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What is the latest random weed resistance survey telling us about paraquat and 2,4-D?

Widderick, M. J., Owen, M. J., Stephenson, K., Chambers, A. J. and Broster, J. C. (2024) What is the latest random weed resistance survey telling us about paraquat and 2,4-D? GRDC Update .


Article Link: https://grdc.com.au/__data/assets/pdf_file/0039/59...


Take home messages
• Resistance to the Group 22 herbicides paraquat and paraquat + diquat has been found in feathertop Rhodes grass (Chloris virgata) and tall fleabane (Conyza sumatrensis), respectively

• 2,4-D (Group 4) resistance has been found in 5 and 8% of common sowthistle and wild radish populations respectively from the northern cropping region

• Group 22 herbicides are important components of the double knock strategy commonly used for effective control of many northern region weeds. Alternative herbicide options for this use practice are limited

• To manage herbicide resistance, alternative herbicide and non-chemical tactics should be used in combination.

Item Type:Article
Corporate Creators:Department of Agriculture and Fisheries, Queensland
Business groups:Crop and Food Science
Keywords:herbicide resistance, paraquat, 2,4-D, sowthistle, feathertop Rhodes grass, fleabane
Subjects:Science > Invasive Species > Plants > Effect of herbicides
Science > Invasive Species > Plants > Integrated weed control
Agriculture > Agriculture (General) > Methods and systems of culture. Cropping systems
Plant culture > Field crops
Plant pests and diseases > Weeds, parasitic plants etc
Agriculture > By region or country > Australia > Queensland
Live Archive:08 Mar 2024 03:58
Last Modified:08 Mar 2024 04:01

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