Nitrogen rate and timing at Frances

CC BY 4.0

Research organisaton
Funding source

Trial details

Researcher(s) Charlton Jeisman (SARDI)
Year(s) 2012
Contributor MacKillop Farm Management Group
Trial location(s) Frances, VIC
Nitrogen rate and timing at Frances locations

To assess the impact of applying additional Nitrogen at different rates and timings on the grain yield of Bolac wheat.

Key messages
  • Grain yields of wheat were higher when additional nitrogen was applied at sowing compared to when applied at GS31.
  • Timing of nitrogen application is essential to maximise plant growth and achieve yield potential.
  • Grain protein was only higher when delayed nitrogen application was applied, which resulted in reduced wheat yield.
  • Starting soil moisture, paddock rotation history and potential yield of crop are important factors to consider when deciding amount of nitrogen to apply and timing.
Lead research organisation MacKillop Farm Management Group
Host research organisation MacKillop Farm Management Group
Trial funding source GRDC MFM00003
Related program National Water Use Efficiency Initiative

Trials were conducted by the SARDI New Variety Agronomy group at Struan. 

Other trial partners SARDI
Download the trial report to view additional trial information


Crop type Wheat
Treatment type(s)
  • Fertiliser: Timing
  • Fungicide: Rate
Trial type Experimental
Trial design Replicated

Frances 2012

Sow rate or Target density 75 kg/ha
Sow date 7 June 2012
Harvest date 27 December 2012
Plot size 8m x 1.6m
Plot replication 5
Paddock history 2011: barley

140 kg/ha 18:13:0:10 at sowing.


6/6/2012: 1.5 l/ha Roundup Max. 7/6/2012: 2.5 l/ha Boxer Gold, 800 ml/ha Diuron. 1/8/2012: 1.5 l/ha Tristar Advance, 250 ml/ha BS1000, 27/8/2012: 1.6 l/ha Buctril MA.


1/8/2012 & 11/9/2012: 200 ml/ha Ambush


16/10/2012: 500 ml/ha Opus, 200 ml/ha BS1000.

Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

# Treatment 1
Treatment 2
Protein (%) Grain yield (kg/ha) Test weight (kg/hL)
1 Nil fertilizer 10.2 4560 82.4
2 25 kg/ha N sowing (7/6/2012) 10.5 4993 82.8
3 25 kg/ha N GS31 (5/9/2012) 10.5 4510 82.8
4 75 kg/ha N sowing (7/6/2012) 10.5 5360 82.7
5 75 kg/ha N GS31 (5/9/2012) 11.8 4626 81.5

Grain yield kg/ha


Protein %


Test weight kg/hL

Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Frances, VIC Brown sandy loam over clay
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Frances, 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 Frances VIC
2012 488.6mm
2011 502.3mm
2010 483.4mm
2009 400.2mm
2008 347.0mm
2007 332.5mm
2006 375.5mm
2005 434.1mm
2004 538.6mm
2003 531.2mm
2002 455.7mm
2001 488.0mm
2000 445.6mm
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



Frances VIC 2012

Observed climate information

Rainfall trial gsr (mm) 343mm

Derived climate information

Frances VIC


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: 15-05-2019 13:41pm AEST