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Measurement Data Component

Title: Annual N2O measurements and associated data: AC0101, Cambridgeshire, 2007
Related Party - Organisation (Author): ADAS UK Ltd.
Related Party - Organisation (Funder): Defra
At ADAS Boxworth in south east England nitrous oxide (N2O) emissions were monitored following spring ammonium nitrate fertiliser applications in the range 0 (i.e. untreated control) to 350 kg N ha-1. Up to three separate fertiliser applications were made in order to reach the target application rate. There were 3 replicate plots (4 x 12 m) of each treatment arranged in a randomised block design. The plots were established on a winter wheat crop sown the previous autumn, on a clay loam soil. Direct nitrous oxide emissions were measured from each treatment for 12 months using the static chamber technique (3 chambers per plot) and GC analysis. 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, ammonium-N, nitrate-N & uric acid-N) applied, cumulative ammonia emission, cumulative nitrate leaching loss, crop yield, crop total nitrogen offtake & crop grain nitrogen offtake. ND = not determined. NA = not applicable. 'Rainfall during the experimental period' = cumulative rainfall from the first day of fertiliser application to the last day of N2O sampling. 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 oxideAmmonium nitrateArable landClay soils
Geographic Keywords: Cambridgeshire
Observed Properties: Ammonia emissionApplication timingCrop nitrogen offtakeCrop yieldCropsEmission factorExperimental blockingExperimental treatmentGrain nitrogen offtakeNitrate leachingNitrogen sourceNitrous oxide mass fluxRainfallReadily available-nitrogenSoil clay contentSoil dry bulk densitySoil organic carbonSoil pHSoil textureTotal nitrogenYear
Parameter: Annual nitrous oxide emission
Parameter: Annual nitrous oxide emission factor (% of total nitrogen applied)
Parameter: Application timing
Parameter: Block number
Parameter: Clay content
Parameter: Crop total nitrogen offtake
Parameter: Crop type
Parameter: Crop yield (85% dry matter)
Parameter: Cumulative ammonia emission
Parameter: Cumulative nitrate leaching loss
Parameter: Grain nitrogen offtake
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: Total nitrogen applied
Parameter: Treatment
Parameter: Year experiment started

Geographic Extent -
    Longitude (West): -0.16
    Longitude (East): 0.11
    Latitude (South): 52.19
    Latitude (North): 52.35

Phenomenon Time -  Start Date/Time: 2007-03-12 End Date/Time:  2008-03-04
Result Time: 2008-03-04
Valid Time -  Start Date/Time: 2007-03-12 End Date/Time:  2008-03-04
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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