Dry Matter Yields — GLBRC Switchgrass Nitrogen Rate Experiment
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Dry matter yields from machine harvests (~6 inch cutting height) of the Switchgrass Nitrogen Rate Experiment recorded as Mg dry matter per hectare.
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: | November 2009 to October 2024 |
| Dataset: | GLBRC132 |
| Datatable ID: | GLBRC081-003.132 |
| Core Areas | Primary Production,Populations |
| Repository link: | |
| Related Tables: |
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| Personnel: |
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| Last Updated | 2025-01-13 |
| Variate | Description | Units |
|---|---|---|
| year | year of the growing season | |
| harvest date | date the crop was harvested | |
| treatment n rate | amount of nitrogen added to the experimental treatment | lb/ac |
| replicate | replicate nested within treatment | |
| yield tons acre | dry matter yield | |
| yield mg ha | dry matter yield | Mg/ha |
| moisture percent | crop percent moisture at harvest | % |
| harvest strategy | # of harvests per year | |
| plot | plot identifier | |
| comments | sample notes |
GLBRC data is not yet publicly available.
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| year | harvest_date | treatment_n_rate | replicate | yield_tons_acre | yield_mg_ha | moisture_percent | harvest_strategy | plot | comments |
|---|---|---|---|---|---|---|---|---|---|
| 2024 | 2024-10-30 | 0 | 1 | 1.95 | 4.36 | 28.5 | 1 harvest per year | 108 | |
| 2024 | 2024-10-30 | 0 | 2 | 1.98 | 4.45 | 26.6 | 1 harvest per year | 201 | |
| 2024 | 2024-10-30 | 0 | 3 | 1.53 | 3.42 | 28.0 | 1 harvest per year | 307 | |
| 2024 | 2024-10-30 | 0 | 4 | 1.01 | 2.26 | 30.6 | 1 harvest per year | 408 | |
| 2024 | 2024-10-30 | 25 | 1 | 2.43 | 5.45 | 33.0 | 1 harvest per year | 104 |