estimate extended available water capacity from silt, clay, and organic matter.

PARAMETER DESCRIPTION
silt

Silt measured by particle-size method 2. (%)

TYPE: float | ArrayLike

clay

Clay measured by particle-size method 2. (%)

TYPE: float | ArrayLike

organic_matter

Organic matter content. (%)

TYPE: float | ArrayLike

out

Optional output arrays for in-place calculation.

TYPE: NDArray[floating] | None DEFAULT: None

RETURNS DESCRIPTION
extended_available_water_capacity

Extended available water capacity. (mm/m)

TYPE: floating | NDArray[floating]

Models

\(h(\theta)\): Available-water estimate

Notes

Prediction target: Extended available water capacity

Source code in ptfkit/pidgeon1972.py
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def calc_ptf_pidgeon1972_eawc(
    *,
    silt: float | ArrayLike,
    clay: float | ArrayLike,
    organic_matter: float | ArrayLike,
    out: NDArray[floating] | None = None,
) -> floating | NDArray[floating]:
    r"""Estimate extended available water capacity from silt, clay, and organic matter.

    Arguments:
        silt: Silt measured by particle-size method 2. (%)
        clay: Clay measured by particle-size method 2. (%)
        organic_matter: Organic matter content. (%)
        out: Optional output arrays for in-place calculation.

    Returns:
        extended_available_water_capacity: Extended available water capacity. (mm/m)

    Models:
        $h(\theta)$: Available-water estimate

    Notes:
        Prediction target: Extended available water capacity

    """
    return _call(
        _calc_ptf_pidgeon1972_eawc,
        silt,
        clay,
        organic_matter,
        out=out,
    )

calc_ptf_pidgeon1972_eawc_coarse_sand_organic_matter

calc_ptf_pidgeon1972_eawc_coarse_sand_organic_matter(*, coarse_sand: float, organic_matter: float) -> floating
calc_ptf_pidgeon1972_eawc_coarse_sand_organic_matter(*, coarse_sand: ArrayLike, organic_matter: ArrayLike, out: NDArray[floating] | None = None) -> NDArray[floating]

Estimate extended available water capacity from coarse sand and organic matter.

PARAMETER DESCRIPTION
coarse_sand

Coarse sand measured by particle-size method 1. (%)

TYPE: float | ArrayLike

organic_matter

Organic matter content. (%)

TYPE: float | ArrayLike

out

Optional output arrays for in-place calculation.

TYPE: NDArray[floating] | None DEFAULT: None

RETURNS DESCRIPTION
extended_available_water_capacity

Extended available water capacity. (mm/m)

TYPE: floating | NDArray[floating]

Models

\(h(\theta)\): Available-water estimate

Notes

Prediction target: Extended available water capacity

Source code in ptfkit/pidgeon1972.py
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def calc_ptf_pidgeon1972_eawc_coarse_sand_organic_matter(
    *,
    coarse_sand: float | ArrayLike,
    organic_matter: float | ArrayLike,
    out: NDArray[floating] | None = None,
) -> floating | NDArray[floating]:
    r"""Estimate extended available water capacity from coarse sand and organic matter.

    Arguments:
        coarse_sand: Coarse sand measured by particle-size method 1. (%)
        organic_matter: Organic matter content. (%)
        out: Optional output arrays for in-place calculation.

    Returns:
        extended_available_water_capacity: Extended available water capacity. (mm/m)

    Models:
        $h(\theta)$: Available-water estimate

    Notes:
        Prediction target: Extended available water capacity

    """
    return _call(
        _calc_ptf_pidgeon1972_eawc_coarse_sand_organic_matter,
        coarse_sand,
        organic_matter,
        out=out,
    )

calc_ptf_pidgeon1972_eawc_fine_sand_organic_matter

calc_ptf_pidgeon1972_eawc_fine_sand_organic_matter(*, fine_sand: float, organic_matter: float) -> floating
calc_ptf_pidgeon1972_eawc_fine_sand_organic_matter(*, fine_sand: ArrayLike, organic_matter: ArrayLike, out: NDArray[floating] | None = None) -> NDArray[floating]

Estimate extended available water capacity from fine sand and organic matter.

PARAMETER DESCRIPTION
fine_sand

Fine sand measured by particle-size method 1. (%)

TYPE: float | ArrayLike

organic_matter

Organic matter content. (%)

TYPE: float | ArrayLike

out

Optional output arrays for in-place calculation.

