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Measurement


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Download CSV Daily SMN AC0213 Devon 2012.csv 0.01MB


Measurement Data Component

Title: Daily topsoil mineral nitrogen: AC0213, Devon, 2012
Related Party - Organisation (Author): Rothamsted Research - North Wyke
Related Party - Organisation (Funder): Defra
Abstract:
At a grassland site near Rothamsted Research, North Wyke in south-west England (sandy clay loam topsoil texture) small field plots (10 x 3 m) were arranged in a randomised block design with three replicates per treatment. Cattle urine (at 5 L m-2) was applied to grassland in mid-March and in early September 2012. A control treatment was included where no urine was applied. In separate treatments, two commercially available nitrification inhibitors were tested; dicyandiamide (DCD) and an additive containing two pyrazole derivatives (1H-1,2,4-triazole and 3-methylpyrazole) were pre-mixed with the urine prior to application to give application rates of 15 kg/ha and 5 L/ha for the DCD and the pyrazole derivatives, respectively. The urine was collected from lactating dairy cows at Reading University, kept refrigerated at less than 4°C and applied within two days of collection. This dataset contains topsoil mineral nitrogen values measured to a depth of 0-10 cm. Measurements were taken from all treatments, for about 2 months after application on days when nitrous oxide flux measurements were also made. The first value is a background measurement i.e. before treatments were applied (autumn application only). Pyrazole derivative = an additive containing two pyrazole derivatives (1H-1,2,4-triazole and 3-methylpyrazole). 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 nitrogenTop soilGrassland soils
Geographic Keywords: Devon
Observed Properties: Ammonium-nitrogenDateExperimental blockingExperimental treatmentNitrate-nitrogenSampling depthYear
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): -4.03
    Longitude (East): -3.76
    Latitude (South): 50.72
    Latitude (North): 50.89

Phenomenon Time -  Start Date/Time: 2012-03-16 End Date/Time:  2012-10-17
Result Time: 2012-10-17
Valid Time -  Start Date/Time: 2012-03-16 End Date/Time:  2012-10-17
Feature of Interest: biosphere
Publication Date: 2017-02-03

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

Total file downloads: 1

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