2011 survey status- november 2011
TRANSCRIPT
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S POWLES INFO
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Ryegrass Surveys up to 2005-2009
2008
2007
2005/ 2010
2006
2009
2009
Have covered all survey areasRepeating on 5 year intervals
Survey area 250,000 km-2
South AustraliaNew South Wales
Victoria
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Random Ryegrass Survey Results by Adelaide Uni and Charles Sturt Uni
NSW & Tasmanian results courtesy of John Broster (Charles Sturt Uni, Wagga Wagga)
25 7340 33 32 52010
P. Boutsalis, C. Preston & G. GillData is percentage of samples with survival ≥20% survival in university pot trials .
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HERBICIDE Vic- Mallee(2010)
Vic- North(2006)
SA- Mallee/SE
(2007)
SAEyre Pen
SA- Mid north(2008)
Nr of samples 60 11 57 71 51
Verdict or Targa
7 0 0 0 2
Select 5 0 0 0 0
Atlantis 0 0 0 0 2
Midas - - 0 0 -
Metribuzin - - 0 0 -
Brome
% of paddocks with herbicide resistant brome (≥ 20% survival)(data is % of random samples)
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HERBICIDE VictoriaWestern(2005)
VictoriaNorthern
(2006)
SAMid-North
(2008)
SAEyre-Penin
(2009)
WA(AG zone)
(2005)
Fields with wild oats 35/ 112 96/ 118 95/270 64/177 150/ 678
Hoegrass 17 8 ≥9 ≥2 16
Topik/Wildcat - - 9 2 -
Verdict - - 4 2 -
Axial/ Achieve - 2 6 2 2
Mataven - - 14 0 -
Atlantis - - 0 0 -
WA data from Owen & Powles, 2007SA Mallee 2007 survey: only 4 wild oat samples collected
Wild Oats