TYPE: NDArray[floating] | None DEFAULT: None

RETURNS DESCRIPTION
extended_available_water_capacity

Extended available water capacity. (mm/m)

TYPE: floating | NDArray[floating]

Models

\(h(\theta)\): Available-water estimate

Notes

Prediction target: Extended available water capacity

Source code in ptfkit/pidgeon1972.py
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def calc_ptf_pidgeon1972_eawc_fine_sand_organic_matter(
    *,
    fine_sand: float | ArrayLike,
    organic_matter: float | ArrayLike,
    out: NDArray[floating] | None = None,
) -> floating | NDArray[floating]:
    r"""Estimate extended available water capacity from fine sand and organic matter.

    Arguments:
        fine_sand: Fine sand measured by particle-size method 1. (%)
        organic_matter: Organic matter content. (%)
        out: Optional output arrays for in-place calculation.

    Returns:
        extended_available_water_capacity: Extended available water capacity. (mm/m)

    Models:
        $h(\theta)$: Available-water estimate

    Notes:
        Prediction target: Extended available water capacity

    """
    return _call(
        _calc_ptf_pidgeon1972_eawc_fine_sand_organic_matter,
        fine_sand,
        organic_matter,
        out=out,
    )

calc_ptf_pidgeon1972_eawc_sand

calc_ptf_pidgeon1972_eawc_sand(*, sand: float) -> floating
calc_ptf_pidgeon1972_eawc_sand(*, sand: ArrayLike, out: NDArray[floating] | None = None) -> NDArray[floating]

Estimate extended available water capacity from sand.

PARAMETER DESCRIPTION
sand

Sand measured by particle-size method 2. (%)

TYPE: float | ArrayLike

out

Optional output arrays for in-place calculation.

TYPE: NDArray[floating] | None DEFAULT: None

RETURNS DESCRIPTION
extended_available_water_capacity

Extended available water capacity. (mm/m)

TYPE: floating | NDArray[floating]

Models

\(h(\theta)\): Available-water estimate

Notes

Prediction target: Extended available water capacity

Source code in ptfkit/pidgeon1972.py
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def calc_ptf_pidgeon1972_eawc_sand(
    *,
    sand: float | ArrayLike,
    out: NDArray[floating] | None = None,
) -> floating | NDArray[floating]:
    r"""Estimate extended available water capacity from sand.

    Arguments:
        sand: Sand measured by particle-size method 2. (%)
        out: Optional output arrays for in-place calculation.

    Returns:
        extended_available_water_capacity: Extended available water capacity. (mm/m)

    Models:
        $h(\theta)$: Available-water estimate

    Notes:
        Prediction target: Extended available water capacity

    """
    return _call(
        _calc_ptf_pidgeon1972_eawc_sand,
        sand,
        out=out,
    )

calc_ptf_pidgeon1972_eawc_sand_organic_matter

calc_ptf_pidgeon1972_eawc_sand_organic_matter(*, sand: float, organic_matter: float) -> floating
calc_ptf_pidgeon1972_eawc_sand_organic_matter(*, sand: ArrayLike, organic_matter: ArrayLike, out: NDArray[floating] | None = None) -> NDArray[floating]

Estimate extended available water capacity from sand and organic matter.

PARAMETER DESCRIPTION
sand

Sand measured by particle-size method 1. (%)

TYPE: float | ArrayLike

organic_matter

Organic matter content. (%)

TYPE: float | ArrayLike

out

Optional output arrays for in-place calculation.

TYPE: NDArray[floating] | None DEFAULT: None

RETURNS DESCRIPTION
extended_available_water_capacity

Extended available water capacity. (mm/m)

TYPE: floating | NDArray[floating]

Models

\(h(\theta)\): Available-water estimate

Notes

Prediction target: Extended available water capacity

Source code in ptfkit/pidgeon1972.py
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def calc_ptf_pidgeon1972_eawc_sand_organic_matter(
    *,
    sand: float | ArrayLike,
    organic_matter: float | ArrayLike,
    out: NDArray[floating] | None = None,
) -> floating | NDArray[floating]:
    r"""Estimate extended available water capacity from sand and organic matter.

    Arguments:
        sand: Sand measured by particle-size method 1. (%)
        organic_matter: Organic matter content. (%)
        out: Optional output arrays for in-place calculation.

