# Soil Dry-down experiment data — Research Context

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Soil Dryness Determination

Objective: Gravimetric soil moisture calculations are taken from the difference in the wet and dry weights of a given soil sample. The oven temperature used to achieve dry soil is important. Soil samples were dried at 50, 60 and 105 Celsius and reweighed daily to determine dryness.

Procedure:

- Collect soil samples to desired depth.
- Sieve soil through 4mm screen.
- Weigh fresh soil into tin containers. Record soil weight.
- Place open tins of soil into oven at 50C.
- After at least 24 hours, remove the tins from the oven and allow them to cool to room temperature. Record the weight of each sample. Replace samples into the oven. Continue to reweigh the tins daily until they are no longer losing moisture.
- Increase oven temperature to 60C and repeat step 5.
- Increase oven temperature to 105C and repeat step 5.

This datatable is part of the Soil Dry-down experiment dataset.

A test to evaluate the residual soil moisture at various oven temperatures

#### Note

 Experiment: Research Context Dataset: KBS141 Datatable ID: KBS141_001.6 Repository link: Personnel: Stacey VanderWulp, principal contact Last Updated 2023-10-24
Variate Description Units
weigh date The date the sample was weighed
day the number of days since the start of the experiment
core the core number
depth the depth interval of the sample taken
sub sample the sub_sample number
tin number the number of the weighing tin
oven temperature c the oven temperature C
soil weight g the soil weight
Protocols

## Data Excerpt

weigh_date day core depth sub_sample tin_number oven_temperature_c soil_weight_g
2016-10-28 1 1 0-10cm 1 61 28.14
2016-10-28 1 1 0-10cm 2 141 27.63
2016-10-28 1 1 0-10cm 3 CC 127 25.7
2016-10-28 1 1 10-25cm 1 188 27.12
2016-10-28 1 1 10-25cm 2 139 25.49