Competitive crops for grass weed control - an alternative option


Research organisaton

Trial details

Researcher(s) N/A
Year(s) 2005
Contributor Birchip Cropping Group
Trial location(s) Marnoo, VIC
Competitive crops for grass weed control - an alternative option locations

To compare the competitive nature of wheat and barley sown at different row spacing and seeding rates on grass weed competition.

Key messages

Increased use of grass selective herbicides in many farming systems has caused increased selection pressure for herbicide resistance in grass weed populations such as annual ryegrass and brome grass. Work conducted by Bill Roy (Agricultural Consulting & Research Services Pty Ltd, York) with GRDC support demonstrates that managing herbicide resistance requires a diversified approach using a number of different tools. Manipulating canopy through seeding rates and row spacing is one of the options being explored by the BCG.

Lead research organisation N/A
Host research organisation N/A
Related program N/A
Acknowledgments N/A
Other trial partners Not specified
Download the trial report to view additional trial information


Crop type Multiple
Treatment type(s)
  • Sowing: Rate
  • Sowing: Row spacing
Trial type Experimental
Trial design Randomised,Replicated,Blocked

Marnoo 2005

Sow date 3 May 2005
Harvest date Not specified
Plot size 3m x 25m
Plot replication Not specified
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
Marnoo, VIC Not specified
Derived trial site soil information
Australian Soil Classification Source
Trial site Soil order
Marnoo, VIC Vertosol
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



Derived climate information

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

Marnoo VIC


Some data on this site is sourced from the Bureau of Meteorology

SILO weather estimates sourced from
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

2005 trial report

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Trial last modified: 09-05-2019 16:14pm AEST