Northparkes mine broadacre trial

CC BY 4.0

Research organisaton

Trial details

Researcher(s) Ken Motley (NSW DPI)
Andrew Rice (Ivey ATP)
Karen Roberts (Ivey ATP)
Year(s) 2006
Contributor Central West Farming Systems
Trial location(s) North Parkes, NSW
Northparkes mine broadacre trial locations

To explore management impacts on wheat grain quality.

Key messages
  • Severe drought conditions affected the results of this trial (grain yields 0.60 to 1.02t/ha), with only 130 mm for April – October and 171mm for the calendar year recorded at the trial site.
  • The wheat variety Ventura, showed the benefits of quicker maturity over Sunstate in such extreme seasonal conditions. 􀂃 Plant density was not found affect grain yield or quality in a very tough year.
  • Precision agriculture can be used for on-farm trials to produce statistically valid results, thereby offering an alternative to small plot trials.
  • The broadacre trial will be repeated in 2007 at Northparkes Mine.
Lead research organisation Central West Farming Systems
Host research organisation N/A
Related program N/A

Northparkes Mines for the provision of the trial site and machinery and labour for sowing and harvesting.

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


Crop type Wheat
Treatment type(s)
  • Variety
  • Variety: Type
Trial type Experimental
Trial design Randomised,Replicated,Blocked

North Parkes 2006

Sow date Not specified
Harvest date Not specified
Plot size 2m x 12m
Plot replication Not specified
Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

# Variety
Treatment 1
Test weight (kg/hL) Protein (%) Grain yield (t/ha) Moisture (%) Screenings (%)
1 Sunstate Target density 75 plant/m2 81 15.38 0.6 8 1.85
2 Sunstate Target density 150 plant/m2 79.88 15.88 0.6 8.03 1.7
3 Sunstate Target density 200 plant/m2 79.75 16.08 0.53 8.03 2.08
4 Ventura Target density 75 plant/m2 81.38 14.43 10.1 8 1.13
5 Ventura Target density 150 plant/m2 80.63 14.9 1.02 7.98 1.3
6 Ventura Target density 200 plant/m2 80.63 14.95 1 7.98 1.38

Grain yield t/ha


Moisture %


Protein %


Screenings %


Test weight kg/hL

Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
North Parkes, NSW Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
North Parkes, 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 North Parkes NSW
2006 581.5mm
2005 638.3mm
2004 614.0mm
2003 551.7mm
2002 560.8mm
2001 569.1mm
2000 489.9mm
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.

North Parkes 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: 02-05-2018 11:58am AEST