Application of variable rate MAP

CC BY 4.0

Research organisaton
Funding source

Trial details

Researcher(s) Nicole Dimos (SPAA)
Neil McMillan (Central West PA Group Facilitator)
Year(s) 2010
Contributor Society of Precision Agriculture Australia
Trial location(s) Rankin Springs, NSW
Application of variable rate MAP locations

To assess the impact of variable rate application of MAP fertilizer.

Key messages

The objective of this GRDC / SPAA funded project is to increase the level of adoption of PA 'beyond guidance' by broadacre farmers. The project specifically aims to increase the level of adoption of variable rate (VR) by growers in the project to 30% by 2013.This goal will be achieved by demonstrating how to use PA tools to growers at a regional level and by increasing the skills of growers and industry in PA to a level where they can then use PA tools in their farming systems to achieve economic, environmental and social benefits.

Lead research organisation N/A
Host research organisation Society of Precision Agriculture Australia
Trial funding source GRDC SPA000010
Related program N/A

Matt and Andy Ryan, Neil McMillian CWFS, Leighton Wilksch - SPAA Grower groups manager, Barry Haskin - NSW Industry & Investment, James Austin, Ian Packer - Lachlan CMA, Tim Neale & ANdrew Whitlock - The project was funded by the GRDC

Other trial partners Not specified
Download the trial report to view additional trial information


Crop type Wheat
Treatment type(s)
  • Fertiliser: Rate
Trial type Precision agriculture
Trial design Not applicable

Rankin Springs 2010

Sow date 4 June 2011 4 June 2010
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

two strips of 0 and 100kg/ha

Download the trial report to view additional method/treatment information

Download results

Trial source data unavailable: Trial may be in progress or trial results have not been recorded.

Trial results Table 1

# Treatment 1
Treatment 2
1 0kg/ha 100kg/ha
Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Rankin Springs, NSW Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Rankin Springs, NSW Kandosol
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 Rankin Springs NSW
2010 609.5mm
2009 511.0mm
2008 499.6mm
2007 451.5mm
2006 522.7mm
2005 549.9mm
2004 491.7mm
2003 473.1mm
2002 451.2mm
2001 500.8mm
2000 455.7mm
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.

Rankin Springs NSW

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

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: 20-09-2019 17:24pm AEST