Precision agriculture demonstrations on sowing and fertiliser rates at Bogandillan, Rand


Research organisatons
Funding source
Riverine Plains John Sykes Rural Consulting

Trial details

Researcher(s) John Sykes (John Sykes Rural Consulting)
Year(s) 2011
Contributor Riverine Plains
Trial location(s) Rand, NSW
Precision agriculture demonstrations on sowing and fertiliser rates at Bogandillan, Rand locations
To compare the effects of variable phophorus and sowing rates on the wheat yields. To assess if remote sensing, using Crop Circle normalised difference vegetation index (NDVI) could be used to better assess in-crop nitorgen requirements.
Key messages
Reducing sowing rates to 50 kg/ha did not impact on yield, which is consistant with 2009 trial results. Yield at the site did not respond to applied phosphorus or nitrogen fertiliser even following early plant growth responses.
Lead research organisation John Sykes Rural Consulting
Host research organisation Riverine Plains
Trial funding source GRDC SPA00010
Related program N/A
Acknowledgments Mr R and Mr L Hamilton
Other trial partners Not specified
Download the trial report to view additional trial information


Crop type Cereal (Grain): Wheat
Treatment type(s)
  • Fertiliser: Rate
  • Sowing: Rate
Trial type Demonstration
Trial design Unreplicated

Rand 2011

Sow date 12 May 2011
Harvest date Not specified
Plot size 800m x 29.2m
Plot replication Not specified
Paddock history 2009 -Wheat, 2010 Canola, 2011 Wheat
Fertiliser Fertiliser as per treatments, Nitrogen 50kg/ha plus 40kg/ha as nitrogen rich strips
Herbicide Glyphosate and trifluralin applied to all plots
Soil amelioration pH (H20) 5.9, pH (CaCl2) 5.4
Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

# Variety
Treatment 1
Treatment 2
Protein (%) Grain yield (t/ha)
1 Lincoln wheat 70kg/ha seed MAP 50kg/ha 10.4 3.1
2 Lincoln wheat 35kg/ha seed MAP 50kg/ha 11.2 3.2
3 Lincoln wheat 50kg/ha seed MAP 50kg/ha 11.1 3.1
4 Lincoln wheat 70kg/ha seed NO Fertiliser 10.9 2.9
5 Lincoln wheat 70kg/ha seed MAP 30kg/ha 11.1 2.9
6 Lincoln wheat 70kg/ha seed MAP 50kg/ha 11.1 2.9
7 Lincoln wheat 70kg/ha seed MAP 75kg/ha 11.1 2.9
8 Lincoln wheat 70kg/ha seed MAP 100kg/ha 11.4 2.9

Grain yield t/ha


Protein %

Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Rand, NSW Red chromosol
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Rand, 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 Rand NSW
2011 577.7mm
2010 593.0mm
2009 532.8mm
2008 527.6mm
2007 504.1mm
2006 537.7mm
2005 554.5mm
2004 469.5mm
2003 434.0mm
2002 416.2mm
2001 463.4mm
2000 475.6mm
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



Rand NSW 2011

Observed climate information

Rainfall trial gsr (mm) 194mm

Derived climate information

Rand 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 report and links

2011 trial report