Soil Bulk Density of Deep Cores — GLBRC Switchgrass Nitrogen Rate Experiment
Data in the KBS GLBRC core database may not be published without written permission of the lead investigator or project director Full terms of use
Soil bulk density of deep (0-1 m) cores collected from the Switchgrass Nitrogen Rate Experiment in 2013 for Leilei Ruan. Cores were taken from each treatment plot and sectioned into 0-10, 10-25, 25-50, and 50-100 depth intervals.
This datatable is part of the Switchgrass Nitrogen Rate Experiment dataset.
This dataset contains data from the Switchgrass Nitrogen Rate Experiment (formerly Nitrogen/Harvest) at the KBS GLBRC Intensive Field Site. Switchgrass is grown under 8 rates of nitrogen fertilization (F1-F8; 0-196 kg N/ha) with each treatment plot replicated in four blocks (R1-R4). From 2010–2012, the experiment also included split plots with two harvest strategies (H1, H2; 1 vs 2 harvests/yr) for each nitrogen treatment; from 2013 onward all split plots are harvested only once in the fall, with yields measured separately 2013-2022 and combined starting in 2023.
Note
| Experiment: | GLBRC Switchgrass Nitrogen Rate Experiment |
| Data available from: | May 2013 to December 2024 |
| Dataset: | GLBRC132 |
| Datatable ID: | GLBRC093-006.140 |
| Core Areas | Disturbance |
| Repository link: | |
| Related Tables: |
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| Personnel: |
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| Last Updated | 2026-01-16 |
| Variate | Description | Units |
|---|---|---|
| sample date | ||
| site | ||
| experiment | ||
| treatment | nitrogen rate treatment | |
| plot | experimental plot | |
| harvest scheme | H1: one harvest per growing season; H2: two harvests per growing season | |
| top depth | top depth of core section | cm |
| bottom depth | bottom depth of core section | cm |
| core diameter | cm | |
| actual top depth | cm | |
| actual bottom depth | cm | |
| bulk density gravel free | ||
| total bulk density | ||
| capmaign | ||
| core length | cm | |
| rocks greater than 4 mm | ||
| core |
GLBRC data is not yet publicly available.
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| sample_date | experiment | site | treatment | plot_id | harvest_scheme | top_depth | bottom_depth | core_diameter | actual_top_depth_cm | actual_bottom_depth_cm | bulk_density_gravel_free | total_bulk_density | campaign | core_length_cm | rocks_greater_than_4_mm | core |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2013-05-14 | Switchgrass Nitrogen Rate Experiment | KBS GLBRC Intensive Site | 5 | 101 | H1 | 0.0 | 10.0 | 7.6 | 0.0 | 10.0 | 1.1803479044287601 | 1.2211998769255328 | deep core sampling | 10.0 | 18.63 | |
| 2013-05-14 | Switchgrass Nitrogen Rate Experiment | KBS GLBRC Intensive Site | 5 | 101 | H1 | 10.0 | 25.0 | 7.6 | 10.0 | 25.0 | 1.492075718464878 | 1.6674563282497348 | deep core sampling | 15.0 | 119.97 | |
| 2013-05-14 | Switchgrass Nitrogen Rate Experiment | KBS GLBRC Intensive Site | 5 | 101 | H1 | 25.0 | 50.0 | 7.6 | 25.0 | 50.0 | 1.6089353111732698 | 1.6632642682629124 | deep core sampling | 25.0 | 61.94 | |
| 2013-05-14 | Switchgrass Nitrogen Rate Experiment | KBS GLBRC Intensive Site | 5 | 101 | H1 | 50.0 | 100.0 | 7.6 | 50.0 | 94.0 | 1.4405657793833408 | 1.67991551869707 | deep core sampling | 44.0 | 480.27 | |
| 2013-05-14 | Switchgrass Nitrogen Rate Experiment | KBS GLBRC Intensive Site | 3 | 102 | H1 | 0.0 | 10.0 | 7.6 | 0.0 | 10.0 | 1.3417164849997478 | 1.364258528868069 | deep core sampling | 10.0 | 10.28 |