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New service to screen for insecticide resistance in aphids

02 Jun 2015 | Filed under sustainable agriculture

A new testing service is being offered to growers and advisers to determine the presence of insecticide resistance in green peach aphid (GPA) populations - a pest of various horticultural and grain crops.

Update on green peach aphid insecticide resistance findings and management

19 Mar 2015 | Filed under sustainable agriculture

Both DNA testing and insecticide bioassays conducted by cesar on populations of green peach aphid (GPA) from all over Australia have revealed varying levels of resistance to the following three chemical groups: organophosphates (dimethoate, omethoate and chlorpyrifos), synthetic pyrethroids (bifenthrin and alpha-cypermethrin) and carbamates (pirimicarb).

Reducing aphid and virus risk in 2015

10 Feb 2015 | Filed under sustainable agriculture

Early management decisions are key to reducing aphid and beet western yellows virus (BWYV) risk in 2015. Significant rainfall over much of the southern cropping zone in January 2015 has created a green bridge, which can host large populations of insects as well as viruses between growing seasons.

Insecticide resistance in GPA across southern Australia

07 Oct 2014 | Filed under sustainable agriculture

Widespread infestations of green peach aphids (GPA) (Myzus persicae) during autumn and winter have contributed to an outbreak of beet western yellow virus (BWYV) in southern Australia. Canola crops across the lower and mid north regions of South Australia, western Victoria and some parts of NSW have been severely affected...

MacKenzie River platypuses survive Grampians fire

01 Aug 2014 | Filed under wildlife ecology

The MacKenzie River, originating in the Grampians and flowing west towards Horsham, supports the last known platypus population in the Wimmera Catchment (although occasional sightings have been reported elsewhere; platypusspot.org/latest-comments/id/197). Platypuses have significantly declined throughout the catchment due to a combination of severe drought and human impacts (e.g.