Managing clethodim-resistant ryegrass without oaten hay

2013 - 2014

Research organisatons
Funding source

Trial details

Researcher(s) Sam Kleemann, Gurjeet Gill and Chris Preston (University of Adelaide) and Sarah Noack (Hart Field Site Group),
Year(s) 2013 - 2014
Contributor Hart Field Site Group
Trial location(s) Site 5, 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 Kaspa peas
Canola
Treatment type(s)
  • Herbicide: Type
  • Herbicide: Rate
Trial type Experimental
Trial design Randomised,Replicated,Blocked

Hart 2013 Kaspa 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 Kaspa 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
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

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Climate

Site 5, Hart SA 2014


Observed climate information

Rainfall trial gsr (mm) 280mm

Derived climate information

Site 5, 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