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Redlegged earth mites have been reported in areas predicted to be too warm for egg-hatch
Where have they been reported?
Reports have confirmed model-based predictions of redlegged earth mite (RLEM, Halotydeus destructor) hatching in the Victorian South West from PestFacts issue No. 1, with sightings in Skipton, Hexam and Hamilton.
However, there have also been reports of RLEM activity in regions that model-based predictions found to be marginally too warm for egg-hatch. In the NSW Riverina, RLEM nymphs have hatched despite the warm conditions (and lack of frosts). In the same district, RLEM have been reported in high numbers in an oat paddock in Walbundrie. Further south in Victoria’s Northern Country and North East, RLEM have been sighted in brassica weeds in Dookie and Goorambat, and in pastures between Albury and Rutherglen.
For more detailed information about this pest, and for further advice on preventative strategies, go to redlegged earth mite within the PestNote series.
Sources of field reports of redlegged earth mites
Josh Douglas – Researcher, the University of Melbourne (Melbourne)
Warwick Nightingale – Agronomist, Delta Ag (NSW Riverina)
Jim Zwar – Agronomist, Greenleaf Crop and Pasture (Victorian South West)
Twitter sources:
Anneika Paridaen (@AParidaen)
What is PestFacts?
PestFacts south-eastern keeps growers and advisers informed about invertebrate pests and beneficials in broadacre crops and pastures during the winter-cropping season in Victoria and southern New South Wales.
PestFacts south-eastern is run through IPMforGrains: Best Practice Insect Pest Management, a project delivered by the National Pest Information Network (cesar, DPIRD, QDAF, NSW DPI, and SARDI). This project aims to provide grain growers and advisors with information on invertebrate grain pest occurrence and equip industry with the knowledge needed to implement integrated pest management practices. This initiative is a GRDC investment and includes in-kind contributions from all project partner organisations.
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PestFacts is produced on an ʻas-needsʼ basis and relies upon pest observations and field reports from our subscribers. If you have recently observed invertebrate pests (or beneficial species) in broadacre crops, please contact us to report your observations.
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