Soil Moisture under Rainout Shelters — Switchgrass Nitrogen Fixation Experiment

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Soil moisture measured at two depths (10 and 25 cm) in surface soils under the rainfall exclusion shelters of the Switchgrass Nitrogen Fixation Experiment. Soils under shelters manually received rainfall on differing schedules.

This datatable is part of the Switchgrass Nitrogen Fixation Experiment dataset.

This dataset contains data from the Switchgrass Nitrogen Fixation Experiment established in 2016 after conversion of the historically tilled plots (1-16) of the Interactions Experiment from annual crops to switchgrass (Cave-in-rock). The experiment maintained the fertilizer treatment (fertilized and not fertilized) of the Interactions Experiment, but the tillage treatment was discontinued because switchgrass is a perennial crop that is not tilled. From 2018-2022, a rainout shelter experiment that also used buried mesocosms was conducted in the legacy no-till, no fertilizer plots (3, 6, 8, and 9) to examine the effect of soil wetting/drying regimes on the relationship between associative nitrogen fixation (ANF) and switchgrass phenology, diazotroph communities, and nifH expression. The experiment was retired after the 2022 growing season in order to establish the Switchgrass Biodiversity Experiment.

Note

Experiment: Switchgrass Nitrogen Fixation Experiment
Data available from: June 2019 to May 2021
Dataset: KBS152
Datatable ID: KBS128-003.12
Core Areas Disturbance
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Last Updated 2024-04-30
Variate Description Units
site the experiment station
experiment the name of the experiment
sample datetime utc the time of sampling in UTC
plot the plot sampled
depth the sample depth cm cm
vwc fractional volumetric water content m^3/m^3
temperature soil temperature C
ec electrical conductivity
permittivity
voltage ratio Volt/Volt
sample id sample id
Protocols

Data Excerpt

site experiment sample_datetime_utc plot depth vwc ec temperature permittivity voltage_ratio sample_id
kbs interactions 2025-01-22 06:00:00 UTC 8 25.0 0.317 0.038 0.87 17.82 1.046 4725583
kbs interactions 2025-01-22 06:00:00 UTC 3 10.0 4725584
kbs interactions 2025-01-22 06:00:00 UTC 8 10.0 0.337 0.024 0.683 19.35 1.03 4725583
kbs interactions 2025-01-22 06:00:00 UTC 8 25.0 0.316 0.039 0.985 17.72 1.048 4725583
kbs interactions 2025-01-22 06:00:00 UTC 3 25.0 0.304 0.032 0.959 16.91 1.039 4725584
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