Soil Inorganic Nitrogen- Switchgrass Nitrogen/Harvest Experiment

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Soil extractable nitrogen from the Switchgrass Nitrogen/Harvest Experiment.

This datatable is part of the GLBRC soil properties dataset. Soil measurements from GLBRC experiments.

Experiment:	Switchgrass Nitrogen Rate Experiment
Data available from:	June 2009 to November 2010
Dataset:	GLBRC088
Datatable ID:	GLBRC088-011.90
Related Tables:	Soil pH Soil Moisture Soil Bulk Density - GLBRC Intensive Sites Arlington Baseline Surface Soil Survey Soil Bulk Density - GLBRC Scale-up sites Surface and Deep Core Soil Carbon and Nitrogen Content- GLBRC Scale-up sites Agronomic Soil Chemistry - GLBRC Intensive Sites Soil Inorganic Nitrogen Soil Inorganic Nitrogen- Resin Strip Method TDR array daily soil moisture Soil Texture- Deep Core - GLBRC Intensive Site Soil Texture - Deep Core - GLBRC Scale-up sites Soil Temperature Nitrogen mineralization Soil Moisture GLBRC Scale-up Soil Carbon and Nitrogen- Baseline Prior to GLBRC Intensive Site Soil pH - GLBRC Scaleup sites Soil Texture and Soil Organic Matter at ERT Plots Field Moist Soil pH Gravimetric soil moisture for BCSE rainout shelter experiment
Personnel:	Phil Robertson, lead investigator Leilei Ruan, investigator
Last Updated	2017-06-22

Variate	Description	Units
year	year of the growing season
sample date	date soil was collected
treatment n rate kg ha	experimental treatment - nitrogen application rate	kg/ha
replicate	replicate block nested within treatment
nitrate mg kg	soil extractable nitrate plus nitrite, as N, average of analytical replicates, screened for outliers and corrected for soil moisture	mg/kg
ammonium mg kg	soil extractable ammonium, as N, average of analytical replicates, screened for outliers and corrected for soil moisture	mg/kg
harvest strategy	How many times is the crop harvested per year?
comments	notes specific to the data row

Protocols
Soil Inorganic N

GLBRC data is not yet publicly available.

Data Excerpt

year	sample_date	treatment_n_rate_kg_ha	replicate	nitrate_mg_kg	ammonium_mg_kg	harvest_strategy	comments
2009.0	2009-06-20	84	4	9.85	9.43	1 harvest per year
2009.0	2009-06-23	84	4	29.51	12.54	1 harvest per year