Phosphorus fertiliser evaluation trial

CC BY 4.0

Research organisaton
Funding source

Trial details

Researcher(s) Colin McMaster (NSW DPI)
Ken Motley (NSW DPI)
Simon Speirs (NSW DPI)
Remy van de Ven (NSW DPI)
Year(s) 2009
Contributor Central West Farming Systems
Trial location(s) Gunningbland, NSW
Peak Hill, NSW
Phosphorus fertiliser evaluation trial locations

To explore the use of alternative fertiliser sources and nutritional programs.

Key messages
  • Hi-analysis granular fertiliser required the smallest yield to breakeven in 2009 .
  • Hi-analysis granular P and liquid P had a similar response curve and both types of products performed well.
  • Rock Phosphate product had a very flat response which slightly improved when 30% DAP was added.
Lead research organisation Central West Farming Systems
Host research organisation N/A
Trial funding source GRDC CWF00013
Related program N/A
  • Incitec Pivot Limited Fertilisers, Ausmin, and Agrichem for providing product and technical support
  • Jim Laycock (IPL) for providing liquid inject sowing rig and labour at sowing Jim Cronin and Greg Bell for hosting the trials.
  • Graincorp - grain quality testing Central West Agricentre and AGT Seeds - providing Livingston seed.
  • Jim Cronin and Lindsay Baker (Landmark Forbes) - provided chemical and assistance throughout the year – Gunningbland site
  • NVT team – Frank McRae, Scott Boyd and Paddy Steele for harvest
  • Dr Alan Richardson (CSIRO) - phosphorus soil testing
  • Karen Roberts, Geoff McMaster and Sandy McMaster - field measurements
  • Mark Conyers, Peter Martin, Neil Fettell & Andrew Rice for input throughout the trial
  • Thank you to growers and advisors that par
Other trial partners Not specified
Download the trial report to view additional trial information


Crop type Wheat
Treatment type(s)
  • Fertiliser
  • Fertiliser: Type
Trial type
Trial design

Gunningbland 2009

Sow date 16 June 2009
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

Peak Hill 2009

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Download the trial report to view additional method/treatment information
Trial source data and summary not available
Check the trial report PDF for trial results.
Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Gunningbland, NSW Not specified
Peak Hill, NSW Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Gunningbland, NSW Chromosol
Peak Hill, NSW Sodosol
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 Gunningbland NSW Peak Hill NSW
2009 675.3mm688.5mm
2008 679.3mm690.3mm
2007 652.2mm599.7mm
2006 652.3mm640.4mm
2005 688.3mm705.6mm
2004 661.2mm649.5mm
2003 567.6mm607.3mm
2002 515.2mm599.6mm
2001 541.5mm593.4mm
2000 506.4mm514.6mm
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.

Gunningbland NSW

Peak Hill NSW

Gunningbland NSW


Peak Hill NSW


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

SILO weather estimates sourced from
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 last modified: 26-11-2019 14:40pm AEST