GLBRC Sustainability Data Catalog

Dry Matter Yield — GLBRC Marginal Land Experiment

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Dry matter yields from the Marginal Land Experiment (MLE) at sites in Michigan and Wisconsin. Yield data are for machine harvests of switchgrass, miscanthus, native grasses, early succession, and restored prairie (G5, G6, G7, G9 and G10 respectively), clear-cut harvests of poplar (G8), and hand-sampled harvest estimates of the unharvested historical vegetation reference (G11). Data are expressed as Mg dry matter per hectare.

Note: G11 was hand-harvested at 3 stations per split plot from 2015-2017 and since 2018 at 2 stations per split plot. The average harvest per split plot is given here; raw data available on request.

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 December 2022
Dataset: GLBRC126
Datatable ID: GLBRC094-002.97
Core Areas Primary Production
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Last Updated 2023-01-25
Variate Description Units
year year of the growing season
harvest date date of harvest or G11 sampling
site experiment location
treatment experimental treatment
replicate replicate nested within treatment
crop crop
field section section of the field (entire, east, west, north, south)
n treatment nitrogen experimental treatment
area harvested ft2 area harvested squarefoot
dry matter yield mg ha yield as dry matter Mg/ha
moisture at harvest percent moisture measured at harvest %
comments specific notes for a given row

Data Excerpt

year harvest_date site treatment replicate crop field_section n_treatment area_harvested_ft2 dry_matter_yield_mg_ha moisture_at_harvest comments
2014 2014-10-02 Wisconsin South - Oregon G10 R3 restored prairie entire plot control 1891.7 5.8 44.8
2014 2014-10-02 Wisconsin South - Oregon G10 R4 restored prairie entire plot control 1891.7 5.1 53.8
2014 2014-10-02 Wisconsin South - Oregon G11 R1 historical vegetation entire plot control 1887.7 0.8 28.0
2014 2014-10-02 Wisconsin South - Oregon G11 R2 historical vegetation entire plot control 1887.7 1.9 30.9
2014 2014-10-02 Wisconsin South - Oregon G11 R3 historical vegetation entire plot control 1887.7 1.4 31.6
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