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Measurement


  • Version 1 of 1

Measurement Data Component

Title: Annual N2O measurements and associated data: SLURRY-NR, Devon, 2004
Related Party - Organisation (Author): Rothamsted Research - North Wyke
Related Party - Organisation (Funder): Defra
Abstract:
Cattle slurry was applied by trailing shoe and surface broadcasting at five rates, viz: 20, 35, 50, 65 and 80 m3 ha-1, using a purpose built small-plot applicator to grassland, on a coarse sandy loam soil in autumn 2004 at a site close to North Wyke, Devon. There were 3 replicate plots (5 x 12 m) of each application treatment arranged in a randomised block design. Ammonia emissions were measured from each treatment for 7 days after application using wind tunnels. Direct nitrous oxide (N2O) emissions were measured from the 35 m3 ha-1 slurry rate only for about 12 months after application from both application techniques and an untreated control, using the static chamber technique (five chambers per plot). Nitrous oxide samples were analysed using gas chromatography. Crop (fresh weight and dry matter) yields and N offtakes were measured at harvest. Where measured, this dataset contains: annual nitrous oxide emissions (kg N2O-N/ha/year), annual nitrous oxide emission factors (% of total nitrogen applied), year experiment started, site location, crop type, previous crop type, soil texture, soil clay content, soil dry bulk density, soil organic carbon content, soil pH, total rainfall during the experimental period, nitrogen source, experimental treatments, application timing, application method, block number, total nitrogen applied, readily available nitrogen (i.e. if present, the sum of ammonium-N, nitrate-N and uric acid-N) applied, cumulative ammonia emission, cumulative nitrate leaching loss, crop yield, crop total nitrogen offtake, crop grain nitrogen offtake, manure dry matter, manure pH, manure organic carbon, manure total nitrogen content, manure ammonium-N applied, manure nitrate-N applied, manure uric acid-N applied and time to incorporation (i.e. the length of time between application and incorporation). ND = not determined. NA = not applicable. The N2O emission factors are calculated using annual cumulative N2O values to 15 decimal places, however the annual cumulative N2O and emission factor values have been reported to 2 decimal places.
Subject Keywords: Nitrous oxideCattle slurryGrassland soilsSandy soils
Geographic Keywords: Devon
Observed Properties: Ammonia emission; Ammonium-nitrogen; Application methods; Application timing; Crop nitrogen offtake; Crop yield; Crops; Dry matter content; Emission factor; Experimental blocking; Experimental treatment; Grass ley age; Nitrate leaching; Nitrate-nitrogen; Nitrogen source; Nitrous oxide mass flux; Rainfall; Readily available-nitrogen; Soil clay content; Soil dry bulk density; Soil organic carbon; Soil pH; Soil texture; Time to incorporation; Total nitrogen; Total organic carbon; Uric acid-nitrogen; Year; pH
Parameter: Age of grass ley
Parameter: Annual nitrous oxide emission
Parameter: Annual nitrous oxide emission factor (% of total nitrogen applied)
Parameter: Application method
Parameter: Application timing
Parameter: Block number
Parameter: Clay content
Parameter: Crop total nitrogen offtake
Parameter: Crop type
Parameter: Crop yield
Parameter: Cumulative ammonia emission
Parameter: Cumulative nitrate leaching loss
Parameter: Manure ammonium-N applied
Parameter: Manure dry matter
Parameter: Manure nitrate-N applied
Parameter: Manure pH
Parameter: Manure total organic carbon
Parameter: Manure uric acid-N applied
Parameter: Nitrogen source
Parameter: Previous crop type
Parameter: Rainfall during the experimental period
Parameter: Readily available-nitrogen applied
Parameter: Soil dry bulk density
Parameter: Soil organic carbon
Parameter: Soil pH
Parameter: Soil texture
Parameter: Time to incorporation
Parameter: Total nitrogen applied
Parameter: Treatment
Parameter: Year experiment started

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

Phenomenon Time -  Start Date/Time: 2004-11-24 End Date/Time:  2005-11-02
Result Time: 2005-11-02
Valid Time -  Start Date/Time: 2004-11-24 End Date/Time:  2005-11-02
Feature of Interest: biosphere
Publication Date: 2016-11-02

This data is made available under the terms of the FBA Licence.

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