Soil Total Carbon and Nitrogen — Switchgrass Nitrogen Rate 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Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use
Soil total carbon and nitrogen in surface (0-25 cm) and deep (0-1 m) core samples from the Switchgrass Nitrogen Rate Experiment. Deep core samples were collected in 2013 for Leilei Ruan, 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: | Switchgrass Nitrogen Rate Experiment |
| Data available from: | May 2013 to November 2015 |
| Dataset: | GLBRC132 |
| Datatable ID: | GLBRC132-003.126 |
| Core Areas | Organic Matter |
| Repository link: | |
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| Last Updated | 2023-10-24 |
| Variate | Description | Units |
|---|---|---|
| sample date | date when the sample was taken from the field | |
| treatment | the treatment name | |
| replicate | the replicate name | |
| sub plot | the sub plot sampled (H1 = one harvest, H2 = 2 harvests per year until 2012) | |
| top depth cm | the top depth of the soil core taken | |
| bottom depth cm | the bottom depth of the soil core taken | |
| nitrogen percent | the percent total N by weight | |
| carbon percent | the percent total C by weight | |
| internal plot name | the internal name of the sample. |
GLBRC data is not yet publicly available.
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| sample_date | treatment | replicate | sub_plot | top_depth_cm | bottom_depth_cm | nitrogen_percent | carbon_percent | internal_plot_name |
|---|---|---|---|---|---|---|---|---|
| 2015-11-18 | SWF1 | R1 | H1 | 0 | 25 | 0.09 | 0.93 | SWF1108H1025 |
| 2015-11-18 | SWF1 | R1 | H2 | 0 | 25 | 0.12 | 1.03 | SWF1108H2025 |
| 2015-11-18 | SWF1 | R2 | H1 | 0 | 25 | 0.15 | 1.05 | SWF1201H1025 |
| 2015-11-18 | SWF1 | R2 | H2 | 0 | 25 | 0.06 | 0.76 | SWF1201H2025 |
| 2015-11-18 | SWF1 | R3 | H1 | 0 | 25 | 0.07 | 0.83 | SWF1307H1025 |