Durum agronomy – varietal response to nitrogen

CC BY 4.0

Research organisaton
Funding source

Trial details

Researcher(s) Kenton Porker and Rob Wheeler (SARDI)
Year(s) 2011
Contributor Hart Field Site Group
Trial location(s) Site 5, Hart, SA
Durum agronomy – varietal response to nitrogen locations

To examine appropriate management combinations of variety, nitrogen rate and timing, to achieve 13% protein and to minimise downgrading due to excessive screenings.

Key messages
  • Varieties responded similarly in yield and many quality measurements to applied nitrogen, but showed large differences in grain screenings.
  • Large amounts of early applied nitrogen predisposed WID803 with inherent small grain to quality downgrading due to high screenings, varieties with inherent larger grain (Tjilkuri and Caparoi) were not downgraded across N treatments.
  • The strategic approach to nitrogen management was a more effective method to maintain grain size and achieve 13% protein rather than applying all nitroen at stem elongation.
Lead research organisation Hart Field Site Group
Host research organisation N/A
Trial funding source GRDC
Related program N/A
  • An SA Durum Grower’s Association initiative, funded by GRDC.
  • The SA Durum Growers Association thank GRDC and sponsors for funding this research, SARDI Clare staff for trial managemen

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


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

Hart 2011

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
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: 05-06-2019 14:34pm AEST