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Use of gibberellic acid to increase dry matter production of dual purpose wheat and pasture

2007
CC BY 4.0

Research organisation
Southern Farming Systems

Trial details

Researcher(s) Brett Davey (SFS/TIAR)
Geoff Dean (SFS/TIAR)
Simon Munford (DPIW)
Year(s) 2007
Contributor Southern Farming Systems
Trial location(s) Cressy, TAS
Use of gibberellic acid to increase dry matter production of dual purpose wheat and pasture locations
Aims

To quantify the effects of ProGibb on dry matter production of dual purpose wheat and to assess the effects on subsequent plant recovery and wheat grain yield.

Key messages
  • The effect of application of gibberellic acid (ProGibb) on dry matter production and subsequent grain yield of dual purpose wheat was investigated. There were large and significant increases in DM production when Pro‐Gibb was applied.
  • A high rate (40g/ha) resulted in a more rapid increase in DM but by the 4th week all ProGibb treatments had produced significantly higher DM than the nil treatment.
  • Average dry matter increases were around 30%, i.e. from 1.26tDM/ha to an average of 1.64t/ha.
  • In contrast seven weeks after application the nil treatment produced significantly more DM than the ProGibb treatments i.e. ProGibb treated plants appeared to suffer a payback from the extra growth. Importantly this effect was not carried through to grain harvest with no significant differences between treatments being measured.
Lead research organisation N/A
Host research organisation N/A
Related program N/A
Acknowledgments

Will, Tom and Mike Green
Other trial partners Not specified
Download the trial report to view additional trial information

Method

Crop type Cereal (Grain): Wheat
Treatment type(s)
  • Fertiliser : Application Method
  • Growth regulator : Rate
Trial type Experimental
Trial design Randomised,Replicated,Blocked

Cressy 2007

Sow date 10 April 2007
Harvest date 23 January 2008
Plot size 10m x 2m
Plot replication Not specified
Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

# Variety
 Treatment 1
Grain yield (t/ha) Dry matter (t/ha)
1 █ Mackellar █ ProGibb 40g/ha 3.85 0.93
2 █ Mackellar █ ProGibb 20g/ha + foliar spray 3.91 0.85
3 █ Mackellar █ ProGibb 20g/ha 4.31 0.98
4 █ Mackellar █ ProGibb 10g/ha 4.02 1.03
5 █ Mackellar █ Nil + foliar spray 4.1 1.15
6 █ Mackellar █ Nil 4.49 1.19

Grain yield t/ha

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Dry matter t/ha

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Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Cressy, TAS Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Cressy, TAS Sodosol
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 Cressy TAS
2007
2006
2005
2004
2003
2002
2001
2000

Climate

Derived climate information

No observed climate data available for this trial.
Derived climate data is determined from trial site location and national weather sources.

Cressy TAS

NOTE: Exact trial site locality unknown - Climate data may not be accurate
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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

2007 trial report



Trial last modified: 20-11-2019 10:15am AEST