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:||January 2009 to October 2017|
|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|
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|2017||2017-10-09||0||1||3.83||8.59||30.5||1 harvest per year||108||This plot was harvested 2x/year through 2012|
|2017||2017-10-09||0||1||3.48||7.80||33.4||1 harvest per year||108|
|2017||2017-10-09||0||2||3.26||7.30||32.6||1 harvest per year||201|
|2017||2017-10-09||0||2||2.76||6.18||34.5||1 harvest per year||201||This plot was harvested 2x/year through 2012|
|2017||2017-10-09||0||3||3.61||8.08||29.0||1 harvest per year||307|