Soil Bulk Density — Resource Gradient Experiment
Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use
Bulk density of surface soils (0-25 cm) collected in fall 2016 from treatments F1, F5, and F8 under both rainfed and irrigated conditions and divided into 0-10 and 10-25 cm intervals. For 2007 samples, core dimensions were 14 cm height x 7.9 cm diameter.
This datatable is part of the Resource Gradient Experiment dataset. This dataset contains the agronomic yields and soil properties of the LTER Resource Gradient Experiment, which applies nine different rates of nitrogen fertilization (F1-F9) to annual row crops under rainfed (since 1999) and irrigated (since 2003) conditions. Since 2006, row crops have followed the same rotation as the LTER Main Cropping System Experiment (MCSE; corn-soybean-wheat); continuous corn was grown from 1999-2005. Nitrogen fertilization rates differ by crop (since 2008) and are given on the plot map.
The experiment moved to its current location in the LTER Main Site in 2005; previous experimental designs and locations are given here
Note
| Experiment: | Resource Gradient Experiment |
| Data available from: | August 2007 to November 2016 |
| Dataset: | KBS033 |
| Datatable ID: | KBS033-008.113 |
| Core Areas | Disturbance |
| Repository link: | http://doi.org/10.6073/pasta/b87efd66b937c806061635e752862d8a |
| Related Tables: | |
| Personnel: |
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| Last Updated | 2023-11-27 |
| Variate | Description | Units |
|---|---|---|
| sample date | date the sample was taken | |
| treatment | the treatment sampled | |
| replicate | the replicate sampled | |
| plot | the plot sampled | |
| core | The core number | |
| top depth cm | top of the depth of the sample (cm) | cm |
| bottom depth cm | bottom depth of the sample (cm) | cm |
| gravel free bulk density | bulk density of the gravel free soil fraction (gravel >4 mm removed) | |
| total bulkt density g cm3 | total bulk density (including any gravel) | |
| moisture | soil moisture at sampling (dry weight basis) | g/g |
| gravel weight |
| Protocols |
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Data Excerpt
| sample_date | treatment | replicate | plot | core | top_depth_cm | bottom_depth_cm | gravel_free_bulk_density_g_cm3 | total_bulk_density_g_cm3 | moisture | gravel_weight |
|---|---|---|---|---|---|---|---|---|---|---|
| 2016-11-01 | F1 | R2 | 203 | 3 | 10.0 | 25.0 | 1.36 | 1.4 | 0.19 | 11.470002 |
| 2016-11-01 | F1 | R2 | 203 | 3 | 0.0 | 10.0 | 1.38 | 1.41 | 0.18 | 5.280001 |
| 2016-11-01 | F1 | R2 | 203 | 2 | 10.0 | 25.0 | 1.25 | 1.29 | 0.19 | 14.539976 |
| 2016-11-01 | F1 | R2 | 203 | 2 | 0.0 | 10.0 | 1.4 | 1.43 | 0.19 | 6.299992 |
| 2016-11-01 | F1 | R2 | 203 | 1 | 10.0 | 25.0 | 1.24 | 1.32 | 0.17 | 24.349976 |