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Dubious distinction for West Australia -- Skeleton scourge too wide

(Friday, Sept. 13, 2002 -- CropChoice news) --

The West Australian, 09/12/2002, via AgNet: West Australia is, according to this story, building on its reputation as a world leader in herbicide resistance.

The story says that the State now has the dubious distinction of having produced Australia's first proved case of glyphosate resistant annual ryegrass with multiple resistance to other common herbicides.

Tests by the WA Herbicide Resistance Initiative (WAHRI) last year confirmed WA's first proved case of glyphosate resistance in annual ryegrass. Further tests by fourth-year University of WA agriculture student, Jemma Sadler, have now proved the population is multi-resistant to other common annual ryegrass herbicides.

The annual ryegrass, from a farm at Pindar, survived a high rate of Group B herbicides, and then some plants survived a subsequent application of glyphosate, also known by the trade name Roundup.

Individual plants were also resistant to Group A herbicides.

Agriculture Minister Kim Chance was cited as saying this week that WA's approach to the skeleton weed scourge will change from eradication, to a combination of eradication and control,.

The skeleton weed eradication program will be replaced by a new skeleton weed committee providing an opportunity for input from grain growers.