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Measurement


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Download CSV Daily SMN AC0213 Devon 2010.csv 0.01MB


Measurement Data Component

Title: Daily topsoil mineral nitrogen: 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'. This dataset contains topsoil mineral nitrogen values measured to a depth of 0-10 cm. Measurements were taken from the control and ammonium nitrate treatments only, on days when nitrous oxide flux measurements were also made. The measurements were taken from the control and ammonium nitrate treatments only. 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: Soil mineral nitrogenTop soilGrassland soilsClay soils
Geographic Keywords: Devon
Observed Properties: Ammonium-nitrogenDateExperimental blockingExperimental treatmentNitrate-nitrogenSampling depthYear
Parameter: Block number
Parameter: Depth of soil sampling
Parameter: Measurement date
Parameter: Soil ammonium-nitrogen content
Parameter: Soil nitrate-nitrogen content
Parameter: Treatment
Parameter: Year experiment started

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

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 Open Government Licence (Version 3).

Total file downloads: 25

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