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Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use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: |
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| 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. | cm |
| 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 |
GLBRC data is not yet publicly available.
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| 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 |