Plant Population (Stem Counts) — GLBRC Biofuel Cropping System Experiment

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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 KBS GLBRC Annual Net Primary Productivity dataset.

This dataset contains the aboveground annual net primary production (ANPP) data on the KBS Great Lakes Bioenergy Research Center (GLBRC) intensive sites and GLBRC scale-up fields. This dataset contains the aboveground annual net primary production (ANPP) data. ANPP 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: January 2009 to January 2022
Dataset: KBS063
Datatable ID: KBS063-12.99
Repository link:
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Last Updated 2023-10-24
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
sample area m2 area sampled
annual crop main crop in given year
comments sample notes
Protocols

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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 comments
2022 peak biomass 2022-10-13 KBS GLBRC Intensive Site G1 Continuous Corn R1 S1 Zea mays L. (*) 8 1.0
2022 peak biomass 2022-10-13 KBS GLBRC Intensive Site G1 Continuous Corn R1 S2 Zea mays L. (*) 8 1.0
2022 peak biomass 2022-10-13 KBS GLBRC Intensive Site G1 Continuous Corn R1 S3 Zea mays L. (*) 9 1.0
2022 peak biomass 2022-10-13 KBS GLBRC Intensive Site G1 Continuous Corn R2 S1 Zea mays L. (*) 8 1.0
2022 peak biomass 2022-10-13 KBS GLBRC Intensive Site G1 Continuous Corn R2 S2 Zea mays L. (*) 11 1.0
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