Grains Research and Development

Date: 10.08.2016

Redlegged earth mite RMS – NSW, SA, Tasmania and Victoria

Eastern RLEM

Resistance management strategy for the redlegged earth mite in Australian grains and pastures in New South Wales, South Australia, Tasmania and Victoria

Key points

  • The redlegged earth mite (RLEM) is an important pest of germinating crops and pastures across NSW, SA, Tasmania and Victoria.
  • Four chemical sub-groups are registered to control RLEM in grain crops: organophosphates (Group 1B); synthetic pyrethroids (Group 3A); phenylpyrazoles (Group 2B); and neonicotinoids (Group 4A). The latter two are registered only for use as seed treatments. 
  • Insecticide resistance in RLEM is presently confined to Western Australia. There are high levels of resistance to pyrethroids within WA populations; resistance to organophosphates has also recently evolved. 
  • A strategy to manage insecticide resistance in RLEM populations is available for use by grain growers and their advisers. The strategy varies across regions.

Want to keep up to date? https://grdc.com.au/FS-RLEM-Resistance-strategy-South

Region South