Barley growth regulator trial


Research organisaton

Trial details

Researcher(s) Vicky Rush (Elders VP)
Year(s) 2003
Contributor Southern Farming Systems
Trial location(s) Site 6, Lake Bolac, VIC
Barley growth regulator trial locations

To assess the effect of a nuber of different growth regulators over a rang of dates and timings on crop height and lodging in barley. To evaluate the effect of growth regulators on grain yield and protien. 

Key messages

The control, and both Cycocel ®treatments produced very similar results, and there appears to be no major difference between any of these treatments. The Terpal ® treatment had a slightly lower yield, lower retention and much higher screenings than the control and Cycocel ® treatments, however this may be due to disease hotspots in these treatments. I believe the use of growth regulators in barley still requires more work to confirm product selection, rates and timings for Australian conditions.

Lead research organisation N/A
Host research organisation N/A
Related program N/A
Acknowledgments N/A
Other trial partners Not specified
Download the trial report to view additional trial information


Crop type Barley
Treatment type(s)
  • Growth regulator: Type
  • Growth regulator: Rate
  • Growth regulator: Timing
Trial type Experimental
Trial design Randomised,Replicated

Lake Bolac 2003

Sow date 15 May 2003
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

# Variety
Treatment 1
Protein (%) Grain yield (t/ha) Screenings (%) Retention (%)
1 Gairdner Caramba ® 13.4 5.75 7 69.4
2 Gairdner Cycocel ® @ 500 ml/ha 12.9 4.85 13.5 49
3 Gairdner Cycocel ® @ 1 Lt/ha 12.9 4.85 10.2 57.5
4 Gairdner Control 13.2 4.64 12.9 51.6
5 Gairdner Terpal ® 13.7 4.51 16.3 42.6

Grain yield t/ha


Protein %


Retention %


Screenings %

Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Site 6, Lake Bolac, VIC Not specified
Derived trial site soil information
Australian Soil Classification Source
Trial site Soil order
Site 6, Lake Bolac, VIC Sodosol
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 6, Lake Bolac VIC


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.

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Trial last modified: 14-11-2019 14:26pm AEST