Variable rate nitrogen using satellite imagery

CC BY 4.0

Research organisaton
Funding source

Trial details

Researcher(s) Nicole Dimos (SPAA)
Fiona Hart (Riverine Plains)
Andrew Whitlock (
Year(s) 2011
Contributor Society of Precision Agriculture Australia
Trial location(s) Dookie, VIC
Variable rate nitrogen using satellite imagery locations

To utilise satellite imagery technology for determining variable rate nitrogen applications.

Key messages

The NDVI map has a strong correlation to the final yield, which indicates that the variable rate nitrogen did not achieve the goal of levelling out crop yield. This may be due to the dry finish to the season. This result does however confirm the concept of using in-season satellite imagery (typically late July, early August) o manage final yield through a variable rate intervention.

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

This project was funded by the Grains Research and Development Corporation (GRDC).

Other trial partners Mark Harmer (cooperating farmer)
Download the trial report to view additional trial information


Crop type Wheat
Treatment type(s)
  • Soil: Type
Trial type Precision agriculture
Trial design Not applicable

Dookie 2011

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

75 to 150kg/ha Urea. Applied 18th Septemer 2011.

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
Dookie, VIC Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Dookie, VIC 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 Dookie VIC
2011 564.1mm
2010 533.2mm
2009 461.4mm
2008 521.1mm
2007 508.3mm
2006 531.5mm
2005 511.6mm
2004 454.8mm
2003 466.5mm
2002 417.2mm
2001 472.5mm
2000 467.0mm
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.

Dookie VIC

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: 30-09-2019 16:13pm AEST