Canola herbicide systems, pre-emergent herbicides and variety hybridity: their effect on the control of annual ryegrass

2017

Research organisation
Funding sources

Trial details

Researcher(s) Steve Tillbrook
Matt Willis
Year(s) 2017
Contributor Northern Agri Group
Trial location(s) Buntine,
Arrino, WA
Cunderdin, WA
Canola herbicide systems, pre-emergent herbicides and variety hybridity: their effect on the control of annual ryegrass locations
Aims

To compare the yield, profitability and level of weed control of three canola herbicide systems (TT, RR and RT) using a combination of pre-emergent herbicides and canola varieties. The benefit of hybrid canola varieties compared to open-pollinated (OP) varieties was also investigated in the northern WA Wheatbelt by Bayer Crop Science and Nufarm Australia 

Key messages

• The highest gross margin and greatest level of weed control were both achieved by using a hybrid Roundup Ready® (RR) canola variety in an RR canola system.
• Triazine tolerant (TT) canola systems are highly reliant on the annual ryegrass (ARG) being susceptible to clethodim. In a site with confirmed clethodim resistant populations the level of weed control was commercially unacceptable in all TT treatments.
• The dual herbicide tolerant (RT) canola system treatments generated a higher gross margin compared to traditional TT systems when used in a situation with a high weed burden.
• The addition of propyzamide to a TT canola system was shown to be beneficial across all three trials, with improved weed control and higher gross margins compared to trifluralin.

Lead research organisation N/A
Host research organisation N/A
Trial funding source Bayer
Trial funding source Nufarm Ltd
Related program N/A
Acknowledgments

Thanks to the Mike Dodd, James Dempster and Chris Syme for hosting the trial sites. Thanks to Living Farm for sowing, spraying and harvesting the trial. Thanks to Imtrade Australia for their contribution at the Liebe Group site. Thanks to Rick Horbury (Bayer Crop Science) for setting up the trial and assisting throughout the season. Thanks to Debbie Gillam (MIG), Carlie Rowe (MIG), Michael MacPherson (Imtrade Australia), Steve Tillbrook (Nufarm), Terry Alderdice (Syngenta) and Tabea Becker (Bayer Crop Science) for
assisting with assessments throughout the life of the trial. Thanks to the Liebe Group and Western Australian No-Tillage Farmers Association for access to their results for comparison.


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

Method

Crop type Oilseed: Canola
Treatment type(s)
  • Crop : Variety
  • Herbicide : Rate
  • Herbicide : Timing
  • Herbicide : Type
Trial type Experimental
Trial design Replicated

Buntine 2017

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Sow rate or Target density 1.7 kg/ha 3000TR, 1.4 kg/ha InVigor T4510, 1.7 kg/ha InVigor 3520RR, or 1.9 kg/ha ATR-Bonito (target 35 plants per m2)
Sow date 24 April 2017
Harvest date Not applicable
Plot size 20m x 2m
Plot replication 3
Psuedoreplication N
Fertiliser

24/04/17: 100 kg/ha Gusto Gold + 80 kg/ha urea

15/08/17: 50 L/ha UAN

Seed treatment EverGol® Xtend 65 mL/100 kg + Poncho® Plus 500 mL/100 kg

Arrino 2017

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Sow rate or Target density 1.7 kg/ha 3000TR, 1.4 kg/ha InVigor T4510, 1.7 kg/ha InVigor 3520RR, or 1.9 kg/ha ATR-Bonito (target 35 plants per m2)
Sow date 3 May 2017
Harvest date Not applicable
Plot size 20m x 2m
Plot replication 3
Psuedoreplication N
Fertiliser

03/05/17: 120 kg/ha Gusto Gold + 50 kg/ha urea

15/08/17: 60 L/ha UAN

Seed treatment EverGol® Xtend 65 mL/100 kg + Poncho® Plus 500 mL/100 kg

Cunderdin 2017

?>
Sow rate or Target density 1.7 kg/ha 3000TR, 1.4 kg/ha InVigor T4510, 1.7 kg/ha InVigor 3520RR, or 1.9 kg/ha ATR-Bonito (target 35 plants per m2)
Sow date 28 April 2017
Harvest date Not applicable
Plot size 20m x 2m
Plot replication 3
Psuedoreplication N
Fertiliser

28/04/17: 120 kg/ha Gusto Gold + 50 kg/ha urea

15/08/17: 80 L/ha UAN

Seed treatment EverGol® Xtend 65 mL/100 kg + Poncho® Plus 500 mL/100 kg
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
Buntine, Not specified
Arrino, WA Not specified
Cunderdin, WA Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Buntine, Kandosol
Arrino, WA Sodosol
Cunderdin, WA Tenosol
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 Buntine Arrino WA Cunderdin WA
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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.

Buntine WA

Arrino WA

Cunderdin WA

Buntine WA

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

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

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

2017 trial report



Trial last modified: 16-06-2025 17:37pm AEST