Soil Water Chemistry — 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Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use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 water (leachate) samples collected biweekly throughout the growing season from low-tension soil water samplers (also called suction lysimeters) buried ~1.2 meters deep in replicates R2-R4 of the Switchgrass Nitrogen Rate Experiment and analyzed for a range of chemical parameters.
data collection ceased after the 2021 season
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: | June 2009 to December 2021 |
| Dataset: | GLBRC132 |
| Datatable ID: | GLBRC088-027.126 |
| Repository link: | |
| Related Tables: |
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| Personnel: |
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| Last Updated | 2023-12-05 |
| Variate | Description | Units |
|---|---|---|
| sample date | sampling date | |
| comments | ||
| experiment | ||
| replicate | block of the experiment | |
| plot | sampled plot | |
| harvest scheme | ||
| NO3-N | NO3-N | mg/L |
| Cl | Cl | mg/L |
| SO4 | SO4 | mg/L |
| Cnd-L | Specific Conductance Lab | µS/cm |
| TDP | TDP | mg/L |
| pH-lab | pH measured in lab | |
| Ca-IC | Ca measured by ion chromotagraphy | mg/L |
| Mg-IC | Mg measured by ion chromotagraphy | mg/L |
| Na-IC | Na measured by ion chromotagraphy | mg/L |
| K-IC | K measured by ion chromotagraphy | mg/L |
| longitude | longitude of lysimeter location (SRID 4326) | |
| latitude | latitude of lysimeter location (SRID 4326) |
GLBRC data is not yet publicly available.
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| sample_date | comments | site | replicate | plot | harvest_scheme | NO3-N | Cl | SO4 | Cnd-L | TDP | pH - lab | Ca-IC | Mg-IC | Na-IC | K-IC | longitude | latitude |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2009-06-19 | soil water samplers | GLBRC Switchgrass Fertility/Harvest Trial | 4 | 408 | H2 | 4.944404 | 2.1404083 | 13.072335 | 210.0 | 8.378321 | 6.77 | 25.947613 | 5.290171 | 10.443807 | 1.7317835 | -85.370860418 | 42.393741149 |
| 2009-06-19 | soil water samplers | GLBRC Switchgrass Fertility/Harvest Trial | 4 | 407 | H2 | 10.4583845 | 1.9974751 | 19.296999 | 264.0 | 5.532853 | 6.78 | 34.297493 | 7.1583977 | 7.845037 | 1.0279877 | -85.370909624 | 42.393740691 |
| 2009-06-19 | soil water samplers | GLBRC Switchgrass Fertility/Harvest Trial | 4. | 406 | H2 | 9.145508 | 1.9744978 | 11.89244 | 189.1 | 9.168728 | 6.64 | 24.510366 | 4.6999364 | 5.4099927 | 1.6050361 | -85.370967405 | 42.393743335 |
| 2009-06-19 | soil water samplers | GLBRC Switchgrass Fertility/Harvest Trial | 4 | 405 | H2 | 5.399599 | 6.193739 | 26.723125 | 398.0 | 26.241531 | 7.09 | 44.03379 | 13.892035 | 20.330872 | 3.6264212 | -85.371026202 | 42.393742189 |
| 2009-06-19 | soil water samplers | GLBRC Switchgrass Fertility/Harvest Trial | 4 | 404 | H2 | 12.54686 | 1.7598586 | 12.367838 | 266.0 | 15.491988 | 6.81 | 30.326416 | 8.2888155 | 9.884716 | 2.304965 | -85.371079999 | 42.393741146 |