GLBRC Sustainability Data Catalog

Agronomic Log — GLBRC Marginal Land Experiment

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Record of agronomic and sampling activities carried out on the GLBRC Marginal Land Experiment (MLE) sites in Michigan and Wisconsin.

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: September 2012 to October 2019
Dataset: GLBRC126
Datatable ID: GLBRC094-004.97
Repository link:
Related Tables:
Personnel:
Last Updated 2023-01-17
Variate Description Units
obs date date the activity occurred
observation type type of activity performed
comment aglog entry
name state, site (northern, central or southern), treatment, replicate
material material applied
rate rate the material is applied at
units rate unit
equipment equipment
observation id observation id. This can be used to retrieve the original observation at http://aglog.kbs.msu.edu/observations/

Data Excerpt

obs_date observation_type comment name material rate units equipment observation_id
2022-10-21 Harvest Harvested Lux Arbor MLE G5, G6, G7, G9, and G10 (fertilized and non-fertilized plots). Harvested with JD 6140 tractor using the 7.5 ft wide Kemper head and custom biomass weighing system. The middle 7.5' of each micro-plot were harvested. Plot weights were obtained from the on-board Mettler Toledo scale. Cutting height of plant stubble was 4-6 inches. Grab samples from each rep was placed in burlap bags, weighed for wet weight and placed in plant dryer and will be reweighed to determine percent moisture for each treatment and replication. Remaining standing crop was then harvested. MSG10R1 Kemper harvester / tractor / weigh container 5612
2022-10-21 Harvest Harvested Lux Arbor MLE G5, G6, G7, G9, and G10 (fertilized and non-fertilized plots). Harvested with JD 6140 tractor using the 7.5 ft wide Kemper head and custom biomass weighing system. The middle 7.5' of each micro-plot were harvested. Plot weights were obtained from the on-board Mettler Toledo scale. Cutting height of plant stubble was 4-6 inches. Grab samples from each rep was placed in burlap bags, weighed for wet weight and placed in plant dryer and will be reweighed to determine percent moisture for each treatment and replication. Remaining standing crop was then harvested. MSG10R1 5612
2022-10-21 Harvest Harvested Lux Arbor MLE G5, G6, G7, G9, and G10 (fertilized and non-fertilized plots). Harvested with JD 6140 tractor using the 7.5 ft wide Kemper head and custom biomass weighing system. The middle 7.5' of each micro-plot were harvested. Plot weights were obtained from the on-board Mettler Toledo scale. Cutting height of plant stubble was 4-6 inches. Grab samples from each rep was placed in burlap bags, weighed for wet weight and placed in plant dryer and will be reweighed to determine percent moisture for each treatment and replication. Remaining standing crop was then harvested. MSG10R2 5612
2022-10-21 Harvest Harvested Lux Arbor MLE G5, G6, G7, G9, and G10 (fertilized and non-fertilized plots). Harvested with JD 6140 tractor using the 7.5 ft wide Kemper head and custom biomass weighing system. The middle 7.5' of each micro-plot were harvested. Plot weights were obtained from the on-board Mettler Toledo scale. Cutting height of plant stubble was 4-6 inches. Grab samples from each rep was placed in burlap bags, weighed for wet weight and placed in plant dryer and will be reweighed to determine percent moisture for each treatment and replication. Remaining standing crop was then harvested. MSG10R2 Kemper harvester / tractor / weigh container 5612
2022-10-21 Harvest Harvested Lux Arbor MLE G5, G6, G7, G9, and G10 (fertilized and non-fertilized plots). Harvested with JD 6140 tractor using the 7.5 ft wide Kemper head and custom biomass weighing system. The middle 7.5' of each micro-plot were harvested. Plot weights were obtained from the on-board Mettler Toledo scale. Cutting height of plant stubble was 4-6 inches. Grab samples from each rep was placed in burlap bags, weighed for wet weight and placed in plant dryer and will be reweighed to determine percent moisture for each treatment and replication. Remaining standing crop was then harvested. MSG10R3 Kemper harvester / tractor / weigh container 5612
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