Control of clethodim resistant ryegrass with pre-emergent herbicides

2012
CC BY 4.0

Research organisaton
Funding source

Trial details

Researcher(s) Peter Boutsalis (UoA)
Gurjeet Gill (UoA)
Peter Hooper (Hart)
Sam Kleemann (UoA)
Christopher Preston (UoA)
Year(s) 2012
Contributor Hart Field Site Group
Trial location(s) Hart, SA
Control of clethodim resistant ryegrass with pre-emergent herbicides locations
Aims

To investigate various pre-emergent options to improve the control of Group A resistant ryegrass in canola.

Key messages
  • Measurements in August showed clethodim to give 82% control and pre-emergent treatments to give 85% control of annual ryegrass.
  • Averaged across the trial the ryegrass still set 15 heads per square metre.
Lead research organisation Hart Field Site Group
Host research organisation Hart Field Site Group
Trial funding source GRDC
Related program N/A
Acknowledgments

This trial was funded by GRDC & conducted in collaboration with Hart & Birchip Cropping Groups & The University of Adelaide.


Other trial partners BCG and The University of Adelaide
Download the trial report to view additional trial information

Method

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

Hart 2012

Sow rate or Target density Clearfield canola
Sow date 31 May 2012
Harvest date Not specified
Plot size 1.75m x 12m
Plot replication Not specified
Fertiliser

DAP Zn 2% @ 80kg/ha

Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

# Treatment 1
Plant density (plants/m2)
1 Trifluralin 480 1.5L/ha + tri-allate 3.0L/ha (IBS) 5
2 Experimental 1 (IBS) 3
3 Outlook 1.0L/ha (IBS) 5
4 Outlook 0.7L/ha (IBS) + 0.5L/ha (PSPE) 2
5 Propyzamide 1.0kg/ha 50% (IBS) + 50% (PSPE) 3
6 Propyzamide 1.0kg/ha 50% (PSPE) + 50% (3-4 leaf) + clethodim 0.5L/ha (POST) 26
7 Propyzamide 1.0kg/ha (PSPE – before rain) 22
8 Propyzamide 1.0kg/ha (3-4 leaf) + clethodim 0.5L/ha (POST) 50
9 Dual Gold 0.5L/ha 50% (IBS) + 50% (PSPE) 9
10 Dual Gold 0.5L/ha 50% (PSPE) + 50% (3-4 leaf) + clethodim 0.5L/ha (POST) 41
11 Dual Gold 0.5L/ha (PSPE – before rain) 33
12 Dual Gold 0.5L/ha (3-4 leaf) + clethodim 0.5L/ha (POST) 34
13 Clethodim 0.5L/ha (POST) 32
14 Butroxydim 180g/ha (POST) 38
15 Clethodim 0.5L/ha + butroxydim 180g/ha (POST) 39

Plant density plants/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
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 2012


Observed climate information

Rainfall trial gsr (mm) 168mm

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: 06-06-2019 10:30am AEST