Switchgrass Stand Counts — Switchgrass Nitrogen Rate Experiment
Stand counts of switchgrass populations in the GLBRC Switchgrass Nitrogen Rate Experiment (formerly Nitrogen/Harvest) periodically conducted in the spring to assess growth and recruitment. Counts are reported in number of plants per square meter.
This datatable is part of the Switchgrass Nitrogen Rate Experiment dataset. Data from the Switchgrass Nitrogen Rate Experiment (formerly Nitrogen/Harvest) at the KBS GLBRC Intensive Field Site. Switchgrass is grown under 8 rates of nitrogen fertilization (F1-F8; 0-196 kg N/ha) with each treatment plot replicated in four blocks (R1-R4). From 2010–2012, the experiment also included split plots with two harvest strategies (H1, H2; 1 vs 2 harvests/yr) for each nitrogen treatment; since 2013 all split plots are harvested only once in the fall with yields measured separately.
See the Switchgrass Nitrogen Rate Experiment map for further details.
|Experiment:||Switchgrass Nitrogen Rate Experiment|
|Data available from:||January 2019 to December 2020|
|sample date||date sampled|
|n kg ha||annual N fertilization rate||kg/ha|
|average stand count m2||number of plants per meter squared as estimated with the Vogel and Masters 2001 grid method||number/metersquared|
|Stand Counts, Perennials|
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|2020||2020-05-21||KBS GLBRC Intensive Site||Switchgrass Nitrogen Experiment||101||SWF5||112||11.5|
|2020||2020-05-21||KBS GLBRC Intensive Site||Switchgrass Nitrogen Experiment||102||SWF3||56||10.6|
|2020||2020-05-21||KBS GLBRC Intensive Site||Switchgrass Nitrogen Experiment||103||SWF8||196||8.2|
|2020||2020-05-21||KBS GLBRC Intensive Site||Switchgrass Nitrogen Experiment||104||SWF2||28||12.3|
|2020||2020-05-21||KBS GLBRC Intensive Site||Switchgrass Nitrogen Experiment||105||SWF4||84||9.6|