GLBRC Sustainability Data Catalog

Production and Total Carbon and Nitrogen of Perennial Fine Roots by Ingrowth Cores — GLBRC Biofuel Cropping System Experiment

Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use

Fine root production and total carbon and nitrogen content of BCSE perennial treatments (G5-G10) by the ingrowth core method. Two ingrowth cores were buried vertically to a depth of 15 cm at the beginning of the growing season at each sampling station (S1-S3); one was collected mid-season and the other at the end of the season to determine an approximate peak standing biomass or belowground net primary production (BNPP). This datatable contains the biomass and total carbon and nitrogen content of the roots produced, as well as C and N stocks on an areal basis. KBS data are averaged by replicate in this table because KBS root samples were composited by replicate for CN analysis. Biomass data by station are available for both KBS and Arlington at: http://data.sustainability.glbrc.org/datatables/302

This datatable is part of the Roots of the Biofuel Cropping System Experiment dataset.

Different sampling methods are used to measure root production in the diverse cropping systems of the GLBRC Biofuel Cropping System Experiment (BCSE). For annual crop treatments (G1-G4), root biomass is sampled by excavating a single plant (KBS) or a known soil area (Arlington). For perennial crop treatments (G5-G10), root biomass is sampled from ~1 m deep cores and fine root production is estimated from ingrowth cores buried at the beginning of the growing season. In general, root sampling occurs around three sampling stations (S1-S3) in each replicate block (R1-R5) and at peak biomass, which means physiological maturity for annuals and pre-senescence for perennials. Roots may be analyzed for total carbon and nitrogen content.

Note

Experiment: GLBRC Biofuel Cropping System Experiment
Data available from: January 2008 to January 2013
Dataset: GLBRC089
Datatable ID: GLBRC089-006.79
Repository link:
Related Tables:
Personnel:
Last Updated 2023-10-24
Variate Description Units
year year of growing season
date installed The date that the root ingrowth core was installed.
sample date The date that the root ingrowth core was removed.
site experiment location
treatment experiment treatment
replicate replicate nested within treatment
station sampling location
core area area of the root core tube
plants crop plants
depth bottom Lower depth of the root core. Upper core area is at surface.
biomass g m2 root biomass to given depth g/m2
wi plot id plot identifier used only by Arlington site
campaign distinct research activity
comment notes about the data row
percent nitrogen root nitrogen as percent %
percent carbon root carbon as percent %
n g m2 Percent nitrogen X BNPP in g/m2. Data at KBS are averaged by replicate; Arlington has CN data and BNPP for each station. g/m2
c g m2 percent carbon X BNPP in g/m2. Data at KBS are averaged by station; Arlington has CN data and BNPP for each station. g/m2

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Data Excerpt

year date_installed sample_date site treatment replicate station core_area plants depth_bottom biomass_g_m2 wi_plot_id campaign comments percent_nitrogen percent_carbon n_g_m2 c_g_m2
2008 2008-08-25 2008-08-25 Arlington GLBRC Intensive Site G10 R1 S1 19.63 native prairie 15.0 45.84 105 mid-season soil core assay of fine root biomass
2008 2008-08-25 2008-08-25 Arlington GLBRC Intensive Site G10 R2 S1 19.63 native prairie 15.0 779.22 208 mid-season soil core assay of fine root biomass
2008 2008-08-25 2008-08-25 Arlington GLBRC Intensive Site G10 R3 S1 19.63 native prairie 15.0 81.49 306 mid-season soil core assay of fine root biomass
2008 2008-08-25 2008-08-25 Arlington GLBRC Intensive Site G5 R1 S1 19.63 Panicum virgatum L. 15.0 183.35 112 mid-season soil core assay of fine root biomass
2008 2008-08-25 2008-08-25 Arlington GLBRC Intensive Site G5 R2 S1 19.63 Panicum virgatum L. 15.0 173.16 206 mid-season soil core assay of fine root biomass
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