GLBRC Sustainability Data Catalog

Soil Bulk Density of Deep Cores — GLBRC 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Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use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 bulk density of deep (0-1 m) cores collected from the Switchgrass Nitrogen Rate Experiment in 2013 for Leilei Ruan. Cores were 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: GLBRC Switchgrass Nitrogen Rate Experiment
Data available from: May 2013
Dataset: GLBRC132
Datatable ID: GLBRC093-006.126
Core Areas Disturbance
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Last Updated 2023-10-24
Variate Description Units
sample date
site
experiment
treatment nitrogen rate treatment
plot experimental plot
harvest scheme H1: one harvest per growing season; H2: two harvests per growing season
top depth top depth of core section cm
bottom depth bottom depth of core section cm
core diameter cm
actual top depth cm
actual bottom depth cm
bulk density gravel free
total bulk density
capmaign
core length cm
rocks greater than 4 mm

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Data Excerpt

sample_date site experiment treatment plot harvest_scheme top_depth bottom_depth core_diameter actual_top_depth_cm actual_bottom_depth_cm bulk_density_gravel_free total_bulk_density campaign core_length_cm rocks_greater_than_4_mm
2013-05-14 KBS GLBRC Intensive Site Switchgrass Nitrogen Rate Experiment SWF5 101 H1 0.0 10.0 7.6 0.0 10.0 1.18 1.22 deep core sampling 10.0 18.63
2013-05-14 KBS GLBRC Intensive Site Switchgrass Nitrogen Rate Experiment SWF5 101 H1 10.0 25.0 7.6 10.0 25.0 1.49 1.67 deep core sampling 15.0 119.97
2013-05-14 KBS GLBRC Intensive Site Switchgrass Nitrogen Rate Experiment SWF5 101 H1 25.0 50.0 7.6 25.0 50.0 1.61 1.66 deep core sampling 25.0 61.94
2013-05-14 KBS GLBRC Intensive Site Switchgrass Nitrogen Rate Experiment SWF5 101 H1 50.0 100.0 7.6 50.0 94.0 1.44 1.68 deep core sampling 44.0 480.27
2013-05-14 KBS GLBRC Intensive Site Switchgrass Nitrogen Rate Experiment SWF3 102 H1 0.0 10.0 7.6 0.0 10.0 1.34 1.36 deep core sampling 10.0 10.28
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