GLBRC Sustainability Data Catalog

Soil Water Chemistry — Switchgrass Nitrogen Rate Experiment

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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 (formerly Nitrogen/Harvest) and analyzed for a range of chemical parameters.

This datatable is part of the Switchgrass Nitrogen Rate Experiment dataset. 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.

See the Switchgrass Nitrogen Rate Experiment map for further details.

Note

Experiment: Switchgrass Nitrogen Rate Experiment
Data available from: June 2009 to December 2021
Dataset: GLBRC132
Datatable ID: GLBRC088-027.60
Repository link:
Related Tables:
Personnel:
Last Updated 2023-01-23
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)

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Data Excerpt

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
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