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Download CSV Background SMN AC0213 Devon 2011.csv 0.01MB


Measurement Data Component

Title: Background soil mineral nitrogen: AC0213, Devon, 2011
Related Party - Organisation (Author): Rothamsted Research - North Wyke
Related Party - Organisation (Funder): Defra
Abstract:
At a grassland site near Rothamsted Research, North Wyke in south-west England (sandy 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), urea fertiliser (46% N) or an ammonium sulphate nitrate (ASN) fertiliser (26% N) were applied at a rate of 120 kg N ha-1 in two equal split applications (mid- and late April). In separate treatments, two commercially available nitrification inhibitors were tested; dicyandiamide (DCD) was sprayed onto the AN and urea plots immediately after N fertiliser application, and a 3,4-dimethylpyrazole phosphate (DMPP) containing fertiliser (26% N) was also applied at a rate of 120 kg N ha-1, in two split applications. 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 is of soil mineral nitrogen (SMN) values measured to 0-90 cm depth before experimental treatments were applied. ND = not determined.
Subject Keywords: Background soil mineral nitrogenGrassland soils
Geographic Keywords: Devon
Observed Properties: Ammonium-nitrogenBackground soil mineral nitrogenExperimental blockingNitrate-nitrogenSampling depth
Parameter: Background soil mineral nitrogen content
Parameter: Block number
Parameter: Depth of soil sampling
Parameter: Soil ammonium-nitrogen content
Parameter: Soil nitrate-nitrogen content

Geographic Extent -
    Longitude (West): -4.03
    Longitude (East): -3.76
    Latitude (South): 50.72
    Latitude (North): 50.89

Phenomenon Time -  Start Date/Time: 2011-04-14 End Date/Time:  2012-04-12
Result Time: 2011
Valid Time -  Start Date/Time: 2011-04-14 End Date/Time:  2012-04-12
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: 30

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