GLBRC Sustainability Data Catalog

Plant Population (Stem Counts)

Annual crop stem counts, also referred to as plant population, are measured by counting the number of plants in a quadrat.

This datatable is part of the GLBRC Annual Net Primary Productivity dataset. This dataset contains the aboveground biomass data. Annual net primary production (ANPP) data is measured at peak biomass for a given treatment. Additional ANPP measurements are made where appropriate such as occasional destructive harvests for poplar. See the ANPP protocols for descriptions of the sampling and measurement methods for each of the treatments. Below ground net primary production (BNPP) are available for these same sites.

Note

Experiment: GLBRC Biofuel Cropping System Experiment
Data available from: October 2008 to November 2015
Dataset: GLBRC082
Datatable ID: GLBRC082-012.57
Related Tables:
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Last Updated 2017-01-26
Variate Description Units
year growing season year
campaign sampling effort with which the sample is associated
sample date date stems were counted
site location of count
treatment name description of treatment (note that some treatments changed over time)
treatment experimental treatment
replicate replicate nested within treatment
station sampling location
species plant species
plant population m2 number of plants in meter2 quadrat squaremeter
sample area m2 area sampled squaremeter
annual crop main crop in given year
wi plot id Arlington Wisconsin plot code
comments sample notes

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Data Excerpt

year campaign sample_date site treatment treatment_name replicate station species plant_population_m2 sample_area_m2 annual_crop wi_plot_id comments
2015 stem count - harvest efficiency 2015-11-03 KBS GLBRC Intensive Site G1 Continuous Corn R1 S1 Zea mays L. (*) 7 1 corn
2015 stem count - peak biomass 2015-09-21 KBS GLBRC Intensive Site G1 Continuous Corn R1 S1 Zea mays L. (*) 8 1 corn
2015 stem count - harvest efficiency 2015-11-03 KBS GLBRC Intensive Site G1 Continuous Corn R1 S2 Zea mays L. (*) 9 1 corn
2015 stem count - peak biomass 2015-09-21 KBS GLBRC Intensive Site G1 Continuous Corn R1 S2 Zea mays L. (*) 7 1 corn
2015 stem count - harvest efficiency 2015-11-03 KBS GLBRC Intensive Site G1 Continuous Corn R1 S3 Zea mays L. (*) 5 1 corn
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