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Download CSV Application dates AC0213 Devon 2011.csv 0.01MB


Measurement Data Component

Title: Fertiliser application dates: 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 fertiliser application rates (i.e. total nitrogen applied) and dates applied. NA = not applicable. DMPP = 3,4-dimethylpyrazole phosphate. 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: Application timingApplication ratesAmmonium nitrateUreaNitrification inhibitorsAmmonium sulphate nitrate
Geographic Keywords: Devon
Observed Properties: Application timingExperimental treatmentTotal nitrogen
Parameter: Application date split 1
Parameter: Application date split 2
Parameter: Application date split 3
Parameter: Application date split 4
Parameter: Application date split 5
Parameter: Application date split 6
Parameter: Fertiliser Application Rate
Parameter: Fertiliser application rate split 1
Parameter: Fertiliser application rate split 2
Parameter: Fertiliser application rate split 3
Parameter: Fertiliser application rate split 4
Parameter: Fertiliser application rate split 5
Parameter: Fertiliser application rate split 6
Parameter: Nitrification inhibitor application rate
Parameter: Nitrification inhibitor application rate split 1
Parameter: Nitrification inhibitor application rate split 2
Parameter: Nitrification inhibitor application rate split 3
Parameter: Nitrification inhibitor application rate split 4
Parameter: Nitrification inhibitor application rate split 5
Parameter: Nitrification inhibitor application rate split 6
Parameter: Total nitrogen application rate
Parameter: Treatment

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

Phenomenon Time -  Start Date/Time: 2011-04-13 End Date/Time:  2012-04-12
Result Time: 2011
Valid Time -  Start Date/Time: 2011-04-13 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: 34

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