Measurement
- Version 1 of 1
Measurement Data Component
Title: Daily topsoil mineral nitrogen: 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 contains topsoil mineral nitrogen values measured to a depth of 0-10 cm. Measurements were taken from all treatments on selected days. The first measurement is a 'background' measurement i.e. before any treatments were applied. 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: Soil mineral nitrogen; Top soil; Grassland soils; Clay soils
Geographic Keywords: Devon
Observed Properties: Ammonium-nitrogen; Date; Experimental blocking; Experimental treatment; Nitrate-nitrogen; Sampling depth; Year
Parameter: Block number
Parameter: Depth of soil sampling
Parameter: Measurement date
Parameter: Soil ammonium-nitrogen content
Parameter: Soil nitrate-nitrogen content
Parameter: Treatment
Parameter: Year experiment started
Geographic Extent - Longitude (West): -4.04 Longitude (East): -3.75 Latitude (South): 50.68 Latitude (North): 50.85 |
Phenomenon Time - Start Date/Time: 2012-05-08 End Date/Time: 2013-07-02
Result Time: 2013-07-02
Valid Time - Start Date/Time: 2012-05-08 End Date/Time: 2013-07-02
Feature of Interest: biosphere
Publication Date: 2017-04-05
This data is made available under the terms of the FBA Licence.
Total file downloads: 386
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