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An innovation hub for the woolgrowers of Australia

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28.05.2020 Source: AWEX
AWEX EMI 1170 +15
Micron 17 1620 +19
Micron 18 1495 +28
Micron 19 1373 +19
Micron 20 1305 +9
Micron 21 1299 +15
Micron 26 801 -45
Micron 28 596 +20
Micron 30 459n +9
Micron 32 315n +45
MCar 872 +16


Your right time to spray

AWI funded CSIRO's development of Timerite® to predict the best date for spraying in spring to control redlegged earth mites (RLEM) the following autumn on any particular property.

RLEM is an introduced pasture and crop pest in southern Australia. RLEM are estimated to infest 20 million hectares of pasture, causing $200 million damage to the wool industry alone.

The first step to managing RLEM is to check if pastures are infested. Once RLEM are identified, it is important to understand the risk level for RLEM damage next autumn before spraying.

If RLEM are present in spring, spraying on that paddock's Timerite® date is the safest way to minimise the damage to pastures next autumn.

When should I use the Timerite® spring spray?

It is very effective in controlling mites to prevent damaging populations emerging at the break of season the following autumn.  Only spray if you need to. Overuse of spraying can lead to insecticide resistance.  

Spray if:

  • You can see RLEM on plants or evidence of feeding damage in spring
  • You are planning to reseed a clover pasture; or plant a mite susceptible crop next year such as canola

Other current factors that may increase the current risk of RLEM damage next spring:

  • Tall pasture (shut up for seed, for hay or undergrazed)
  • Abundance of broad leaved weeds (like capeweed)
  • Susceptible pasture or crop plants will be present next autumn
  • If there is good soil moisture at the time of the Timerite spray; which will probably mean an extended spring growing season and more oversummering mite eggs.

How to use the Timerite® spring spray?

To use the Timerite® calculator on the next page, you will need the exact location of the paddock you are to spray in latitude and longitude (in degrees and minutes). You could use a Differential Global Positioning System (DGPS) to find out this exact latitude and longitude or you could use websites like

You can also obtain the spray date for your property from the AWI Helpline on 1800 070 099. You will need a named place on or very close (less than 10km) to where your property is that can be looked up on a map. Alternatively you can provide the AWI Helpline with the exact latitude and longitude.

Please note, this tool does not accept negative values, please remove '-' from all figures.