Prenjori trials - using Yield Prophet for tactical nitrogen responses


Research organisaton

Trial details

Researcher(s) Brad Hortin (CSBP)
Luigi Moreschi (CSBP)
Rich Patterson (CSBP)
Year(s) 2011
Contributor North East Farming Futures
Trial location(s) Perenjori, WA
Prenjori trials - using Yield Prophet for tactical nitrogen responses locations
  • To use yield prophet to help determine rates of nitrogen to apply.
  • To determine the response to Flexi-N in wheat.
Key messages
  • Yield Prophet provided good background information to apply nitrogen during the season. Whilst the nitrogen applica-tion treatment based of Yield Prophet reports was the second highest yielding treatment it did provide a delayed spend on nitrogen. Treatment 4 had exactly the same nitrogen application rate but the timing was far early than treatment 7 (Yield Prophet guided treatment). This does prove that Yield Prophet can help growers to make less risky nitrogen de-cisions without sacrificing yield and grain quality. Obviously with the excellent finishing rainfall the highest nitrogen application was the highest yielding treatment.
  • This site was very responsive to Flexi-N and some very high yields were produced.


Lead research organisation North East Farming Futures
Host research organisation N/A
Related program N/A
  • Shaun Sparkman
  • CSBP research staff, Luigi Moreschi – CSBP, Rich Patterson – CSBP, Brad Hortin – CSBP.

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


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

Perenjori 2011

Sow date 18 May 2011
Harvest date 22 November 2011
Plot size Not specified
Plot replication Not specified

13 Jun - Applied Z13 Flexi-N.

20 Jul - Applied Z30 Flexi-N.


18 May - Sprayed 1.8 l/ha Treflan,


18 May - 300 ml/ha Lorsban.

Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

# Treatment 1
Screenings (%) Hectolitre weight (kg/hL) Protein (%) Grain yield (t/ha)
1 Nil 4 77 7.6 1.42
2 50 Agstar extra (Banded) 4 76 7.4 1.92
3 50 Agstar extra (Banded)+40FN 3 76 7.1 2.5
4 50 Agstar extra (Banded)+40FN+40Fn at Z13 3 77 7.6 3.09
5 50 Agstar extra (Banded)+40FN+40Fn at Z13+40FN at Z30 4 77 8.3 3.8
6 85 Agstar extra (banded)+28FN 3 77 7.2 2.76
7 50 Agstar extra (Banded)+55FN at Z13 and 25FN at Z30 3 76 7.5 3.07

Grain yield t/ha


Hectolitre weight kg/hL


Protein %


Screenings %

Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Perenjori, WA Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Perenjori, WA Tenosol
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 Perenjori WA
2011 247.3mm
2010 197.2mm
2009 220.0mm
2008 228.3mm
2007 189.5mm
2006 242.1mm
2005 242.7mm
2004 226.6mm
2003 231.5mm
2002 203.0mm
2001 242.8mm
2000 266.4mm
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.

Perenjori WA


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: 25-06-2019 12:17pm AEST