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Download CSV Annual N2O AC0111 Cambridgeshire 2010-2011.csv 0.01MB

Measurement Data Component

Title: Annual N2O measurements and associated data: AC0111, Cambridgeshire, 2010-2011
Related Party - Organisation (Author): ADAS
Related Party - Organisation (Funder): Defra
An experiment was carried out at ADAS Boxworth (Cambridgeshire, average annual rainfall 550mm) on a clay/clay loam soil (35% clay) in harvest season 2011. Cattle slurry (c.55m3/ha) was applied to field-scale (12 m x 48 m) hydrologically isolated plots using trailing hose equipment at three different timings in August 2010 (to stubble), September 2010 (post emergence of winter oilseed rape) and February 2011 (to a growing winter oilseed rape crop). Each plot was drained with lateral drains at 24 m spacing and 90 cm depth, with gravel backfill to within 30 cm of the surface and secondary mole drains installed at right angles to the lateral drains at 50 cm depth and 2 m spacing. There were 3 replicates of each treatment arranged in a randomised block design. At each application timing a replicate control plot, receiving no slurry, was also established on each of the slurry treatments. Direct nitrous oxide emissions were measured from each treatment and the untreated control for 12 months using the static chamber technique (5 chambers per plot). Ammonia emissions were measured for 7 days after application using the micro-meteorological mass balance technique. Drainage volumes were measured continuously from each plot and drainage water samples (collected on a flow-proportional basis) were analysed for nitrate-N. 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, 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 emissions, cumulative nitrate leaching loss, crop yield, crop total nitrogen offtake, grain nitrogen offtake, manure dry matter, manure pH, manure organic carbon, manure ammonium-N applied, manure nitrate-N applied, manure uric acid-N applied and time to incorporation. ND = not determined. NA = not applicable. 'Rainfall during the experimental period' = cumulative rainfall from the first day of manure application to the last day of N2O sampling. The soil organic carbon content and soil pH were measured in 2007. 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 elsewhere to 2 decimal places.
Subject Keywords: Nitrous oxideCattle slurryArable landClay soils
Geographic Keywords: Cambridgeshire
Observed Properties: Ammonia emissionAmmonium-nitrogenApplication methodsApplication timingCrop nitrogen offtakeCrop yieldCropsDry matter contentEmission factorExperimental blockingExperimental treatmentGrain nitrogen offtakeNitrate leachingNitrate-nitrogenNitrogen sourceNitrous oxide mass fluxRainfallReadily available-nitrogenSoil clay contentSoil dry bulk densitySoil organic carbonSoil pHSoil textureTime to incorporationTotal nitrogenTotal organic carbonUric acid-nitrogenYearpH
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 (91% dry matter)
Parameter: Cumulative ammonia emission
Parameter: Cumulative nitrate leaching loss
Parameter: Grain nitrogen offtake
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): -0.16
    Longitude (East): 0.11
    Latitude (South): 52.19
    Latitude (North): 52.35

Phenomenon Time -  Start Date/Time: 2010-08-18 End Date/Time:  2012-02-15
Result Time: 2012-02-15
Valid Time -  Start Date/Time: 2010-08-18 End Date/Time:  2012-02-15
Feature of Interest: biosphere
Publication Date: 2017-04-11

This data is made available under the terms of the Open Government Licence (Version 3).

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