    Returns:
        extended_available_water_capacity: Extended available water capacity. (mm/m)

    Models:
        $h(\theta)$: Available-water estimate

    Notes:
        Prediction target: Extended available water capacity

    """
    return _call(
        _calc_ptf_pidgeon1972_eawc_sand_organic_matter,
        sand,
        organic_matter,
        out=out,
    )

calc_ptf_pidgeon1972_fc

calc_ptf_pidgeon1972_fc(*, silt: float, clay: float, organic_matter: float) -> floating
calc_ptf_pidgeon1972_fc(*, silt: ArrayLike, clay: ArrayLike, organic_matter: ArrayLike, out: NDArray[floating] | None = None) -> NDArray[floating]

Estimate gravimetric field capacity from silt, clay, and organic matter.

PARAMETER DESCRIPTION
silt

Silt measured by particle-size method 2. (%)

TYPE: float | ArrayLike

clay

Clay measured by particle-size method 2. (%)

TYPE: float | ArrayLike

organic_matter

Organic matter content. (%)

TYPE: float | ArrayLike

out

Optional output arrays for in-place calculation.

TYPE: NDArray[floating] | None DEFAULT: None

RETURNS DESCRIPTION
field_capacity

Gravimetric field capacity. (% w/w)

TYPE: floating | NDArray[floating]

Models

\(h(\theta)\): Point estimate

Notes

Prediction target: Gravimetric field capacity The reviewed organic-matter coefficient is 1.54.

Source code in ptfkit/pidgeon1972.py
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def calc_ptf_pidgeon1972_fc(
    *,
    silt: float | ArrayLike,
    clay: float | ArrayLike,
    organic_matter: float | ArrayLike,
    out: NDArray[floating] | None = None,
) -> floating | NDArray[floating]:
    r"""Estimate gravimetric field capacity from silt, clay, and organic matter.

    Arguments:
        silt: Silt measured by particle-size method 2. (%)
        clay: Clay measured by particle-size method 2. (%)
        organic_matter: Organic matter content. (%)
        out: Optional output arrays for in-place calculation.

    Returns:
        field_capacity: Gravimetric field capacity. (% w/w)

    Models:
        $h(\theta)$: Point estimate

    Notes:
        Prediction target: Gravimetric field capacity
        The reviewed organic-matter coefficient is 1.54.

    """
    return _call(
        _calc_ptf_pidgeon1972_fc,
        silt,
        clay,
        organic_matter,
        out=out,
    )

calc_ptf_pidgeon1972_fc_sand

calc_ptf_pidgeon1972_fc_sand(*, sand: float) -> floating
calc_ptf_pidgeon1972_fc_sand(*, sand: ArrayLike, out: NDArray[floating] | None = None) -> NDArray[floating]

Estimate gravimetric field capacity from sand.

PARAMETER DESCRIPTION
sand

Sand measured by particle-size method 2. (%)

TYPE: float | ArrayLike

out

Optional output arrays for in-place calculation.

TYPE: NDArray[floating] | None DEFAULT: None

RETURNS DESCRIPTION
field_capacity

Gravimetric field capacity. (% w/w)

TYPE: floating | NDArray[floating]

Models

\(h(\theta)\): Point estimate

Notes

Prediction target: Gravimetric field capacity

Source code in ptfkit/pidgeon1972.py
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def calc_ptf_pidgeon1972_fc_sand(
    *,
    sand: float | ArrayLike,
    out: NDArray[floating] | None = None,
) -> floating | NDArray[floating]:
    r"""Estimate gravimetric field capacity from sand.

    Arguments:
        sand: Sand measured by particle-size method 2. (%)
        out: Optional output arrays for in-place calculation.

    Returns:
        field_capacity: Gravimetric field capacity. (% w/w)

    Models:
        $h(\theta)$: Point estimate

    Notes:
        Prediction target: Gravimetric field capacity

    """
    return _call(
        _calc_ptf_pidgeon1972_fc_sand,
        sand,
        out=out,
    )

calc_ptf_pidgeon1972_fc_sand_organic_matter

calc_ptf_pidgeon1972_fc_sand_organic_matter(*, sand: float, organic_matter: float) -> floating
calc_ptf_pidgeon1972_fc_sand_organic_matter(*, sand: ArrayLike, organic_matter: ArrayLike, out: NDArray[floating] | None = None) -> NDArray[floating]

Estimate gravimetric field capacity from sand and organic matter.

