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7 files

Weighing Lysimeter Data for The Bushland, Texas, Soybean Datasets

posted on 2024-04-02, 21:18 authored by Steven EvettSteven Evett, Gary W. Marek, Karen S. Copeland, Terry A. Sr. Howell, Paul D. Colaizzi, David K. Brauer, Brice B. Ruthardt

This dataset consists of five years of weighing lysimeter data for soybean [Glycine max (L.) Merr.] grown 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) in 1995, 2003, 2004, 2010 and 2019. In 1995, 2003, 2004, and 2010, soybean was grown on two large, precision weighing lysimeters, each in the center of a 4.44 ha square field. In 2019, soybean was grown on four large, precision weighing lysimeters, each in the center of a 4.4-ha square field. The weighing lysimeters were used to measure mass, which was converted to relative soil water storage with 0.05 mm accuracy at 5-minute intervals, and the 5-minute change in soil water storage was used along with precipitation and irrigation amounts to calculate crop evapotranspiration (ET), which is reported at 15-minute intervals. Although a quality control process was used, the ET data in this dataset are considered raw data. Advanced algorithms for detection of precipitation, dew and frost were applied in a separate process to determine ET values that are reported in files in a dataset entitled "Evapotranspiration and Water Balance Data for The Bushland, Texas Soybean Datasets". Those files have "water-balance" in their names. Each lysimeter was equipped with a suite of instruments to sense wind speed, air temperature and relative humidity, components of the radiation balance (e.g., net radiation, incoming and reflected shortwave, photosynthetically active radiation (PAR), incoming and reflected longwave, thermal infrared emitted by the plant/soil surface), soil heat flux, soil temperature, and soil volumetric water content at certain depths. Not all properties were always sensed in any one year; and instruments used changed from season to season, which are reasons that subsidiary datasets and data dictionaries for each season are required.
These datasets originate from research aimed at determining crop water use (ET), crop coefficients for use in ET-based irrigation scheduling based on a reference ET, crop growth, yield, harvest index, and crop water productivity as affected by irrigation method, timing, amount (full or some degree of deficit), agronomic practices, cultivar, and weather. Prior publications have focused on soybean ET, crop coefficients, crop water productivity, and simulation modeling of crop growth, water use, and yield. Crop coefficients have been used by ET networks. The data have utility for testing simulation models of crop ET, growth, and yield and have been used by both USDA and university researchers.

See the README for descriptions of each data file.

Resources in this dataset:

  • Resource Title: 1995 Bushland, TX, West Soybean Weighing Lysimeter and Microclimate Data.

    File Name: 1995_Soybean_W_Lys_ClimDat(FINAL).xlsx

  • Resource Title: 2003 Bushland, TX, East Soybean Weighing Lysimeter and Microclimate Data.

    File Name: 2003_Soybean E_Lys_ClimDat(FINAL).xlsx

  • Resource Title: 2004 Bushland, TX, East Soybean Weighing Lysimeter and Microclimate Data.

    File Name: 2004_Soybean E_Lys_ClimDat(FINAL).xlsx

  • Resource Title: 2010 Bushland, TX, West Soybean Weighing Lysimeter and Microclimate Data.

    File Name: 2010_Soybean_W_Lys_ClimDat(FINAL).xlsx

  • Resource Title: 2019 Bushland, TX, East Soybean Weighing Lysimeter and Microclimate Data.

    File Name: 2019_Soybean_E_Lys_ClimDat(FINAL).xlsx

  • Resource Title: 2019 Bushland, TX, West Soybean Weighing Lysimeter and Microclimate Data.

    File Name: 2019_Soybean_W_Lys_ClimDat(FINAL).xlsx

  • Resource Title: README.

    File Name: README_Bushland_Soybean_Lys.txt


USDA-ARS: 3090-13000-016-00D


Data contact name

Evett, Steven R.

Data contact email


Ag Data Commons

Intended use

These data may be used to test and calibrate models of crop growth, water use (ET), reference ET, and yield, and may be used to develop crop coefficients for use with a reference evapotranspiration model to estimate crop water use. Care was taken to ensure that lysimeter ET data were representative of the 4.4 ha fields within which each lysimeter was centered. Therefore, satellite data with 100-m or smaller pixels may be suitable for use with the lysimeter data in testing and calibration of models based on satellite data.

Use limitations

The data pertain to the specific location, soil, climate, cultivar, and agronomic practices described in the data sets. Extrapolation to other climates, soils, cultivars, and practices should be done with care. Individual fields were square and somewhat larger than 210 m in width and length, so care should be used when combining satellite data with these data if satellite image pixels are comparatively large. Observations of air temperature and relative humidity, wind speed, and solar irradiance taken at the lysimeters should not be used as weather input for simulation models; weather data observed under standard conditions at the research weather station should be used as input to simulation models.

Temporal Extent Start Date


Temporal Extent End Date



  • irregular


  • Not specified

Geographic Coverage


Geographic location - description

Bushland, Texas

ISO Topic Category

  • climatologyMeteorologyAtmosphere
  • farming
  • geoscientificInformation

National Agricultural Library Thesaurus terms

lysimeters; Texas; data collection; Agricultural Research Service; soil water storage; soil water; irrigation rates; evapotranspiration; wind speed; air temperature; relative humidity; net radiation; photosynthetically active radiation; soil heat flux; soil temperature; volumetric water content; crop coefficient; irrigation scheduling; plant cultural practices; cultivars; simulation models; satellites; meteorological data; deficit irrigation; solar radiation; microclimate; weather; soybeans; Glycine max; dew; frost

OMB Bureau Code

  • 005:18 - Agricultural Research Service

OMB Program Code

  • 005:040 - National Research

ARS National Program Number

  • 211

Primary article PubAg Handle

Pending citation

  • No

Public Access Level

  • Public

Preferred dataset citation

Evett, Steven R.; Marek, Gary W.; Copeland, Karen S.; Howell, Terry A. Sr.; Colaizzi, Paul D.; Brauer, David K.; Ruthardt, Brice B. (2023). Weighing Lysimeter Data for The Bushland, Texas, Soybean Datasets. Ag Data Commons.