GLBRC Sustainability Data Catalog

Soil Total Carbon and Nitrogen — GLBRC Marginal Land Experiment

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Total carbon and nitrogen content of deep core soil samples (1 meter deep core split in 4 depths) from the Marginal Land Experiment.

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.
Seasonal deployment of rainfall exclusion (rainout) shelters in the fertilized split plot of the switchgrass (G5) treatment began in 2018 to examine the effects of drought on plant growth. See the Marginal Land Rainfall Exclusion Experiment for these data.
Note that Block 1 at the Wisconsin Central – Hancock site was retired in 2015 and the entire Wisconsin South – Oregon site was retired after 2018 growing season when the maintenance, harvest, sampling and analysis of the remaining Wisconsin sites was transferred from UW staff to MSU staff.

Note

Experiment: GLBRC Marginal Land Experiment
Data available from: January 2013
Dataset: GLBRC094
Datatable ID: GLBRC094-005.257
Repository link:
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Last Updated 2023-01-13
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
experiment GLBRC experiment
campaign sampling intent
actual top depth cm actual upper soil sampling depth centimeter
actual bottom depth cm actual lower soil sampling depth centimeter
nominal top depth cm nominal upper soil sampling depth centimeter
nominal bottom depth cm nominal lower soil sampling depth centimeter
nitrogen percent percent total nitrogen content in soil %
carbon percent percent total carbon content in soil %
wi plot id Wisconsin plot identifier
comments notes
field section section of the field sampled

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Data Excerpt

year sample_date site treatment replicate experiment campaign actual_top_depth_cm actual_bottom_depth_cm nominal_top_depth_cm nominal_bottom_depth_cm nitrogen_percent carbon_percent wi_plot_id comments field_section
2013 2013-11-25 Michigan Central - Lake City Exp. Station G10 R1 GLBRC Marginal Land Experiment deep core sampling 0.0 10.0 0.0 10.0 0.1432 1.6126 entire plot
2013 2013-11-25 Michigan Central - Lake City Exp. Station G10 R1 GLBRC Marginal Land Experiment deep core sampling 25.0 50.0 25.0 50.0 0.025 0.2918 entire plot
2013 2013-11-25 Michigan Central - Lake City Exp. Station G10 R1 GLBRC Marginal Land Experiment deep core sampling 10.0 25.0 10.0 25.0 0.0644 0.7596 entire plot
2013 2013-11-25 Michigan Central - Lake City Exp. Station G10 R1 GLBRC Marginal Land Experiment deep core sampling 50.0 84.0 50.0 100.0 0.0277 0.3008 entire plot
2013 2013-11-25 Michigan Central - Lake City Exp. Station G10 R2 GLBRC Marginal Land Experiment deep core sampling 25.0 50.0 25.0 50.0 0.0198 0.214 entire plot
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