Managing clethodim-resistant ryegrass without oaten hay

2013 - 2014
CC BY 4.0

Research organisatons
Funding source

Trial details

Researcher(s) Gurjeet Gill (University of Adelaide)
Sam Kleemann (University of Adelaide)
Sarah Noack (Hart Field Site Group)
Christopher Preston (University of Adelaide)
Year(s) 2013 - 2014
Contributor Hart Field Site Group
Trial location(s) Hart, SA
Managing clethodim-resistant ryegrass without oaten hay locations
Aims

To conduct a multi-year trial to determine the effects of crop rotation and low, medium and high level herbicide management options to reduce clethodim resistant ryegrass without using hay

Key messages

Whilst most of the herbicide strategies in field peas and canola were effective against ryegrass, resistant-survivors still were present late in the season. The seed set contribution of these individuals to the seedbank will not be fully realised until seedbank sampling is again undertaken in April of this year.

Lead research organisation University of Adelaide
Host research organisation Hart Field Site Group
Trial funding source GRDC UCS00020
Related program N/A
Acknowledgments

The financial assistance of GRDC and the collaboration of Hart Field-Site Group staff are gratefully acknowledged. We also wish to thank Stuart Sherriff (SARDI) and Malinee Thongmee (University of Adelaide) for providing technical assistance


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

Method

Crop types Grain Legume: Field peas Oilseed: Canola
Treatment type(s)
  • Herbicide: Rate
  • Herbicide: Type
Trial type Experimental
Trial design Randomised,Replicated,Blocked

Hart 2013 Field peas

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

Hart 2013 Canola

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

Hart 2014 Canola

Sow date 15 May 2014 15 May 2014
Harvest date Not specified
Plot size 4m x 10m
Plot replication 3

Hart 2014 Field peas

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

Download results

Trial results Canola

@T1: 6WAS @T2: 12WAS @T3: 17WAS
# Variety
Treatment 1
Grain yield (t/ha) Ryegrass heads (heads/m2) Ryegrass density (plants/m2) Ryegrass density (plants/m2) Ryegrass density (plants/m2)
1 ATR-Stingray Canola Trifluralin (1.6 L/ha) + clethodim (500 mL/ha) 1.37 34 55 58 13
1 ATR-Stingray Canola Triallate (2.0 L/ha) + propyzamide (1.0 L/ha) 1.41 23 24 23 6
1 ATR-Stingray Canola Propyzamide + clethodim + CT (glyphosate) 1.47 23 12 19 6
1 ATR-Stingray Canola
2 ATR-Stingray Canola
2 ATR-Stingray Canola
2 ATR-Stingray Canola
2 ATR-Stingray Canola
3 ATR-Stingray Canola
3 ATR-Stingray Canola
3 ATR-Stingray Canola
3 ATR-Stingray Canola

Grain yield t/ha


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Ryegrass density plants/m2


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Ryegrass heads heads/m2


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Trial results Kaspa peas

@T1: @T2: @T3:
# Variety
Treatment 1
Grain yield (t/ha) Ryegrass heads (heads/m2) Ryegrass density (plants/m2) Ryegrass density (plants/m2) Ryegrass density (plants/m2)
1 Kaspa Field Pea Trifluralin (1.6 L/ha) + clethodim (700 mL/ha) 2.18 17 48 24 5
1 Kaspa Field Pea Triallate (2.0 L/ha) + propyzamide (1.0 L/ha) + trifluralin (1.6 L/ha) + clethodim (0.7 L/ha) + CT (paraquat) 2.24 0 3 3 0
1 Kaspa Field Pea Triallate + propyzamide + trifluralin + clethodim(2×) + Factor (180 g/ha) + CT 2.11 0 1 2 0
1 Kaspa Field Pea
2 Kaspa Field Pea
2 Kaspa Field Pea
2 Kaspa Field Pea
2 Kaspa Field Pea
3 Kaspa Field Pea
3 Kaspa Field Pea
3 Kaspa Field Pea
3 Kaspa Field Pea

Grain yield t/ha


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Ryegrass density plants/m2


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Ryegrass heads heads/m2


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Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Hart, SA Calcarosol
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Hart, SA Chromosol
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 Hart SA
2014 638.6mm
2013 622.8mm
2012 654.6mm
2011 683.8mm
2010 686.7mm
2009 669.9mm
2008 633.9mm
2007 649.9mm
2006 651.2mm
2005 675.4mm
2004 633.0mm
2003 652.2mm
2002 649.4mm
2001 674.5mm
2000 625.6mm
National soil grid Source: CSIRO/TERN
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

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Climate

Hart SA 2014


Observed climate information

Rainfall trial gsr (mm) 280mm

Derived climate information

Hart SA

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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 last modified: 09-12-2019 19:33pm AEST