You are here

canola viruses

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 Media
Beet western yellows virus, spread by green peach aphids, has severely damaged canola crops in parts of the southern region.. "The experts agree that growers should give serious consideration as to whether spraying to control GPA while winter conditions persist in the southern cropping region is warranted," Dr Taylor said... Studies funded by the GRDC have found that the extent of insecticide resistance in GPA across Australia has escalated as a result of heavy reliance on insecticides to manage aphid populations, placing strong selection pressure on the insect to develop resistance and leaving growers with limited future control options...
Related categories:
Catalogue: GRDC Media
Crop rotations provide the only option for long-term management of sclerotinia given the extended viability of the pathogen... A new Grains Research and Development Corporation (GRDC) fact sheet - Sclerotinia Stem Rot in Canola - contains information about the disease, including prevention and management measures... Caption: A new GRDC fact sheet - Sclerotinia Stem Rot in Canola - contains information about the disease...
Related categories:
Catalogue: GRDC Media
Beet Western Yellows Virus (BWYV) has caused unprecedented damage to canola crops in south-east Australia this season, causing the GRDC to fund emergency research to analyse the outbreak and limit potential damage in future seasons... For growers who have severely infected crops and will suffer significant losses this year, this means no more measures can be taken to address the outbreak in those crops... Where growers have only patches of infection, or have crops not affected, Dr Davidson recommends close observation of the aphids...
Related categories:
Catalogue: GRDC Media
Canola growers advised of herbicide label change.. Canola growers are advised that labels on haloxyfop products will be amended to help ensure that domestic and international residue limits are complied with... "Haloxyfop labels are being amended to more clearly define when the products can be used in relation to the crop growth stage," he said...
Related categories:
Catalogue: GRDC Media
Canola virus test results help to map extent of infection.. The Victorian Department of Environment and Primary Industries (DEPI) testing laboratory has tested thousands of plants and results to date have provided a clear picture of where infection has occurred... Check for the build-up of numbers and the production of significant numbers of winged aphids in a population, which signals that flights may be about to occur," said Dr Umina, who is leading GRDC-funded research into insecticide resistance in GPA...
Related categories:
Catalogue: Ground Cover
Katherine Hollaway, eXtensionAus Field Crop Diseases project manager, explains to evaluation workshop participants how the resource functioned in response to the beet western yellows virus outbreak... "As the connections [between state stakeholders] were there we had the ability to scale up the information as the situation unfolded," says Katherine Hollaway, eXtensionAUS Field Crop Diseases project manager from the Victorian DEPI... "It could have fallen into the trap of adding to the noise, but eXtensionAUS found a niche in terms of the content it was able to deliver, the timeliness of the delivery and the channels (including Twitter) it used to get information out," he says...
Related categories: