Deep core CN comparison — 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Data in the KBS GLBRC core database may not be published without written permission of the lead investigator or project director Full terms of use
Deep core samples were taken from every plot in 2013 and 2024. This datatable is a complication of the deep core CN data from https://data.sustainability.glbrc.org/datatables/723 and https://data.sustainability.glbrc.org/datatables/734
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 November 2024 |
| Dataset: | GLBRC132 |
| Datatable ID: | GLBRC132-007.152 |
| Core Areas | Organic Matter,Inorganic Nutrients |
| Repository link: | |
| Related Tables: |
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| Personnel: |
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| Last Updated | 2026-02-10 |
| Variate | Description | Units |
|---|---|---|
| experiment | the experiment name | |
| sample date | the date the sample was removed from the field | |
| treatment | the treatment | |
| replicate | the replicate | |
| top depth cm | the top depth of the soil core section. Or the average top depth when there were more than one core sampled. | cm |
| core length cm | the average core length of the sections at this depth. | cm |
| bottom depth cm | the average bottom depth of the core section(s). | cm |
| core diameter cm | the diameter of the core | cm |
| bulk density gravel free | the average gravel free bulk density of this core section. | |
| total bulk density | the average total bulk density for this core sections(s). | |
| carbon percent | the percent carbon in the sample | % |
| nitrogen percent | the percent nitrogen in the sample | % |
| sample name | internal sample name or barcode |
GLBRC data is not yet publicly available.
Sign in to request the dataData Excerpt
| experiment | sample_date | treatment | replicate | top_depth_cm | core_length_cm | bottom_depth_cm | core_diameter_cm | bulk_density_gravel_free | total_bulk_density | carbon_percent | nitrogen_percent | internal_plot_name |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Switchgrass Nitrogen Rate Experiment | 2024-11-08 | SWF1 | R4 | 25.0 | 25.0 | 50.0 | 7.6 | 1.567 | 1.724 | 0.2546 | 0.0262 | KBSN62UZrYUF7H64tlxE7pwU4TKSBATBDDO |
| Switchgrass Nitrogen Rate Experiment | 2024-11-08 | SWF1 | R4 | 50.0 | 50.0 | 100.0 | 7.6 | 1.587 | 1.725 | 0.1939 | 0.0219 | KBSY_bXrHuRO2F4SrgRDkb5Sz3tr84Xk4av |
| Switchgrass Nitrogen Rate Experiment | 2024-11-08 | SWF1 | R4 | 0.0 | 10.0 | 10.0 | 7.6 | 1.084 | 1.107 | 1.2358 | 0.1239 | KBSYPWAWHkLLCGLD5K3UFIclnW5fJs9yZNS |
| Switchgrass Nitrogen Rate Experiment | 2024-11-08 | SWF1 | R4 | 10.0 | 15.0 | 25.0 | 7.6 | 1.65 | 1.725 | 0.5655 | 0.0537 | KBSFpGgCuL-v1casWqv1EyHiCaxl2yxze8f |
| Switchgrass Nitrogen Rate Experiment | 2024-11-08 | SWF2 | R2 | 0.0 | 10.0 | 10.0 | 7.6 | 0.88 | 0.911 | 2.5607 | 0.2315 | KBSBxXRftGPbohuGkXhjaTRZkMPBdK_m8_R |