Wheat grain yield response to elevated temperature and nitrogen


Research organisatons
Funding source

Trial details

Researcher(s) Mariano Cossani and Victor Sadras (SARDI)
Year(s) 2017
Contributor Hart Field Site Group
Trial location(s) Site 5, Hart, SA
Wheat grain yield response to elevated temperature and nitrogen locations

To study the effect of elevated temperature, sowing time, variety, and N rate on wheat yield.

Key messages
  • Elevated temperature reduced yield by 0.3 – 0.4 t/ha per degree (°C) higher during pre- and post-flowering. •
  • The effect of temperature was offset by grain number per m2 .
  • Higher N rates may partially mitigate the effect of elevated temperature..
Lead research organisation South Australian Research and Development Institute
Host research organisation N/A
Trial funding source GRDC DAS00166
Related program N/A

Funding for the establishment, maintenance, and analysis of field trials has been provided by the GRDC-SARDI bilateral (DAS00166) and Yitpi Foundation. Special thanks are given to the Hart FieldSite Group, J. Fernandez-Lopez, G. Sepulveda and B. Sleep for their support and collaboration with the field and lab activities. We also acknowledge the help of Longreach and Australian Grain Technologies for their provision of the germplasm.

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


Crop type Wheat
Treatment type(s)
  • Fertiliser
  • Fertiliser: Rate
  • Sowing
  • Sowing: Timing
  • Variety
  • Variety: Type
Trial type Experimental
Trial design Randomised,Replicated,Blocked

Hart 2017

Sow date 26 May 2017
Harvest date Not specified
Plot size 1.75m x 6m
Plot replication Not specified


  • @ 0 kg N/ha, 2-4 leaf & GS31
  • @ 100 kg N/ha, 2-4 leaf & GS31
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
Site 5, Hart, SA Not specified
Derived trial site soil information
Australian Soil Classification Source
Trial site Soil order
Site 5, Hart, SA Chromosol
National soil grid Source
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.

Site 5, Hart SA


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 last modified: 11-06-2019 15:26pm AEST