README file for

Evett, Steven R.; Marek, Gary W.; Copeland, Karen S.; Howell, Terry A. Sr.; Colaizzi, Paul D.; Brauer, David K.; Ruthardt, Brice B. (2022). Growth and Yield Data for the Bushland, Texas, Soybean Datasets. Ag Data Commons. https://doi.org/10.15482/USDA.ADC/1528670

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Resources in this dataset are in Excel files. Each excel file contains a data dictionary for each tab containing data. There is also a tab named Introduction that lists the authors, equipment used, relevant citations, and explains the other tabs, which contain either data dictionaries or related data. Tab names are unique so that tabs may be saved as individual CSV files. The data are from measurements of plant density, growth, and yield made in the fields and in the four large, precision weighing lysimeters.

The resources are:

Resource Title: 1995 Bushland, TX, west soybean growth and yield data
File Name: 1995 West Soybean_Growth_and_Yield-V2.xlsx
Resource Description: This data resource consists of growth and yield data for the 1995 season when soybean [Glycine max (L.) Merr.] was grown at the USDA-ARS Conservation and Production Laboratory (CPRL), Soil and Water Management Research Unit (SWMRU) research weather station, Bushland, Texas (Lat. 35.186714°, Long. -102.094189°, elevation 1170 m above MSL). Soybean was grown on two large, precision weighing lysimeters, each in the center of a 4.44 ha square field. The two square fields were themselves arranged with one directly north of and contiguous with the other. Fields and lysimeters within each field were designated northwest (NW), and southwest (SW). Irrigation was by linear move sprinkler system. Irrigations were managed to replenish soil water used by the crop in the surface to 1.5-m depth soil profile on a weekly or more frequent basis as determined by soil profile water content readings made with a neutron probe to 2.4-m depth in the field. Irrigation management resulted in the crop being well watered.
The growth and yield data include plant height, plant row width, leaf area index, growth stage, total above-ground biomass, leaf and stem biomass, and final yield. Data are from replicate samples in the field and non-destructive (except for final harvest) measurements on the weighing lysimeters. In most cases yield data are available from both manual sampling on replicate plots in each field and from machine harvest.
There is a single spreadsheet for the west (NW and SW) lysimeters and fields. The spreadsheet contains tabs for data and corresponding tabs for data dictionaries. There are separate data tabs and corresponding dictionaries for plant density (population counts) after emergence, plant growth during the season, manual harvest from replicate plots in each field and from lysimeter surfaces, and machine (combine) harvest. An Introduction tab explains the tab names and contents, lists the authors, explains conventions, and lists some relevant references.

Resource Title: 2003 Bushland, TX, east soybean growth and yield data
File Name: 2003 East Soybean_Growth_and_Yield-V2.xlsx
Resource Description: This data resource consists of growth and yield data for the 2003 season when soybean [Glycine max (L.) Merr.] was grown at the USDA-ARS Conservation and Production Laboratory (CPRL), Soil and Water Management Research Unit (SWMRU) research weather station, Bushland, Texas (Lat. 35.186714°, Long. -102.094189°, elevation 1170 m above MSL). Soybean was grown on two large, precision weighing lysimeters, each in the center of a 4.44 ha square field. The two square fields were themselves arranged with one directly north of and contiguous with the other. Fields and lysimeters within each field were designated northeast (NE), and southeast (SE). Irrigation was by linear move sprinkler system. Irrigations were managed to replenish soil water used by the crop in the surface to 1.5-m depth soil profile on a weekly or more frequent basis as determined by soil profile water content readings made with a neutron probe to 2.4-m depth in the field. Irrigation management resulted in the crop being well watered. Deficit irrigation treatments were applied In one area of the SE field (span 6). Deficit irrigation treatments were irrigation amounts equivalent to 33% of the full (100%) irrigation or 67% of the full irrigation amount.
The growth and yield data include plant height, plant row width, leaf area index, growth stage, total above-ground biomass, leaf and stem biomass, and final yield. Data are from replicate samples in the field and non-destructive (except for final harvest) measurements on the weighing lysimeters. Yield data are available from both manual sampling on replicate plots in each field and on the lysimeters, but there is no machine (combine) harvest data for this year.
There is a single spreadsheet for the east (NE and SE) lysimeters and fields. The spreadsheet contains tabs for data and corresponding tabs for data dictionaries. There are separate data tabs and corresponding dictionaries for plant density (population counts after emergence), plant growth during the season, and manual harvest from replicate plots in each field and from lysimeter surfaces. An Introduction tab explains the tab names and contents, lists the authors, explains conventions, and lists some relevant references.

