You are here

aphids

Categorised under:

Catalogue: GRDC Media
Cabbage aphids living on the edge.. "Field trials at York and New Norcia in 2013 showed that cabbage aphids - which can cause feeding damage to canola crops in late winter and spring - tend to be distributed along crop edges," Mr Severtson said... Mr Severtson said that as well as highlighting the importance of weed control, the results implied that a border spray might be just as effective at controlling cabbage aphids as a full paddock spray, saving growers time and money...
Related categories:
Catalogue: GRDC Media
The arrival of the previously undetected Russian Wheat Aphid (RWA) in the southern cropping region has heightened the need for correct identification of aphid species present in this year's crops... The publication now includes information on RWA which was detected in Australia for the first time in May this year and is now established in a number of cropping regions in South Australia and Victoria... Identification of crop aphids is very important when making control decisions and the Back Pocket Guide is designed to assist growers and agronomists in their efforts to correctly identify species observed in crops, this year and beyond...
Related categories:
Catalogue: GRDC Media
Dr Mehmet Cakir, Senior Research Fellow at Murdoch University, WA, will conduct and co-ordinate research evaluating Russian wheat aphid resistance in wheat and barley, thanks to a five year GRDC grant... Russian wheat aphid can destroy up to 70 per cent of a wheat crop and more than that in barley... The project will evaluate resistance, develop resistant wheat and barley varieties to biotypes of Russian wheat aphid and finally identify molecular markers for resistance so that continuous breeding for Russian wheat aphid is possible in Australia," Dr Cakir said. "..
Related categories:
Catalogue: GRDC Media
Cabbage aphids prefer to colonise the underside of lower leaves on canola plants, rather than the racemes (flowering spikes)... Growers and advisors are encouraged to report incidences of crop pests and diseases, including cabbage aphids, via email to DAFWA's PestFax service at: pestfax@agric.wa.gov.au.. Caption: Researcher Dusty Severtson, of UWA and DAFWA, in a New Norcia paddock that was one of the 2013 sites for field trials researching the distribution of cabbage aphids...
Related categories:
Catalogue: GRDC Media
A near-perfect start with good summer and autumn rain coupled with mild temperatures saw crops jump out of the ground... Insect pests including green peach aphid (GPA) and the resulting beet western yellows virus (BWYV or synonym, turnip yellows virus) and diamondback moth (DBM) both proved headaches for growers at different stages of the growing season... Mr Baker says the colonisation of DBM in canola crops this year looks to be at a lower level for much the same reason as the risk of GPA and BWYV is this year - a much drier summer and early autumn than last year and less of a green bridge on which to survive...
Related categories:
Catalogue: GRDC Media
A near-perfect start with good summer and autumn rain coupled with mild temperatures saw crops jump out of the ground... Insect pests including green peach aphid (GPA) and the resulting beet western yellows virus (BWYV or synonym, turnip yellows virus) and diamondback moth (DBM) both proved headaches for growers at different stages of the growing season... Mr Baker says the colonisation of DBM in canola crops this year looks to be at a lower level for much the same reason as the risk of GPA and BWYV is this year - a much drier summer and early autumn than last year and less of a green bridge on which to survive...
Related categories:
Catalogue: GRDC Factsheets
Green peach aphid has developed resistance to more insecticides than any other insect species... neonicotinoids are also quite commonly applied to a variety of Australian vegetable crops and are becoming widespread in grains crops as a seed dressing... The most recent survey funded through the gRdC, conducted in 2013, has found widespread and high levels of resistance to carbamates (pirimicarb) and synthetic pyrethroids (alpha-cypemethrin) across Australia...
Related categories:
Catalogue: GRDC Factsheets
Green peach aphid has developed resistance to more insecticides than any other insect species... neonicotinoids are also quite commonly applied to a variety of Australian vegetable crops and are becoming widespread in grains crops as a seed dressing... The most recent survey funded through the gRdC, conducted in 2013, has found widespread and high levels of resistance to carbamates (pirimicarb) and synthetic pyrethroids (alpha-cypemethrin) across Australia...
Related categories:
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...
Related categories:

Pages