Common sowthistle survey to guide future weeds research

Grower input sought about tactics to control problem weed

Weeds
Common sowthistle is one of the most widespread broadleaf weeds in Australia's northern cropping region. Once predominantly a winter problem, it is now a management challenge in almost all seasons. PHOTO Northern Grower Alliance

Common sowthistle is one of the most widespread broadleaf weeds in Australia's northern cropping region. Once predominantly a winter problem, it is now a management challenge in almost all seasons. PHOTO Northern Grower Alliance

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Survey calls for insights into effective tactics to battle common sowthistle in north.

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Are you a grain grower battling to contain the increasingly problematic weed common sowthistle?

If yes, the Northern Grower Alliance (NGA) group would like to hear from you as part of a survey of growers and farm advisers in southern Queensland and northern New South Wales.

The NGA is assessing current research and future investment options for controlling this weed.

The group's survey can be accessed online and submissions are needed by July 9.

GRDC has produced a video featuring advice about the option of using a double-knock herbicide strategy to control common sowthistle in the north.

GRDC has also created a podcast outlining the integrated weed management tactic of crop competition, which is another option showing promise in suppressing common sowthistle weeds in Queensland trials.

Damaging problem 

Common sowthistle is one of the most widespread broadleaf weeds in the northern cropping region.

Once predominantly a winter problem, it is now a management challenge in almost all seasons.

Although management in-crop can be challenging, control issues are more frequently experienced in fallow situations.

Increasing levels of glyphosate resistance have also become a major threat to achieving 'clean' fallows for growers in southern Queensland and NSW.

Seeking solutions

This month, the NGA - which is a GRDC investment - is conducting a short survey designed to provide a snapshot of current common sowthistle management practices and constraints.

Richard Daniel, from NGA, says the survey will also help determine how much growers know about the weed, as well as knowledge gaps, which will help guide future research.

GRDC Grower Relations Manager - North, Richard Holzknecht, says the short survey is an invaluable opportunity for industry to have input into research investments for one of the most economically significant weeds in the region.

The survey takes 10-15 minutes to complete, can be accessed at https://www.surveymonkey.com/r/FMSPFMR and is open until July 9.

GRDC Research Code NGA0004

More Information: Toni Somes, GRDC, 0436 622 645, toni.somes@grdc.com.au

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