PARAMETER DESCRIPTION
sand

Sand measured by particle-size method 2. (%)

TYPE: float | ArrayLike

organic_matter

Organic matter content. (%)

TYPE: float | ArrayLike

out

Optional output arrays for in-place calculation.

TYPE: NDArray[floating] | None DEFAULT: None

RETURNS DESCRIPTION
field_capacity

Gravimetric field capacity. (% w/w)

TYPE: floating | NDArray[floating]

Models

\(h(\theta)\): Point estimate

Notes

Prediction target: Gravimetric field capacity

Source code in ptfkit/pidgeon1972.py
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def calc_ptf_pidgeon1972_fc_sand_organic_matter(
    *,
    sand: float | ArrayLike,
    organic_matter: float | ArrayLike,
    out: NDArray[floating] | None = None,
) -> floating | NDArray[floating]:
    r"""Estimate gravimetric field capacity from sand and organic matter.

    Arguments:
        sand: Sand measured by particle-size method 2. (%)
        organic_matter: Organic matter content. (%)
        out: Optional output arrays for in-place calculation.

    Returns:
        field_capacity: Gravimetric field capacity. (% w/w)

    Models:
        $h(\theta)$: Point estimate

    Notes:
        Prediction target: Gravimetric field capacity

    """
    return _call(
        _calc_ptf_pidgeon1972_fc_sand_organic_matter,
        sand,
        organic_matter,
        out=out,
    )

calc_ptf_pidgeon1972_fc_vol_sand_organic_matter

calc_ptf_pidgeon1972_fc_vol_sand_organic_matter(*, sand: float, organic_matter: float) -> floating
calc_ptf_pidgeon1972_fc_vol_sand_organic_matter(*, sand: ArrayLike, organic_matter: ArrayLike, out: NDArray[floating] | None = None) -> NDArray[floating]

Estimate volumetric field capacity from sand and organic matter.

PARAMETER DESCRIPTION
sand

Sand measured by particle-size method 2. (%)

TYPE: float | ArrayLike

organic_matter

Organic matter content. (%)

TYPE: float | ArrayLike

out

Optional output arrays for in-place calculation.

TYPE: NDArray[floating] | None DEFAULT: None

RETURNS DESCRIPTION
field_capacity

Volumetric field capacity. (% v/v)

TYPE: floating | NDArray[floating]

Models

\(h(\theta)\): Point estimate

Notes

Prediction target: Volumetric field capacity

Source code in ptfkit/pidgeon1972.py
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def calc_ptf_pidgeon1972_fc_vol_sand_organic_matter(
    *,
    sand: float | ArrayLike,
    organic_matter: float | ArrayLike,
    out: NDArray[floating] | None = None,
) -> floating | NDArray[floating]:
    r"""Estimate volumetric field capacity from sand and organic matter.

    Arguments:
        sand: Sand measured by particle-size method 2. (%)
        organic_matter: Organic matter content. (%)
        out: Optional output arrays for in-place calculation.

    Returns:
        field_capacity: Volumetric field capacity. (% v/v)

    Models:
        $h(\theta)$: Point estimate

    Notes:
        Prediction target: Volumetric field capacity

    """
    return _call(
        _calc_ptf_pidgeon1972_fc_vol_sand_organic_matter,
        sand,
        organic_matter,
        out=out,
    )

calc_ptf_pidgeon1972_pwp

calc_ptf_pidgeon1972_pwp(*, silt: float, clay: float, organic_matter: float) -> floating
calc_ptf_pidgeon1972_pwp(*, silt: ArrayLike, clay: ArrayLike, organic_matter: ArrayLike, out: NDArray[floating] | None = None) -> NDArray[floating]

Estimate permanent wilting point from silt, clay, and organic matter.

PARAMETER DESCRIPTION
silt

Silt measured by particle-size method 2. (%)

TYPE: float | ArrayLike

clay

Clay measured by particle-size method 2. (%)

TYPE: float | ArrayLike

organic_matter

Organic matter content. (%)

TYPE: float | ArrayLike

out

Optional output arrays for in-place calculation.

