GLBRC Sustainability Data Catalog

Peak Biomass — 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Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use

Peak plant biomass is measured annually in the fall at each site in the Marginal Land Experiment and serves as an estimate of Annual Net Primary Production (ANPP).

This datatable is part of the Cropping Systems – Marginal Land Experiment dataset. This dataset contains data on the biofuel cropping systems of 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) 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 2014 to January 2022
Dataset: GLBRC126
Datatable ID: GLBRC126-001.97
Core Areas Primary Production
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Personnel:
Last Updated 2023-01-20
Variate Description Units
year year of sampling date
site site of marginal land experiment
sample date
campaign experimental campaign
treatment treatment in MLE site
replicate nested replicates of treatment
field section field section within replicate
station
n treatment nitrogen adding or control
area sampled sampling area squaremeter
wet weight wet weight of plant sample kilogram
dry weight dry weight of plant sample kilogram
biomass crop biomass g/m2
moisture percent moisture %
comment

Data Excerpt

year site sample_date campaign treatment replicate field_section station n_treatment area_sampled wet_weight dry_weight biomass moisture comment
2021 Michigan Central - Lake City Exp. Station 2021-09-02 peak biomass G10 R1 north east plus_n 1.0 1.203 1203.0 no subsample weights taken; all materials went to oven
2020 Michigan Central - Lake City Exp. Station 2020-09-01 peak biomass G10 R1 north east plus_n 1.0 1.335 0.751413 751.413 56.285618
2019 Michigan Central - Lake City Exp. Station 2019-09-24 peak biomass G10 R1 north east plus_n 1.0 2.855 1.2667214 1266.7214 55.631474
2018 Michigan Central - Lake City Exp. Station 2018-08-28 peak biomass G10 R1 north east plus_n 1.0 0.587 0.3022092 302.2092 48.51632
2022 Michigan Central - Lake City Exp. Station 2022-08-24 peak biomass G10 R1 north east plus_n 1.0 0.5312 531.2
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