Measurement
- Version 1 of 1
Measurement Data Component
Title: Daily nitrous oxide flux measurements: AC0213, Nottinghamshire, 2011 urine
Related Party - Organisation (Author): ADAS UK Ltd.
Related Party - Organisation (Funder): Defra
Abstract:
An experiment was carried out at a commercial farm near Ollerton, central England on a sandy loam soil using small field plots (10 x 3 m) arranged in a randomised block design with three replicates per treatment. Cattle urine (at 5 L/m2) was applied to grassland in early-June and in mid-September 2011. A control treatment was included where no urine was applied. In separate treatments, two commercially available nitrification inhibitors were tested; dicyandiamide (DCD) and an additive containing two pyrazole derivatives (1H-1,2,4-triazole and 3-methylpyrazole) were pre-mixed with the urine prior to application to give application rates of 15 kg/ha and 5 L/ha for the DCD and the pyrazole derivatives, respectively. The urine was collected from lactating dairy cows at Reading University, kept refrigerated at less than 4°C and applied within two days of collection. Following urine application to five 0.36 m2 areas of the plot, measurements of direct nitrous oxide (N2O) emissions were made over c.12 months, using 5 static chambers (1 per 0.36 m2 area, giving a total surface area of 0.8 m2) and analysed by gas chromatography. This dataset is of daily nitrous oxide flux (g N2O-N/ha/d) measurements. Pyrazole derivative = an additive containing two pyrazole derivatives (1H-1,2,4-triazole and 3-methylpyrazole). 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; Urine; Nitrification inhibitors; Grassland soils; Sandy soils
Geographic Keywords: Nottinghamshire
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): -1.27 Longitude (East): -1.0 Latitude (South): 53.14 Latitude (North): 53.30 |
Phenomenon Time - Start Date/Time: 2011-06-09 End Date/Time: 2012-09-20
Result Time: 2012-09-20
Valid Time - Start Date/Time: 2011-06-09 End Date/Time: 2012-09-20
Feature of Interest: biosphere
Publication Date: 2017-02-03
This data is made available under the terms of the FBA Licence.
Total file downloads: 393
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