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Improved yield of wheat: changes in crop physiology and implications for agronomy

2012
CC BY 4.0

Research organisations
Funding source
Hart Field Site Group South Australian Research and Development Institute
<abbr title='Grains Research and Development Corporation'>GRDC</abbr>

Trial details

Researcher(s) Chris Lawson (SARDI)
Victor Sadras (SARDI)
Year(s) 2012
Contributor Hart Field Site Group
Trial location(s) , SA
, SA
Hart, SA
Improved yield of wheat: changes in crop physiology and implications for agronomy locations
Aims

To answer the following questions: 

  • What are the main changes in crop traits behind yield improvement?
  • Are there agronomic practices that need to be adjusted to account for these changes?
Key messages
  • Modern wheat varieties have a higher demand for nitrogen and agronomic practices need to take this into account.
  • The most critical period for setting grain yield potential is between stem elongation (GS31) and flowering.
  • Current varieties are well beyond the potential 20kg grain/ha per mm water benchmark. This needs to be updated to 24kg grain/ha per mm water.
Lead research organisation South Australian Research and Development Institute
Host research organisation Hart Field Site Group
Trial funding source GRDC
Related program N/A
Acknowledgments

Funded by the GRDC Water Use Efficiency Initiative.
Other trial partners Not specified
Download the trial report to view additional trial information

Method

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

2012

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

2012

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

Hart 2012

Sow date Unknown
Harvest date Unknown
Plot size Not specified
Plot replication Not specified
Download the trial report to view additional method/treatment information
Trial source data and summary not available
Check the trial report PDF for trial results.
Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
, SA Not specified
, SA Not specified
Hart, SA Calcarosol
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
, SA Chromosol
, SA Chromosol
Hart, SA Chromosol
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 SA SA Hart SA
2012
2011
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2002
2001
2000

Climate

Hart SA 2012

Observed climate information

Rainfall trial gsr (mm) 168mm

Derived climate information

SA

SA

Hart SA

SA

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SA

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Hart SA

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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

2012 trial report



Trial last modified: 16-01-2023 14:56pm AEST