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green peach aphid

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Catalogue: Broadacre Field Crops DAFF QLD
Adults and nymphs form dense colonies which appear bluish-grey and are covered with a fine, whitish powder... Nymphs are greenish and adults are a dull or greyish-green... Adults and nymphs suck on sap and high numbers can result in reduced pod set, pod fill and grain quality...
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Catalogue: Broadacre Field Crops DAFF QLD
Adults and nymphs form dense colonies which appear bluish-grey and are covered with a fine, whitish powder... Nymphs are greenish and adults are a dull or greyish-green... Adults and nymphs suck on sap and high numbers can result in reduced pod set, pod fill and grain quality...
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Catalogue: Broadacre Field Crops DAFF QLD
Adults and nymphs form dense colonies which appear bluish-grey and are covered with a fine, whitish powder... Nymphs are greenish and adults are a dull or greyish-green... Adults and nymphs suck on sap and high numbers can result in reduced pod set, pod fill and grain quality...
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Catalogue: GRDC Media
A new testing service is being offered to grain growers and advisers to determine the presence of insecticide resistance in green peach aphid (GPA) populations... The service is being made available through cesar with the support of the Grains Research and Development Corporation (GRDC) to assist growers in choosing the most effective product for controlling GPA... Anthony van Rooyen, of cesar, says resistance in GPA has escalated as a result of heavy reliance on insecticides...
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Catalogue: GRDC Media
A new testing service is being offered to grain growers and advisers to determine the presence of insecticide resistance in green peach aphid (GPA) populations... The service is being made available through cesar with the support of the Grains Research and Development Corporation (GRDC) to assist growers in choosing the most effective product for controlling GPA... Anthony van Rooyen, of cesar, says resistance in GPA has escalated as a result of heavy reliance on insecticides...
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Catalogue: Ground Cover
Hart Winter Walk: virus explained to growers.. Ms Davidson explained that when growers first started reporting widespread damage in June it was initially put down to incorrect herbicide use, but as more crops started showing yellowing leaves a different picture emerged... Crops such as chickpeas, lentils and field peas had not emerged when the first round of the virus hit, but Ms Davidson told growers that pulses will also be susceptible to BWYV in spring...
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Catalogue: GRDC Updates
Sulfoxaflor is currently being assessed by the APVMA and may be registered in mid 2012 with the trade name Transform@" Insecticide... Data presented shows that sulfoxaflor is effective on oat aphid at rates between 12-24 g ai/ha... The paper presents data from three field trials showing the efficacy of sulfoxaflor on oat aphid in Western Australian cereals from 2008 to 2009...
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Catalogue: Ground Cover
Ms Davidson explained that when growers first started reporting widespread damage in June it was initially put down to incorrect herbicide use, but as more crops started showing yellowing leaves a different picture emerged... "If crops show patchy infection it may be necessary to control the aphids to prevent further spread of the virus into unaffected parts of crops during late winter and spring.".. Crops such as chickpeas, lentils and field peas had not emerged when the first round of the virus hit, but Ms Davidson told growers that pulses will also be susceptible to BWYV in spring...
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Catalogue: GRDC Updates
Sulfoxaflor is currently being assessed by the APVMA and may be registered in mid 2012 with the trade name Transform@" Insecticide... Data presented shows that sulfoxaflor is effective on oat aphid at rates between 12-24 g ai/ha... R. padi numbers were assessed by counting the number of aphids on 10-20 randomly selected tillers depending on the trial...
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Catalogue: Ground Cover
Recent GRDC-funded research has uncovered widespread resistance among green peach aphid populations to pirimicarb, synthetic pyrethroids and organophosphates in Victoria, South Australia, New South Wales, Queensland and Western Australia... Department of Agriculture and Food, WA (DAFWA), PestFax coordinator Peter Mangano says grain growers have experienced significant issues with resistance in green peach aphid this season... Dr Umina says: "If we discover that individual aphids have resistance to organophosphates, synthetic pyrethroids and carbamates, it will mean the likely reproduction of fully resistant offspring, as green peach aphids can reproduce asexually to produce clones of themselves...
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