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canola paddock

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...
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Catalogue: GRDC Media
"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... Caption 2 : Researcher Dusty Severtson, of UWA and DAFWA, in a New Norcia paddock - one of the sites for field trials researching the distribution of cabbage aphids... 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...
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Catalogue: Ground Cover
The extent of beet western yellows virus (BWYV), which has decimated canola crops in parts of South Australia, Victoria and New South Wales, has been mapped after extensive testing of samples provided by growers... A high incidence of BWYV associated with severe crop damage was confirmed earlier this season in canola crops in parts of SA and Victoria and unusually high infections were also found in several canola paddocks in NSW... Check for the build-up of numbers and any significant numbers of winged aphids in a population, which signals that flights may be about to occur," says Dr Umina, who is leading GRDC-funded research into insecticide resistance in GPA...
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Catalogue: Ground Cover
The extent of beet western yellows virus (BWYV), which has decimated canola crops in parts of South Australia, Victoria and New South Wales, has been mapped after extensive testing of samples provided by growers... A high incidence of BWYV associated with severe crop damage was confirmed earlier this season in canola crops in parts of SA and Victoria and unusually high infections were also found in several canola paddocks in NSW... Check for the build-up of numbers and any significant numbers of winged aphids in a population, which signals that flights may be about to occur," says Dr Umina, who is leading GRDC-funded research into insecticide resistance in GPA...
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Catalogue: GRDC Final Reports
Mean ( s.e.) number of green peach aphids collected at various distances into a canola paddock nine weeks after aphids were released at the paddock edge... Four treatments represented all combinations of aphids released and an 18m buffer treatment of imidacloprid applied as a seed dressing (indicated by the shaded area on the graph)... Mean ( s.e.) percent beet western yellows virus infection of plants collected at various distances into a canola paddock nine weeks after virus-infective aphids were released at the paddock edge...
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