Measurement

Download CSV Daily N2O AC0213 Devon 2010.csv 0.05MB


Measurement Data Component

Title: Daily nitrous oxide (N2O) flux measurements: AC0213, Devon, 2010
Related Party - Organisation (Author): Rothamsted Research - North Wyke
Related Party - Organisation (Funder): Defra
Abstract:
At Rothamsted Research, North Wyke, near Okehampton, south-west England (clay loam topsoil texture), direct nitrous oxide (N2O) and ammonia (NH3) emissions were measured from replicated (x3) plots (12 x 13 m) following spring applications of manufactured nitrogen (N) fertilisers to grassland. A control treatment was included where no N fertiliser was applied. Ammonium nitrate (AN) fertiliser (34.5% N) or urea fertiliser (46% N) was applied at a rate of 120 kg N ha-1 in two equal split applications (mid- and late April), with or without the commercially available nitrification inhibitor - dicyandiamide (DCD). The DCD was applied in a solution (15 kg DCD ha-1) and sprayed onto the plots immediately after N fertiliser application. The N supplied by the DCD was accounted for in the 120 kg N ha-1. As separate treatments, AN and urea fertiliser were also applied in four equal splits, 1 week apart from mid-April to early May i.e. 'little and often'. Following N fertiliser application, measurements of direct N2O-N were made over c.12 months, using 5 static chambers (0.8 m2 total surface area) per plot and analysed by gas chromatography. This dataset is of daily nitrous oxide flux (g N2O-N/ha/d) measurements. If the data file is downloaded/opened in excel, dates may appear as dd-mm-yy instead of the standard yy-mm-dd.
Subject Keywords: Nitrous oxide; Ammonium nitrate; Urea; Nitrification inhibitors; Grassland soils; Clay soils
Geographic Keywords: Devon
Observed Properties: Date; Experimental blocking; Experimental treatment; Nitrous oxide mass flux; Year
Parameter: Block number
Parameter: Daily nitrous oxide emission
Parameter: Measurement date
Parameter: Treatment
Parameter: Year experiment started

Geographic Extent -     Longitude (West): -4.04     Longitude (East): -3.75     Latitude (South): 50.68     Latitude (North): 50.85

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Phenomenon Time -  Start Date/Time: 2010-04-13 End Date/Time:  2011-03-14
Result Time: 2011-03-14
Valid Time -  Start Date/Time: 2010-04-13 End Date/Time:  2011-03-14
Feature of Interest: biosphere
Publication Date: 2017-02-03

This data is made available under the terms of the FBA Licence.

Total file downloads: 337

Is Input Of	Is Part Of Dataset
	Nitrification inhibitors and fertiliser nitrogen application timing strategies to reduce N2O. Site in Devon, 2010