Western Australia
April 4, 2007
Herbicide resistance has reared
its 'ugly head' again, but this time in the spiky weed,
doublegee.
GRDC supported research has
confirmed one case of metsulfuron-methyl resistance in doublegee
within the northern agricultural region of Western Australia.
Department of Agriculture
and Food senior research officer, Dr Abul Hashem said the
population was five times more resistant to metsulfuron-methyl
than other susceptible doublegee populations.
"Similar resistance may be present in many other doublegee
populations that are yet to be identified and characterised in
Western Australia.
"However, this metsulfuron-methyl resistant population is
susceptible to all group C herbicides, such as atrazine,
bromoxynil, cyanazine, diuron, metribuzin and simazine.
"More research is needed to confirm the resistance of this
population to other group B herbicides, such as triasulfuron and
imazethapyr," Dr Hashem said. |
|