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Beyond the Bale : June 2016
34 ON FARM Now is the time of year for farmers to find out the optimal date in spring for controlling redlegged earth mites (RLEM) in their pastures. RLEM is a major pest of pasture legumes in the winter rainfall regions of southern Australia. They are small mites (1 mm long) with black bodies and red legs that spend most of their time on the soil surface, moving up onto plants to feed. Mite feeding can result in production losses through all stages of annual legume growth in pastures and crops. Mites are often abundant in pastures and it has been calculated that 12,000 mites/m2 use as much energy as one dry sheep equivalent per hectare (one DSE/ha). Mite densities well in excess of 12,000/m2 are frequently recorded in pastures and can lead to a high level of competition with sheep for the pasture resource. TIMERITE ® provides farmers with the date for a single spring spray that controls RLEM through to the following autumn. This date is unique to each farm and will remain constant from year to year. TIMERITE ® works by taking advantage of a time in the RLEM lifecycle when there are the largest proportion of active RLEM present and the lowest proportion of eggs. This is the ideal time to spray, because active RLEM are susceptible to sprays whereas eggs are not. RLEM are found throughout areas of southern Western Australia, South Australia, Victoria, New South Wales and Tasmania with winter dominant rainfall and a dry summer. The TIMERITE ® package covers all areas affected by RLEM. OBTAINING YOUR OPTIMAL SPRAY DATE You can obtain your optimal spray date by using the tool on the TIMERITE® website www.timerite.com.au. 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 www.itouchmap.com/latlong.html 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. WHEN TO SPRAY Spray as close as possible to the optimal spray date. If it is not possible to spray within a couple of days of the date, use a systemic, residual chemical applied within a two-week period leading up to and including the optimal TIMERITE® spray date. Spraying after the optimal date does not achieve good control the following autumn. You do not need to have very high mite numbers to consider spraying but if you cannot see any mites in your pasture it is probably not worth spraying. TIMERITE® does not effectively control other pasture pests the following autumn. Note: Resistance to synthetic pyrethroids and organophosphates has appeared in some populations of RLEM, particularly in WA. Woolgrowers are urged to adopt integrated pest management strategies to reduce dependence on chemicals, and to avoid repeatedly using insecticides from the same group to reduce the spread of resistance. Other strategies include planting varieties of subclover expressing seedling resistance to RLEM, contol of broad leaved weeds and grazing management. MORE INFORMATION www.timerite.com.au AWI Helpline 1800 070 099 RLEM and feeding damage. Areas affected by RLEM. Comparison of unsprayed and sprayed sites on a property at Cranbrook, WA TIMERITE® TIME IS RIGHT FOR FAST FACTS • The TIMERITE® package provides a reliable and effective option for control of redlegged earth mites (RLEM) in Australian pastures. • The RLEM is a major pest of pasture legumes in the winter rainfall regions of southern Australia. • You can obtain your optimal spray date by using the tool on the TIMERITE® website www.timerite.com.au or by phoning the AWI Helpline on 1800 070 099. Unsprayed Sprayed
In the Shops - September 2016