Plant Total Carbon and Nitrogen — Switchgrass Nitrogen Rate Experiment
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Total carbon and nitrogen content in the switchgrass crop of the Switchgrass Nitrogen Rate Experiment. A subsample of the machine harvested crop is dried, ground, and analyzed for carbon and nitrogen content, reported as a percentage; the remaining subsample is archived.
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: | November 2010 to November 2015 |
| Dataset: | GLBRC132 |
| Datatable ID: | GLBRC091-002.126 |
| Repository link: | |
| Related Tables: |
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| Personnel: |
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| Last Updated | 2023-10-24 |
| Variate | Description | Units |
|---|---|---|
| sample date | date sampled | |
| plot | plot identifier | |
| replicate | replicate block | |
| number harvests year | number of harvests per year | |
| treatment n rate | nitrogen fertilization rate of treatment: corresponds to treatment_name. | lb/ac |
| percent carbon | percent carbon of switchgrass | % |
| percent nitrogen | percent carbon of switchgrass | % |
GLBRC data is not yet publicly available.
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| sample_date | plot | replicate | number_harvests_year | treatment_n_rate | percent_carbon | percent_nitrogen |
|---|---|---|---|---|---|---|
| 2019-11-04 | 101 | R1 | H1 | SWF5 | 46.7913 | 0.7536 |
| 2019-11-04 | 102 | R1 | H1 | SWF3 | 46.641 | 0.6747 |
| 2019-11-04 | 103 | R1 | H1 | SWF8 | 47.1552 | 0.7966 |
| 2019-11-04 | 104 | R1 | H1 | SWF2 | 46.383 | 0.5666 |
| 2019-11-04 | 105 | R1 | H1 | SWF4 | 46.5098 | 0.722 |