Post sowing use of pre-emergent herbicides for annual ryegrass control

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
Post sowing use of pre-emergent herbicides for annual ryegrass control locations
Aims

To evaluate the efficacy of pre-emergent herbicides applied post sowing on ryegrass control and crop safety in wheat with the aim of

a) increasing residual control,

b) improving in-row control and

c) preventing onset of trifluralin resistance.

Key messages
  • Preliminary results have shown that post sowing use of some pre-emergence herbicides can improve control of late emerging ryegrass and could be beneficial as a late salvage exercise where ryegrass has escaped earlier control.
  • Although no damage to the wheat crop was observed, these treatments present a higher risk to crop safety, depending on soil type and rainfall after application.
  • Post sowing use of these herbicides is currently off label & requires further investigation before registration can be granted.
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 and conducted in collaboration with Birchip Cropping Group and 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 Cereal (Grain): Wheat
Treatment type(s)
  • Crop: Type
  • Herbicide: Type
Trial type Experimental
Trial design Randomised,Replicated,Blocked

Hart 2012

Sow date 30 May 2012
Harvest date Not specified
Plot size 1.4m x 10m
Plot replication 3
Fertiliser

DAP Zn 2% @ 70kg/ha

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
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 report and links

2012 trial report



Trial last modified: 06-06-2019 14:15pm AEST