Australia
April 9, 2008
With
GRDC support,
National Variety Trials
(NVT) implemented a standardised approach to disease resistance
ratings to provide uniformity across Australia.
NVT CEO, Alan Bedggood said the new alpha system (VS-R) replaces
the numerical system (1-9) with the intent of avoiding
confusion.
"Breeders and marketers will show the alpha rating in their
variety brochures and state agriculture departments will use
them in sowing guides," Mr Bedggood said.
Varieties previously rated as resistant had values of 7, 8 or 9
depending on the state where the information was sourced.
Now resistant varieties are rated "R", susceptible varieties "S"
and the modifiers "V" for very and "M" for moderately will also
be applied.
Further information on disease ratings, including grower
management decisions, is available from
www.nvtonline.com.au
Click on National Disease Ratings Guide in the right panel.
|
|
