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    • Soil Water Content Data for The Bushland, Texas Large Weighing Lysimeter Experiments

    Metadata Updated: December 2, 2025

    This dataset contains soil water content data developed from neutron probe readings taken in access tubes in each of the four large, precision weighing lysimeters and in the fields surrounding each lysimeter at the USDA-ARS Conservation and Production Laboratory (CPRL), Soil and Water Management Research Unit (SWMRU), Bushland, Texas (Lat. 35.186714°, Long. -102.094189°, elevation 1170 m above MSL) beginning in 1989. Readings were taken periodically with a field-calibrated neutron probe at depths from 10 cm to 230 cm (maximum of 190 cm depth in the lysimeters) in 20-cm depth increments. Periods between readings were typically one to two weeks, sometimes longer according to experimental design and need for data. Field calibrations in the Pullman soil series were done every few years. Calibrations typically produced a regression equation with RMSE <= 0.01 m3 m-3. Data were used to guide irrigation scheduling to achieve full or deficit irrigation as required by the experimental design. Data may be used to calculate the soil profile water content in mm of water from the surface to the maximum depth of reading. Profile water content differences between reading times in the same access tube are considered the change in soil water storage during the period in question and may be used to compute evapotranspiration (ET) using the soil water balance equation: ET = (change in storage + P + I + F + R, where P is precipitation during the period, I is irrigation during the period, F is soil water flux (drainage) out of the bottom of the soil profile during the period, and R is the sum of runon and runoff during the period. Typically, R is taken as zero because the fields were furrow diked to prevent runon and runoff during most of each growing season. See the README for descriptions of each data file.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: Creative Commons CCZero

    Downloads & Resources

    Dates

    Metadata Created Date March 30, 2024
    Metadata Updated Date December 2, 2025
    Data Update Frequency irregular

    Metadata Source

    Harvested from USDA JSON

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date March 30, 2024
    Metadata Updated Date December 2, 2025
    Publisher Agricultural Research Service
    Maintainer
    Identifier 10.15482/USDA.ADC/1526332
    Data Last Modified 2025-11-21
    Public Access Level public
    Data Update Frequency irregular
    Bureau Code 005:18
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id b39588d1-cb76-489d-bb46-c2ab237f7484
    Harvest Source Id d3fafa34-0cb9-48f1-ab1d-5b5fdc783806
    Harvest Source Title USDA JSON
    License https://creativecommons.org/publicdomain/zero/1.0/
    Old Spatial {"type": "Polygon", "coordinates": -102.09906463948, 35.191719970106, -102.07671433134, 35.19121493622, -102.07678299485, 35.1865853205, -102.07609634934, 35.177044674547, -102.09913330298, 35.177072738625, -102.09906463948, 35.191719970106}
    Program Code 005:040
    Source Datajson Identifier True
    Source Hash b169339f1368068e303c9c893d16cc514f97ce5ba6738c2bad6d7338a44eecc8
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -102.09906463948, 35.191719970106, -102.07671433134, 35.19121493622, -102.07678299485, 35.1865853205, -102.07609634934, 35.177044674547, -102.09913330298, 35.177072738625, -102.09906463948, 35.191719970106}
    Temporal 1989-01-01/1989-01-01

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