Soil Bulk Density — Resource Gradient 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Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use

Only a few bulk density samples were taken to characterize the Resource Gradient. Soil cores taken using ‘root corer’ – dimensions: 14.0 cm height x 7.9 cm diameter
On 08/21/2007 soil samples weighed using metal tins – sample dried in oven at 60 Celsius for 24 hours

This datatable is part of the Resource Gradient Experiment dataset. This study provides a gradient of 9 different rates of nitrogen fertilization under rainfed and irrigated conditions. Irrigation began in 2003. Corn was grown from 2000-2005 and subsequently the crop rotation (wheat, corn, soybean) followed the crop of the LTER main site. Nitrogen applications differ by crop after 2007.

The experiment was moved to its current location on the LTER main site in 2005. The experiment location/history are explained here.

Plots are 5×30 m arranged in each of 4 replicate blocks .

Crop yields, nitrous oxide and soil temperature, moisture and nitrogen data are available for this study.


Experiment: Resource Gradient Experiment
Data available from: August 2007 to November 2016
Dataset: KBS033
Datatable ID: KBS033-008.91
Core Areas Disturbance
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Related Tables:
Last Updated 2021-06-07
Variate Description Units
sample date date the sample was taken
treatment the treatment sampled
replicate the replicate sampled
plot the plot sampled
core The core number
top depth cm top of the depth of the sample (cm)
bottom depth cm bottom depth of the sample (cm)
gravel free bulk density bulk density of the gravel free soil fraction (gravel >4 mm removed)
total bulkt density g cm3 total bulk density (including any gravel)
moisture soil moisture at sampling (dry weight basis) g/g
gravel weight

Data Excerpt

sample_date treatment replicate plot core top_depth_cm bottom_depth_cm gravel_free_bulk_density_g_cm3 total_bulk_density_g_cm3 moisture gravel_weight
2016-11-01 F1 R2 203 3 10.0 25.0 1.36 1.4 0.19 11.470002
2016-11-01 F1 R2 203 3 0.0 10.0 1.38 1.41 0.18 5.280001
2016-11-01 F1 R2 203 2 10.0 25.0 1.25 1.29 0.19 14.539976
2016-11-01 F1 R2 203 2 0.0 10.0 1.4 1.43 0.19 6.299992
2016-11-01 F1 R2 203 1 10.0 25.0 1.24 1.32 0.17 24.349976
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