Plant growth regulators in wheat


Research organisaton

Trial details

Researcher(s) Sarah Noack and Peter Hooper (Hart Field Site Group)
Year(s) 2013
Contributor Hart Field Site Group
Trial location(s) Site 5, Hart, SA
Plant growth regulators in wheat locations

To measure the effect of plant growth regulants and their interaction with nitrogen on wheat grain yield and quality, in the absence of lodging.

Key messages
  • Plant growth regulators had no significant impact on wheat grain yield.
  • The only grain quality parameter to be influenced by PGR or nitrogen application was grain protein.
Lead research organisation Hart Field Site Group
Host research organisation Hart Field Site Group
Related program N/A
Acknowledgments N/A
Other trial partners Not specified
Download the trial report to view additional trial information


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

Hart 2013

Sow rate or Target density Emu Rock wheat @ 75 kg/ha rate
Sow date 28 May 2013
Harvest date Not specified
Plot size 2m x 6m
Plot replication Not specified

DAP/Urea (27:12) @ 90 kg/ha

Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

# Treatment 1
Protein (%) Grain yield (t/ha) Test weight (kg/hL) Screenings (%)
1 No PGR 0 kg N/ha 12.6 2.6 81.6 4.8
2 No PGR 46 kg N/ha 14 2.4 80.2 4.5
3 PGR + 0 kg N/ha 13.5 2.3 80.9 5.4
4 PGR + 46 kg N/ha 14.4 2.45 79.6 4.7

Grain yield t/ha


Protein %


Screenings %


Test weight kg/hL

Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Site 5, Hart, SA Calcarosol
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



Site 5, Hart SA 2013

Observed climate information

Rainfall trial gsr (mm) 303mm

Derived climate information

Site 5, Hart SA


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

SILO weather estimates sourced from
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: 08-06-2018 14:11pm AEST