Ultra high pressure injection of nitrogen (UAN)

CC BY 4.0

Research organisaton
Funding source

Trial details

Researcher(s) Andrew Bird
Greg Butler
Lukas Van Zweiten
Year(s) 2010
Contributor South Australian No-till Farmers Association
Trial location(s) Wollongbar, NSW
Salter Sprins, SA
Ultra high pressure injection of nitrogen (UAN) locations

To assess the potential to use Ultra High Pressure (UHP) liquid injection technology to apply an ultra low soil disturbance UAN sideband into cropping soils and test whether UHP injection of UAN is a viable alternative N application method for the future. 

Key messages

Field observation suggests the 50% UAN solution produced a better stubble cutting action than water alone.

Lead research organisation N/A
Host research organisation N/A
Trial funding source AGAC AotG R1 211
Related program N/A
  • This project was supported by funding from the Australian Government through the Carbon Farming Initiative.
  • Luke and Adrian McCabe for use of land and farm equipment.
  • South Australian No-Till Farmers Association.
  • NSW DPI Wollongbar Research Centre.
  • Flow International Corporation. 

Other trial partners SANTFA, NSW DPI
Download the trial report to view additional trial information


Crop type Cereal (Grain): Wheat
Treatment type(s)
  • Fertiliser: Application Method
Trial type Experimental
Trial design Randomised,Replicated

Wollongbar 2010

Sowing machinery Not specified
Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Psuedoreplication Not specified
Tillage Not specified

Salter Sprins 2010

Sowing machinery

No-Till Knifepoint

Sow date Not specified
Harvest date Not specified
Plot size 1.3m x 30m
Plot replication 4
Psuedoreplication Not specified
Tillage No-Till
Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

# Treatment 1
Plot yield (kg/plot) Protein (%)
1 Nil 15.49 9.45
2 T1 UAN 25k psi 14.92 10.38
3 T1 UAN 50k psi 15.15 10.63
4 T1 UAN Boom 14.82 10.58
5 T2 UAN Boom 14.96 10.88
6 T2 UAN 25k psi 15.38 10.53
7 T2 UAN 50k psi 15.41 10.28

Plot yield kg/plot


Protein %

Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Wollongbar, NSW Not specified
Salter Sprins, SA Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Wollongbar, NSW Ferrosol
Salter Sprins, SA Chromosol
Soil Moisture Source: BOM/ANU
Average amount of water stored in the soil profile during the year, estimated by the OzWALD model-data fusion system.
Year Wollongbar NSW Salter Sprins SA
2010 619.3mm423.1mm
2009 564.7mm388.4mm
2008 505.4mm348.1mm
2007 368.1mm390.0mm
2006 462.0mm398.2mm
2005 441.8mm408.1mm
2004 418.3mm366.5mm
2003 465.9mm412.2mm
2002 410.6mm396.0mm
2001 452.8mm412.0mm
2000 504.8mm416.9mm
National soil grid Source: CSIRO/TERN
NOTE: National Soil Grid data is aggregated information for background information on the wider area
Actual soil values can vary significantly in a small area and the trial soil tests are the most relevant data where available

Soil properties



Derived climate information

No observed climate data available for this trial.
Derived climate data is determined from trial site location and national weather sources.

Wollongbar SA

Salter Sprins SA

Wollongbar SA

NOTE: Exact trial site locality unknown - Climate data may not be accurate

Salter Sprins SA


Some data on this site is sourced from the Bureau of Meteorology

SILO weather estimates sourced from https://www.longpaddock.qld.gov.au/silo/
Jeffrey, S.J., Carter, J.O., Moodie, K.B. and Beswick, A.R. (2001). Using spatial interpolation to construct a comprehensive archive of Australian climate data , Environmental Modelling and Software, Vol 16/4, pp 309-330. DOI: 10.1016/S1364-8152(01)00008-1.

Trial report and links

2010 trial report

Trial last modified: 06-08-2019 07:54am AEST