Resource Title: 2004 Bushland, TX, east soybean growth and yield data
File Name: 2004 East Soybean_Growth-and_Yield-V2.xlsx
Resource Description: This data resource consists of growth and yield data for the 2004 season when soybean [Glycine max (L.) Merr.] was grown at the USDA-ARS Conservation and Production Laboratory (CPRL), Soil and Water Management Research Unit (SWMRU) research weather station, Bushland, Texas (Lat. 35.186714°, Long. -102.094189°, elevation 1170 m above MSL). Soybean was grown on two large, precision weighing lysimeters, each in the center of a 4.44 ha square field. The two square fields were themselves arranged with one directly north of and contiguous with the other. Fields and lysimeters within each field were designated northeast (NE), and southeast (SE). Irrigation was by linear move sprinkler system. Irrigations were managed to replenish soil water used by the crop in the surface to 1.5-m depth soil profile on a weekly or more frequent basis as determined by soil profile water content readings made with a neutron probe to 2.4-m depth in the field. Irrigation management resulted in the crop being well watered. Deficit irrigation treatments were applied In one area of the NE field (span 1). Deficit irrigation treatments were irrigation amounts equivalent to 33% of the full (100%) irrigation or 67% of the full irrigation amount.
The growth and yield data include plant height, plant row width, leaf area index, growth stage, total above-ground biomass, leaf and stem biomass, and final yield. Data are from replicate samples in the field and non-destructive (except for final harvest) measurements on the weighing lysimeters. Yield data are available from both manual sampling on replicate plots in each field and on the lysimeters, but there is no machine (combine) harvest data for this year.
There is a single spreadsheet for the east (NE and SE) lysimeters and fields. The spreadsheet contains tabs for data and corresponding tabs for data dictionaries. There are separate data tabs and corresponding dictionaries for plant density (population counts after emergence), plant growth during the season, and manual harvest from replicate plots in each field and from lysimeter surfaces. An Introduction tab explains the tab names and contents, lists the authors, explains conventions, and lists some relevant references.

Resource Title: 2010 Bushland, TX, west soybean growth and yield data
File Name: 2010 West_Soybean_Growth_and_Yield-V2.xlsx
Resource Description: This data resource consists of growth and yield data the 2010 season when short season soybean [Glycine max (L.) Merr.] was grown as a late-planted catch crop after sunflower failure at the USDA-ARS Conservation and Production Laboratory (CPRL), Soil and Water Management Research Unit (SWMRU) research weather station, Bushland, Texas (Lat. 35.186714°, Long. -102.094189°, elevation 1170 m above MSL). Soybean was grown on two large, precision weighing lysimeters, each in the center of a 4.44 ha square field. The two square fields were themselves arranged with one directly north of and contiguous with the other. Fields and lysimeters within each field were designated northwest (NW), and southwest (SW). Irrigation was by linear move sprinkler system. Irrigation was applied only to establish the crop, which was thereafter grown as a dryland crop. A second irrigation done on day of year 293 was not relevant to the soybean growing season.
The growth and yield data include plant height, plant row width, leaf area index, growth stage, total above-ground biomass, leaf and stem biomass, and final yield. Data are from replicate samples in the field and non-destructive (except for final harvest) measurements on the weighing lysimeters. Yield data are available from manual sampling on replicate plots in each field, but no data are available from combine harvest because relevant harvest equipment was not available.
There is a single spreadsheet for the west (NW and SW) lysimeters and fields. The spreadsheet contains tabs for data and corresponding tabs for data dictionaries. There are separate data tabs and corresponding dictionaries for plant density (plant population counts after emergence), plant growth during the season, and manual harvest from replicate plots in each field and from lysimeter surfaces. The plant population density was relatively small because the crop was to be grown without irrigation. An Introduction tab explains the tab names and contents, lists the authors, explains conventions, and lists some relevant references.

Resource Titles: “2019 Bushland, TX, east soybean growth and yield data”, and “2019 Bushland, TX, west soybean growth and yield data”
File Names: “2019 East Soybean_Growth_and_Yield-V2.xlsx”, and “2019 West Soybean_Growth_and_Yield-V2.xlsx”
Resource Description: These data resources consists of growth and yield data the 2019 season when late planted short-season soybean [Glycine max (L.) Merr.] was grown as a catch crop after cotton failure at the USDA-ARS Conservation and Production Laboratory (CPRL), Soil and Water Management Research Unit (SWMRU) research weather station, Bushland, Texas (Lat. 35.186714°, Long. -102.094189°, elevation 1170 m above MSL). Soybean was grown on four large, precision weighing lysimeters, each in the center of a 4.44 ha square field. The four square fields were themselves arranged in the four quadrants of a larger square area that encompassed all four fields. Fields and lysimeters within each field were designated northeast (NE), southeast (SE), northwest (NW), and southwest (SW). Irrigation on the NW and SW fields was by linear move sprinkler system using low elevation spray applicators (LESA) spaced 1.52 apart along the irrigation system lateral and position to irrigate in the center of every other crop interrow. Irrigation on the NE and SE fields was by subsurface drip irrigation (SDI) using drip lines buried 1.52-m apart in every other crop interrow at 0.32- to 0.34-m depth. Emitters in the drip lines were spaced 0.30-m apart along the drip line. Irrigations were managed to replenish soil water used by the crop in the top 1.5 m of the soil profile on a weekly or more frequent basis as determined by soil profile water content readings made with a neutron probe to 2.4-m depth in the field. Irrigation management resulted in the crop being well watered.
The growth and yield data include plant density (population counts after emergence), plant height, plant row width, leaf area index, growth stage, total above-ground biomass, leaf and stem biomass, and final yield. Data are from replicate samples in the field and non-destructive (except for final harvest) measurements on the weighing lysimeters. Yield data are available from both manual sampling on replicate plots in each field and from machine harvest.
There is a single spreadsheet for the east (NE and SE) lysimeters and fields, and a single spreadsheet for the west (NW and SW) fields. Each spreadsheet contains tabs for data and corresponding tabs for data dictionaries. There are separate data tabs and corresponding dictionaries for plant density, plant growth during the season, and manual harvest from replicate plots in each field and from lysimeter surfaces, and machine (combine) harvest, An Introduction tab explains the tab names and contents, lists the authors, explains conventions, and lists some relevant references.

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