TYPE: NDArray[floating] | None DEFAULT: None

RETURNS DESCRIPTION
permanent_wilting_point

Permanent wilting point. (% w/w)

TYPE: floating | NDArray[floating]

Models

\(h(\theta)\): Point estimate

Notes

Prediction target: Gravimetric permanent wilting point

Source code in ptfkit/pidgeon1972.py
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def calc_ptf_pidgeon1972_pwp(
    *,
    silt: float | ArrayLike,
    clay: float | ArrayLike,
    organic_matter: float | ArrayLike,
    out: NDArray[floating] | None = None,
) -> floating | NDArray[floating]:
    r"""Estimate permanent wilting point from silt, clay, and organic matter.

    Arguments:
        silt: Silt measured by particle-size method 2. (%)
        clay: Clay measured by particle-size method 2. (%)
        organic_matter: Organic matter content. (%)
        out: Optional output arrays for in-place calculation.

    Returns:
        permanent_wilting_point: Permanent wilting point. (% w/w)

    Models:
        $h(\theta)$: Point estimate

    Notes:
        Prediction target: Gravimetric permanent wilting point

    """
    return _call(
        _calc_ptf_pidgeon1972_pwp,
        silt,
        clay,
        organic_matter,
        out=out,
    )

calc_ptf_pidgeon1972_pwp_sand

calc_ptf_pidgeon1972_pwp_sand(*, sand: float) -> floating
calc_ptf_pidgeon1972_pwp_sand(*, sand: ArrayLike, out: NDArray[floating] | None = None) -> NDArray[floating]

Estimate permanent wilting point from sand.

PARAMETER DESCRIPTION
sand

Sand measured by particle-size method 1. (%)

TYPE: float | ArrayLike

out

Optional output arrays for in-place calculation.

TYPE: NDArray[floating] | None DEFAULT: None

RETURNS DESCRIPTION
permanent_wilting_point

Permanent wilting point. (% w/w)

TYPE: floating | NDArray[floating]

Models

\(h(\theta)\): Point estimate

Notes

Prediction target: Gravimetric permanent wilting point

Source code in ptfkit/pidgeon1972.py
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def calc_ptf_pidgeon1972_pwp_sand(
    *,
    sand: float | ArrayLike,
    out: NDArray[floating] | None = None,
) -> floating | NDArray[floating]:
    r"""Estimate permanent wilting point from sand.

    Arguments:
        sand: Sand measured by particle-size method 1. (%)
        out: Optional output arrays for in-place calculation.

    Returns:
        permanent_wilting_point: Permanent wilting point. (% w/w)

    Models:
        $h(\theta)$: Point estimate

    Notes:
        Prediction target: Gravimetric permanent wilting point

    """
    return _call(
        _calc_ptf_pidgeon1972_pwp_sand,
        sand,
        out=out,
    )

calc_ptf_pidgeon1972_pwp_sand_organic_matter

calc_ptf_pidgeon1972_pwp_sand_organic_matter(*, sand: float, organic_matter: float) -> floating
calc_ptf_pidgeon1972_pwp_sand_organic_matter(*, sand: ArrayLike, organic_matter: ArrayLike, out: NDArray[floating] | None = None) -> NDArray[floating]

Estimate permanent wilting point from sand and organic matter.

PARAMETER DESCRIPTION
sand

Sand measured by particle-size method 2. (%)

TYPE: float | ArrayLike

organic_matter

Organic matter content. (%)

TYPE: float | ArrayLike

out

Optional output arrays for in-place calculation.

TYPE: NDArray[floating] | None DEFAULT: None

RETURNS DESCRIPTION
permanent_wilting_point

Permanent wilting point. (% w/w)

TYPE: floating | NDArray[floating]

Models

\(h(\theta)\): Point estimate

Notes

Prediction target: Gravimetric permanent wilting point

Source code in ptfkit/pidgeon1972.py
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def calc_ptf_pidgeon1972_pwp_sand_organic_matter(
    *,
    sand: float | ArrayLike,
    organic_matter: float | ArrayLike,
    out: NDArray[floating] | None = None,
) -> floating | NDArray[floating]:
    r"""Estimate permanent wilting point from sand and organic matter.

    Arguments:
        sand: Sand measured by particle-size method 2. (%)
        organic_matter: Organic matter content. (%)
        out: Optional output arrays for in-place calculation.

    Returns:
        permanent_wilting_point: Permanent wilting point. (% w/w)

    Models:
        $h(\theta)$: Point estimate

    Notes:
        Prediction target: Gravimetric permanent wilting point

    """
    return _call(
        _calc_ptf_pidgeon1972_pwp_sand_organic_matter,
        sand,
        organic_matter,
        out=out,
    )