Assessing the impact of nitrogen treatments on wheat canopies

2005
CC BY 4.0

Research organisaton

Trial details

Researcher(s) Colin Hacking (SFS)
Gary Sheppard (SFS)
Rohan Wardle (SFS)
Year(s) 2005
Contributor Southern Farming Systems
Trial location(s) Hamilton, VIC
Assessing the impact of nitrogen treatments on wheat canopies locations
Aims

The aim of the trial is to identify the best nitrogen timing and rate in order to maximize profits for the widely grown cultivar Kellalac, in the local higher rainfall conditions of southern Victoria.

Key messages

With no significant difference in yield across this trial (Table 4-11) it appears that the high soil nitrogen and variable season may have been too influential to repeat previous years’ results. Findings from this trial should still be reviewed, but not used solely to make strategic nitrogen management decisions in the future. Possibly one key finding may be that high N paddocks need little if any follow up N past crop emergence, depending on paddock history and seasonal outlook. Late leaf rust was present throughout this trial,
however it is not known if this was influential in determining yield outcomes. 

Lead research organisation N/A
Host research organisation N/A
Related program N/A
Acknowledgments

The authors would like to thank the sponsors for providing both seed and fungicide, ensuring that the trial took place. Thanks to Mick Keating (DPI) for sowing and harvesting the trial.


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

Hamilton 2005

Sow date 24 May 2005
Harvest date Not specified
Plot size 10m x 1.7m
Plot replication Not specified
Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

# Variety
Treatment 1
Screenings (%) Test weight (kg/hL) Protein (%) Grain yield (t/ha) Retention (%)
1 Kellalac 20kgN/ha at sowing + 80kgN/ha at GS31 1.98 71.85 11.95 5.64 97.96
2 Kellalac 20kgN/ha at sowing + 80 kgN/ha at GS39 2.95 71.22 12.55 5.58 96.94
3 Kellalac 20kgN/ha at sowing + 45kgN/ha at GS31 + 35kgN/ha at GS39. 2.5 71.38 12.6 5.22 97.42
4 Kellalac 20kgN/ha at sowing + 45kgN/Ha at GS31 2.8 71.08 12.05 5.72 97.1
5 Kellalac 20kgN/ha at sowing 2.41 71.3 11.85 5.49 97.56

Grain yield t/ha


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Protein %


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Retention %


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Screenings %


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Test weight kg/hL


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Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Hamilton, VIC Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Hamilton, VIC Kurosol
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 Hamilton VIC
2005 569.1mm
2004 573.7mm
2003 578.0mm
2002 564.0mm
2001 559.7mm
2000 510.3mm
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.

Hamilton VIC

NOTE: Exact trial site locality unknown - Climate data may not be accurate
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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

2005 trial report



Trial last modified: 18-11-2019 09:47am AEST