GLBRC Sustainability Data Catalog

Agronomic Yield in Switchgrass Nitrogen-Rate/Harvest Experiment

Agronomic yield record for the Switchgrass Nitrogen Experiment on the KBS GLBRC Intensive Site.

From 2010 – 2012 a harvest experiment was carried as part of this experiment. One half of each plot was harvested in the summer and the fall (2 harvest strategy) and the other half of the plot was harvested in the fall only (one harvest strategy). See Switchgrass Nitrogen/Harvest Experiment map for the plot details.

As of May 2013, half of the plots (plots previously with 2 harvest strategy) are separated by a one-half meter deep aluminum barrier. See Switchgrass Nitrogen Experiment map for the details.

This datatable is part of the GLBRC Agronomic Yields dataset. This data set contains information about agronomic yields for the GLBRC Biofuel Cropping System Experiment, the Stover Removal Experiment and the Unfertilized/fertilized Experiment at Kellogg Biological Station and Arlington and also for the GLBRC Scale-up experiment and Switchgrass N-rate experiments at KBS. Perennial treatments include herbaceous perennials- switchgrass, miscanthus, grass mix, old field and prairie (G5,G6, G7, G9 and G10) and poplar trees (G8) . Annual treatments include continuous corn (G1), and during 2008-2011 corn-soybean–canola rotations (G2-G4). In 2012 ,G2-G4 treatments no longer planted canola and added cover crops to a corn-soy rotation. Agronomic yields are measured during normal crop harvest by machine harvesters appropriate to each crop as described in the GLBRC Agronomic Protocol.


Experiment: Switchgrass Nitrogen Rate Experiment
Data available from: November 2009 to November 2015
Dataset: GLBRC081
Datatable ID: GLBRC081-003.66
Related Tables:
Last Updated 2017-10-24
Variate Description Units
year year of the growing season
harvest date date the crop was harvested
treatment n rate amount of nitrogen added to the experimental treatment lb/ac
replicate replicate nested within treatment
yield tons acre dry matter yield tons/acre
yield mg ha dry matter yield Mg/ha
moisture percent crop percent moisture at harvest %
harvest strategy # of harvests per year
plot plot identifier
comments sample notes

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Data Excerpt

year harvest_date treatment_n_rate replicate yield_tons_acre yield_mg_ha moisture_percent harvest_strategy plot comments
2016 2016-11-07 0 1 4.09 9.17 40.5 1 harvest per year 108 This plot was harvested 2x/year through 2012
2016 2016-11-07 0 1 3.84 8.61 39.9 1 harvest per year 108
2016 2016-11-07 0 2 3.86 8.66 39.1 1 harvest per year 201
2016 2016-11-07 0 2 2.80 6.27 34.5 1 harvest per year 201 This plot was harvested 2x/year through 2012
2016 2016-11-07 0 3 4.05 9.08 37.1 1 harvest per year 307
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