More crop, less weeds - competitive cereal cultivars have higher yield and suppress weed seed set

2011
CC BY 4.0

Research organisatons
Funding source

Trial details

Researcher(s) Abul Hashem (DAFWA)
Peter Newman (DAFWA)
Year(s) 2011
Contributor West Midlands Group
Trial location(s) Eradu, WA
More crop, less weeds - competitive cereal cultivars have higher yield and suppress weed seed set locations
Aims
  • To evaluate yield and competition with weeds of new wheat cultivars selected by recurrent selection for early vigour compared to common commercial cereal cultivars. 
  • To evaluate current commercial wheat varieties for their ability to suppress weed seed set and to yield under high weed pressure.
Key messages
  • Magenta and Baudin barley were the most competitive cultivars at Eradu, reducing ryegrass seed set by 65% compared to Wyalkatchem.  UA40 reduced ryegrass seed set by 51% which was a similar result to UA47, Mace and Bonnie Rock.  Leaf disease in UA47 reduced its competitive ability.  The cultivar UA39 is a very tall variety, and visually it appeared to significantly compete with ryegrass.  However, tiller counts and biomass measurements reveal that this cultivar is not as competitive as it appears. 
  • While the UA cultivars may be useful as germplasm for future breeding programs, perhaps the most significant aspect of this research is the competitive ability of currently available cultivars.  Magenta is a high yielding, competitive wheat variety that is a useful tool for weedy paddocks.  Baudin Barley was very high yielding at Eradu and also very competitive with weeds.  This weed competition of barley is consistent with past research.  Future research will focus on ribbon / twin row seeding of competitive cultivars at higher seeding rates to maximise yield, profit and weed suppression.
Lead research organisation Department of Agriculture and Food WA
Host research organisation West Midlands Group
Trial funding source GRDC
Related program N/A
Acknowledgments

Thank you to GRDC for supporting this research.  Thank you also to Dr Greg Rebetzke and Dr Gurgeet Gill for their expertise.


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

Method

Crop types Cereal (Grain): Barley Cereal (Grain): Wheat
Treatment type(s)
  • Crop: Type
  • Management systems: Integrated weed management
Trial type
Trial design

Eradu 2011 Barley

Sow rate or Target density Not specified
Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Herbicide Not specified

Eradu 2011 Wheat

Sow rate or Target density 60kg/ha
Sow date 13 April 2011
Harvest date Not specified
Plot size 1.8m x 20m
Plot replication 4
Herbicide

Nil pre-emergent herbicide. One broadleaf spray post-em.

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
Eradu, WA Yellow sandplain
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Eradu, WA Tenosol
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 Eradu WA
2011 114.0mm
2010 85.8mm
2009 89.2mm
2008 121.9mm
2007 106.2mm
2006 69.0mm
2005 83.4mm
2004 86.0mm
2003 87.1mm
2002 71.0mm
2001 36.3mm
2000 117.9mm
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

Loading

Climate

Eradu WA 2011


Observed climate information

Rainfall avg gsr (mm) 401mm

Derived climate information

Eradu WA

Loading
Loading
Loading

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

2011 trial report



Trial last modified: 06-08-2019 07:54am AEST