Switchgrass Dry Matter Yield — GLBRC Marginal Land Experiment
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.
|Experiment:||GLBRC Marginal Land Experiment|
|Data available from:||January 2018 to November 2020|
|Core Areas||Primary Production|
|year||year of the growing season|
|harvest date||date of harvest or G11 sampling|
|replicate||replicate nested within treatment|
|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|
|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|