Measurement
- Version 1 of 1
Measurement Data Component
Title: Daily topsoil mineral nitrogen: AC0213, Nottinghamshire, 2011
Related Party - Organisation (Author): ADAS UK Ltd.
Related Party - Organisation (Funder): Defra
Abstract:
On a commercial dairy farm near Newark, central England (clay loam topsoil texture), direct nitrous oxide (N2O) and ammonia (NH3) emissions were measured from replicated (x3) plots (12 x 14 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 in two equal split applications (late-February and late-March), with or without the commercially available nitrification inhibitor - dicyandiamide (DCD). The DCD was applied in a solution (15 kg DCD/ha) 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. As separate treatments, AN and urea fertiliser were also applied in four equal splits in late-February, early-March, late-March and early-April 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. Treatment values shown are the mean of three blocks. The first measurement is a 'background' measurement i.e. before any treatments were applied. ND = not determined. 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 nitrogen; Top soil; Grassland soils; Clay soils
Geographic Keywords: Nottinghamshire
Observed Properties: Ammonium-nitrogen; Date; Experimental blocking; Experimental treatment; Nitrate-nitrogen; Sampling depth; Year
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): -1.00 Longitude (East): -0.73 Latitude (South): 53.00 Latitude (North): 53.16 |
Phenomenon Time - Start Date/Time: 2011-02-17 End Date/Time: 2012-02-17
Result Time: 2012-02-17
Valid Time - Start Date/Time: 2011-02-17 End Date/Time: 2012-02-17
Feature of Interest: biosphere
Publication Date: 2017-02-03
This data is made available under the terms of the FBA Licence.
Total file downloads: 432
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