GLBRC Sustainability Data Catalog

Switchgrass Dry Matter Yield — GLBRC Marginal Land Experiment

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Dry matter yields of hand-harvested switchgrass (G5) in experimental microplots (rainout, ambient, +/- reserved) of the Marginal Land Rainfall Exclusion Experiment. Yield data are given as Mg dry matter per hectare.

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 2018 to November 2020
Dataset: GLBRC126
Datatable ID: GLBRC094-013.97
Core Areas Primary Production
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Last Updated 2023-01-13
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, irrigated, rainout, or ambient)
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
2018 2018-10-24 Michigan BCSE G5 R2 switchgrass rainout plus_n 64.0 5.376186 0.34 assumed the same moisture content as in Rep 5 rainout plot, since there was no dry weight available for the other BCSE plots in 2018
2018 2018-10-24 Michigan BCSE G5 R2 switchgrass ambient microplot plus_n 60.0 5.234903 0.34 assumed the same moisture content as in Rep 5 rainout plot, since there was no dry weight available for the other BCSE plots in 2018
2018 2018-10-24 Michigan BCSE G5 R3 switchgrass rainout plus_n 64.0 6.28523 0.34 assumed the same moisture content as in Rep 5 rainout plot, since there was no dry weight available for the other BCSE plots in 2018
2018 2018-10-24 Michigan BCSE G5 R3 switchgrass ambient microplot plus_n 60.0 6.722091 0.34 assumed the same moisture content as in Rep 5 rainout plot, since there was no dry weight available for the other BCSE plots in 2018
2018 2018-10-24 Michigan BCSE G5 R4 switchgrass rainout plus_n 64.0 5.967343 0.34 assumed the same moisture content as in Rep 5 rainout plot, since there was no dry weight available for the other BCSE plots in 2018
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