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Nitrous oxide emissions from urine patches - experiment 1 part 2. Terang, Victoria, 2010 [Theme 1: Inhibitors for reducing emissions]

Data Set Citation

Kelly K of Future Farming Systems Research Division, Victorian Department of Environment and Primary Industries (Victoria). Nitrous oxide emissions from urine patches - experiment 1 part 2. Terang, Victoria, 2010 [Theme 1: Inhibitors for reducing emissions].
kelly.27.23 (http://www.n2o.net.au/knb/metacat/kelly.27.23/html).

Metadata download:
Ecological Metadata Language (EML) File
Data Table
Licence
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Data Set Owner(s):
Individual:
Mr. Kevin Kelly
Organization:
Future Farming Systems Research Division, Victorian Department of Environment and Primary Industries (Victoria)
Position:
Project Leader
Address:
Private Bag 1,
Ferguson Road,
Tatura,
Victoria 3616
Australia
Phone:
+61 3 5833 5359 (voice)
Email Address:
kevin.kelly@depi.vic.gov.au
Associated Party
Individual:
Ms. Siobhann McCafferty
Organization:
Institute for Future Environments, Queensland University of Technology
Position:
Data Librarian
Address:
2 George Street,
Brisbane,
QLD 4001
Australia
Phone:
+61 7 3138 0457 (voice)
Email Address:
siobhann.mccafferty@qut.edu.au
Role:
Custodian/Steward
Abstract

A study of the impact of the nitrification inhibitors dicyandiamide (DCD) on nitrous oxide emissions from dairy cows urine deposited on pasture was conducted at Terang in south-western Victoria, Australia from April 2010 to September 2010. Nitrous oxide fluxes were measured on four replicates of six treatments. Treatments were; * Treatment 1 - nil applied, * Treatment 2 - DCD applied 23 April 2010 * Treatment 3 - urine @ 1000 kg N/ha applied 21 May 2010 * Treatment 4 - urine @ 1000 kg N/ha applied 21 May 2010 plus DCD @ 10 kg a.i./ha applied 23 April 2010 * Treatment 5 - urine @ 1000 kg N/ha applied 23 April 2010 * Treatment 6 - urine @ 1000 kg N/ha applied 23 April 2010 plus DCD @ 10 kg a.i./ha applied 23 April 2010. Nitrous oxide flux was measured in TWO replicates of treatments 3,4,5 and 6. Measurement system used automated chambers liked to a Fourier Transform infrared spectometer for gas analysis. Daily flux (g N2O-N/ha/day) was calculated for each chamber. Soil water (surface 0-65 mm) and soil temperature (50mm) was measured continuously in each chamber base. Soil mineral N content of all treatment and replicates was measured (0-100 mm) routinely. Initial site soil physical and chemical status were defined. Standard meteorological information was collected for an on-site weather station.

Keywords
  • Nitrous oxide
  • N2O
  • Nitrification inhibitors
  • Soil mineral nitrogen
  • Dicyandiamide (DCD)
  • Bovine urine
  • Pasture
  • Auto Chambers
  • Dairy Cattle
  • Terang
  • VIC
anzsrc-for
  • 0502
  • 0799
Geographic Coverage
Geographic Description:
DemoDAIRY, Terang, Victoria, Australia 38 14 S, 142 55 E
Bounding Coordinates:
West:  
142.92  degrees
East:  
142.92  degrees
North:  
-38.24  degrees
South:  
-38.24  degrees
Contact(s)
Individual:
Mr. Kevin Kelly
Organization:
Future Farming Systems Research Division, Victorian Department of Environment and Primary Industries (Victoria)
Position:
Project Leader
Address:
Private Bag 1,
Ferguson Road,
Tatura,
Victoria 3616
Australia
Phone:
+61 3 5833 5359 (voice)
Email Address:
kevin.kelly@depi.vic.gov.au
Methods Info
Step 1:
Description:
Flux Measurements
Eight enclosure chambers (0.8m*0.8m*0.47m) automatically controlled. Linked to a Fourier Transfrom Infrared (FTIR) spectometer for spectral analysis, which are tranformed to concentrations every minute, from which flux is calculated. Chambers are sampled in sequence (dictated by the software), with each chamber sampled for a 30 minute period each 4 hours. Flux densities have been calculated using linear least squares from gas density measurements, other curves have been fitted but have not shown any improvement in data fit, as such all calcuation of based on a linear model.
Instrument(s):
  • FTIR - standard Bomem FTLA2000 with KBr optics, multipass White cell and InSb detector, 32 m pathlength gas cell (approximate volume 4 L)
Step 2:
Description:
Soil water
Surface soil water content (0-65 mm), two probes per chamber base, logged every 30 minutes (averag of 10 minute readings)
Instrument(s):
  • Theta-Probes Delta T MK2x
Step 3:
Description:
Soil temperature
Soil temperature - logged every 30 minutes (averag of reading every 10 minutes)
Instrument(s):
  • Type-T thermocouples
Step 4:
Description:
Weather station
Standard measurement weather station
Instrument(s):
  • MEA - Australia
Sampling Area And Frequency:

April 2010 - September 2010

Sampling Description:

Experimental design (6 treatments by 4 replicates) * Treatment 1 - nil applied, * Treatment 2 - DCD applied 23 April 2010 * Treatment 3 - urine @ 1000 kg N/ha applied 21 May 2010 * Treatment 4 - urine @ 1000 kg N/ha applied 21 May 2010 plus DCD @ 10 kg a.i./ha applied 23 April 2010 * Treatment 5 - urine @ 1000 kg N/ha applied 23 April 2010 * Treatment 6 - urine @ 1000 kg N/ha applied 23 April 2010 plus DCD @ 10 kg a.i./ha applied 23 April 2010. Nitrous oxide flux was measured in TWO replicates of treatments 3,4,5 and 6.

Additional Metadata
Access
Access Control:
Auth System:
knb
Order:
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Allow:
[read] public
[all] uid=mccafferty,o=unaffiliated,dc=ecoinformatics,dc=org
[all] uid=datalibrarian,o=unaffiliated,dc=ecoinformatics,dc=org
[read] uid=shcherbak,o=unaffiliated,dc=ecoinformatics,dc=org
[all] uid=kelly,o=unaffiliated,dc=ecoinformatics,dc=org
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