GLBRC Sustainability Data Catalog

Agronomic Soil Chemistry — GLBRC Marginal Land 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Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use

Deep core (to 1 m) and surface (typically 0-25 cm) soil samples are taken periodically and sent to an analytical laboratory for fertilizer/liming recommendations and analyzed for pH, lime index, phosphorus, potassium, calcium, magnesium, cation exchange capacity and, depending on laboratory, organic matter.

From 2012-2022, samples were analyzed by either the Michigan State University Soil and Plant Nutrient Laboratory or the University of Wisconsin Soils Laboratory, which included organic matter in their analyses.

This datatable is part of the Soil Properties — Marginal Land Experiment dataset.

This dataset contains soil data for the GLBRC Marginal Land Experiment (MLE) originally established in 2013 at north, central and south sites in Wisconsin and Michigan. The experiment consists of six different biofuel cropping systems (a.k.a. treatments; G5-G10; including switchgrass, miscanthus, native grasses, hybrid poplar, early successional, and restored prairie, respectively) plus an historical vegetation control (G11), replicated in each of 4 blocks (R1-R4) at each site. Split-plot treatments were initiated in 2014-2016 to examine the effect of nitrogen fertilization [plus_n (+N) vs control (0N)] on all cropping systems.


Experiment: GLBRC Marginal Land Experiment
Data available from: January 2012 to January 2018
Dataset: GLBRC094
Datatable ID: GLBRC094-003.286
Repository link:
Related Tables:
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Last Updated 2023-11-08
Variate Description Units
year year soil sample was collected
sample date date of soil coring
site Wisconsin or Michigan sampling site
treatment experimental treatment
replicate replicate nested within treatment
campaign sampling intent
top depth cm upper soil sampling depth
bottom depth cm lower soil sampling depth
ph pH of soil solution
lime index indicator of potential acidity
p ppm phosphorus in soil mg/kg
k ppm potassium in soil mg/kg
ca ppm calcium in soil mg/kg
mg ppm magnesium ppm in soil mg/kg
field section section of the field sampled
n treatment nitrogen treatment of given split plot
est cec Cation exchange capacity in meq/100g soil meq/100g
om percent organic matter percent %
wi plot id Arlington Wisconsin site's plot identifier
lab the lab where the analysis was perfomed
comments notes

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Data Excerpt

sample_date site treatment replicate wi_plot_id top_depth bottom_depth ph lime_index p_ppm k_ppm ca_ppm mg_ppm est_cec om_percent zn_ppm s_ppm b_ppm main_or_microplot comments lab
2022-11-16 KBS GLBRC Intensive Site G1 R1 0 25 5.4 44.0 163.0 450.0 70.0 5.7 main A&L Great Lakes Laboratories, Inc
2022-11-16 KBS GLBRC Intensive Site G1 R2 0 25 6.3 18.0 112.0 700.0 130.0 6.1 main A&L Great Lakes Laboratories, Inc
2022-11-16 KBS GLBRC Intensive Site G1 R3 0 25 6.5 16.0 110.0 650.0 125.0 5.8 main A&L Great Lakes Laboratories, Inc
2022-11-16 KBS GLBRC Intensive Site G1 R4 0 25 6.6 33.0 134.0 700.0 155.0 6.3 main A&L Great Lakes Laboratories, Inc
2022-11-16 KBS GLBRC Intensive Site G1 R5 0 25 6.4 29.0 97.0 450.0 100.0 4.5 main A&L Great Lakes Laboratories, Inc
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