Influence of seeding systems and stubble management on pre-emergent herbicides

2015
CC BY 4.0

Research organisaton
Funding source

Trial details

Researcher(s) Gurjeet Gill (University of Adelaide)
Peter Hooper (Hart Field Site Group)
Sam Kleemann (University of Adelaide)
Sarah Noack (University of Adelaide)
Year(s) 2015
Contributor Hart Field Site Group
Trial location(s) Hart, SA
Influence of seeding systems and stubble management on pre-emergent herbicides locations
Aims

To evaluate the effect of crop stubble management and seeding system on pre-emergent herbicide behaviour and crop safety.

Key messages
  • Pre-emergent herbicides can cause crop damage. Separation of the herbicide from crop seed is essential for crop safety, which is more easily achieved in knife-point & press wheel seeding systems but considerably more difficult with low soil disturbance single discs.
  • Crop stubble can intercept & bind pre-emergent herbicides, which affects crop safety & herbicide efficacy. Low solubility herbicides such as trifluralin have a tendency to bind strongly to crop residues, which reduces the potential for crop damage but also limits its ability to provide effective weed control in situations with heavy stubble load.
  • Choose the right herbicide for the job – not all pre-emergent herbicides behave the same so follow label recommendations closely.
Lead research organisation Hart Field Site Group
Host research organisation Hart Field Site Group
Trial funding source SAGIT
Related program N/A
Acknowledgments

The financial assistance of SAGIT (South Australian Grain Industry Trust) is gratefully acknowledged (H113). We also wish to thank Matt Dare, Tom Robinson and Pete McEwin for their assistance in trial preparation and implementation, and field staff from SARDI (Clare office) for providing technical support.

 


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

Method

Crop type Cereal (Grain): Wheat
Treatment type(s)
  • Herbicide: Timing
  • Sowing: Method
  • Stubble: Management
Trial type Experimental
Trial design Randomised,Replicated,Blocked

Hart 2015

Sow rate or Target density 100 kg/ha Mace wheat
Sow date 3 June 2015
Harvest date Not specified
Plot size 10m x 12m
Plot replication Not specified
Fertiliser
  • DAP/urea (22:14) @ 100 kg/ha at seeding
  • Urea/SOA (33:00:00:11) @ 100 kg/ha 21st June
  • Urea (46:00) @ 80 kg/ha 31st July
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 Not specified
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
2015 597.6mm
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

Derived climate information

No observed climate data available for this trial.
Derived climate data is determined from trial site location and national weather sources.

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

2015 trial report



Trial last modified: 06-06-2019 15:39pm AEST