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Download CSV Application dates AC0116 Devon 2012 urine.csv 0.01MB


Measurement Data Component

Title: Dung and urine application dates: AC0116, Devon, 2012, urine
Related Party - Organisation (Author): Rothamsted Research - North Wyke
Related Party - Organisation (Funder): Defra
Related Party - Organisation (Funder): Scottish Government
Related Party - Organisation (Funder): Welsh Assembly Government
Related Party - Organisation (Funder): DAERA Northern Ireland
Abstract:
An experiment was carried out at Rothamsted Research - North Wyke near Okehampton, south-west England (clay topsoil texture) using small field plots (3 x 6 m) arranged in a randomised block design with three replicates per treatment. Cattle urine (at 5 L/m2), synthetic urine (at 5 L/m2) and cattle dung (at 20 kg/m2) was applied to grassland in mid-May (spring), early-July (summer) and in late-September (autumn) 2012. The synthetic urine was prepared using the formulation described for “R2” in the paper by Kool et al., (2006). A control treatment was included where no urine or dung was applied. In a separate treatment, a commercially available nitrification inhibitor was tested; dicyandiamide (DCD) was pre-mixed with the urine prior to application to give an application rate of 10 kg /ha for the DCD. The urine and dung was collected from lactating dairy cows at Reading University, kept refrigerated at <4°C and applied in less than 2 days after collection. Reference: Kool, D.M., Hoffland, E., Abrahamse, P.A and van Groenigen, J.W. (2006). What artificial urine composition is adequate for simulating soil N2O fluxes and mineral N dynamics Soil Biology and Biochemistry 38, 1757-1763. This dataset is of dung and urine application rates (i.e. total nitrogen applied) and dates applied. The N supplied by the DCD was accounted for in the total N application rate. At the spring application timing, the total N content of the 'urine + DCD' treatment was measured by lab analysis after mixing. For the summer and autumn application timings the total N content of the 'urine + DCD' treatment was assumed to be the same as for the 'urine' treatment with the addition of the known N content of the applied DCD. NA = not applicable. 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: Application timingApplication ratesUrineDungSynthetic urineNitrification inhibitorsDCD
Geographic Keywords: Devon
Observed Properties: Application timingExperimental treatmentTotal nitrogen
Parameter: Application date split 1
Parameter: Application date split 2
Parameter: Application date split 3
Parameter: Application date split 4
Parameter: Application date split 5
Parameter: Application date split 6
Parameter: Grazing Returns Application Rate
Parameter: Grazing Returns application rate split 1
Parameter: Grazing Returns application rate split 2
Parameter: Grazing Returns application rate split 3
Parameter: Grazing Returns application rate split 4
Parameter: Grazing Returns application rate split 5
Parameter: Grazing Returns application rate split 6
Parameter: Nitrification inhibitor application rate
Parameter: Nitrification inhibitor application rate split 1
Parameter: Nitrification inhibitor application rate split 2
Parameter: Nitrification inhibitor application rate split 3
Parameter: Nitrification inhibitor application rate split 4
Parameter: Nitrification inhibitor application rate split 5
Parameter: Nitrification inhibitor application rate split 6
Parameter: Total nitrogen application rate
Parameter: Treatment

Geographic Extent -
    Longitude (West): -4.04
    Longitude (East): -3.75
    Latitude (South): 50.68
    Latitude (North): 50.85

Phenomenon Time -  Start Date/Time: 2012-05-15 End Date/Time:  2013-09-10
Result Time: 2012
Valid Time -  Start Date/Time: 2012-05-15 End Date/Time:  2013-09-10
Feature of Interest: biosphere
Publication Date: 2017-04-05

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

Total file downloads: 28

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