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aphid damage

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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: Broadacre Field Crops DAFF QLD
Adults showing dark bands around the antennae segments... Photo: D Ironside Adult showing tube-like projections at the rear of the body... In eastern Australia, aphids appear to have declined in pest status since the introduction to Australia of bluegreen aphid (BGA) and spotted alfalfa aphid (SAA) in the 1970s when they caused widespread damage...
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Catalogue: Broadacre Field Crops DAFF QLD
Adults showing dark bands around the antennae segments... Photo: D Ironside Adult showing tube-like projections at the rear of the body... In eastern Australia, aphids appear to have declined in pest status since the introduction to Australia of bluegreen aphid (BGA) and spotted alfalfa aphid (SAA) in the 1970s when they caused widespread damage...
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Catalogue: Broadacre Field Crops DAFF QLD
Adults showing dark bands around the antennae segments... Photo: D Ironside Adult showing tube-like projections at the rear of the body... In eastern Australia, aphids appear to have declined in pest status since the introduction to Australia of bluegreen aphid (BGA) and spotted alfalfa aphid (SAA) in the 1970s when they caused widespread damage...
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Catalogue: GRDC Updates (West)
Mention of a trade name or company in this publication does not imply endorsement of any product or company by Department of Agriculture.. Project No.: ELD2 Paper reviewed by: Tim Scott (Elders Limited) Crop Updates is a partnership between the Department of Agriculture, Western Australia and the Grains Research & Development Corporation -48.. Crop Updates is a partnership between the Department of Agriculture, Western Australia and the Grains Research & Development Corporation -54 "Blackleg"..
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Catalogue: Ground Cover
The ability of canola to compensate for early aphid damage supports the increased use of natural enemies to control aphid outbreaks.. "Canola has an excellent capacity to compensate for crop damage, meaning current spray thresholds of around 10 per cent infestation of racemes (flower clusters) may be more stringent than necessary," says Dr Paul Grundy, senior research scientist at the Queensland Department of Agriculture and Fisheries... While the physical damage inflicted during these experiments is different to an actual aphid infestation, the results suggest that canola has an excellent capacity to compensate for crop damage...
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Catalogue: Ground Cover
The ability of canola to compensate for early aphid damage supports the increased use of natural enemies to control aphid outbreaks.. "Canola has an excellent capacity to compensate for crop damage, meaning current spray thresholds of around 10 per cent infestation of racemes (flower clusters) may be more stringent than necessary," says Dr Paul Grundy, senior research scientist at the Queensland Department of Agriculture and Fisheries... While the physical damage inflicted during these experiments is different to an actual aphid infestation, the results suggest that canola has an excellent capacity to compensate for crop damage...
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Catalogue: GRDC Research Summaries
The only available management options for other major pests, particularly podsucking bugs and podborers, have the potential to derail IPM because they are highly disruptive to beneficial insects... Additional major IPM issues are the ever present resistance threat to the new generation pesticides targeting Helicoverpa armigera, the eventual likely deregistration by the APVMA of dimethoate (the only effective mirid and aphicide in grain crops), and the ongoing need for multi-pest IPM to reduce the risk of silverleaf whitefly (SLW)... Ongoing RD&E is clearly needed to address these issues and to continually improve and maximise the adoption of IPM throughout the GRDC Northern Region...
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