Late nitrogen in wheat: better late than never? How late is too late?

2013
CC BY 4.0

Research organisaton

Trial details

Researcher(s) Ben Cameron (La Trobe University)
Year(s) 2013
Contributor Southern Farming Systems
Trial location(s) Westmere, VIC
Late nitrogen in wheat: better late than never? How late is too late? locations
Aims

 To test how late we can apply nitrogen to wheat to achieve the highest protein and yield in a milling variety. 

Key messages
  • Apply nitrogen early (stem elongation) for yield and later (head emergence) for protein.
  • Nitrogen decisions should be made as the season unfolds because a good finish can make all the difference.
  • Given the total amount of nitrogen applied to the crop and the soft finish, all treatments met APW specification for protein (above 10.5%).
  • There was no significant difference in yield or protein between the different urea, UAN and liquid urea.
  • There was also no significant difference between the 25 kg N/ha and the 50 kg N/ha rates for yield, however protein was increased.
     
Lead research organisation N/A
Host research organisation N/A
Related program N/A
Acknowledgments

Graeme McCrow for the use of his paddock.
 


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

Method

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

Westmere 2013

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

Download results

Trial results Table 1

# Variety
Treatment 1
Treatment 2
Screenings (%) Protein (%) Grain yield (t/ha)
1 Forrest GS32 25 kgN/ha 2.3 10.87 5.62
2 Forrest GS32 50 kgN/ha 2.4 11.52 5.52
3 Forrest GS39 25 kgN/ha 2.4 11.19 5.45
4 Forrest GS39 50 kgN/ha 2.5 11.33 5.42
5 Forrest GS55 50 kgN/ha 2.3 12.28 5.41
6 Forrest GS70 50 kgN/ha 2.8 11.49 5.27
7 Forrest GS70 25 kgN/ha 2 10.88 5.25
8 Forrest GS55 25 kgN/ha 2.6 11.47 5.16

Grain yield t/ha


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Protein %


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Screenings %


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Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Westmere, VIC Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Westmere, 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 Westmere VIC
2013 451.8mm
2012 466.6mm
2011 494.5mm
2010 483.6mm
2009 416.3mm
2008 394.1mm
2007 381.0mm
2006 367.4mm
2005 388.6mm
2004 392.0mm
2003 416.1mm
2002 402.3mm
2001 451.9mm
2000 441.1mm
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

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Climate

Derived climate information

No observed climate data available for this trial.
Derived climate data is determined from trial site location and national weather sources.

Westmere VIC

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Some data on this site is sourced from the Bureau of Meteorology

SILO weather estimates sourced from https://www.longpaddock.qld.gov.au/silo/
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

2013 trial report



Trial last modified: 23-10-2019 11:46am AEST