Brendon Cant brendon at iinet.net.au
Thu Oct 26 03:50:49 CEST 2006

BURN AND BURY - New GRDC supported research in WA showed a mix of old and
new techniques can help slow the development of herbicide resistance in
ryegrass, one of the most difficult weed issues growers face.
Albany based Department of Agriculture and Food researcher Dr Sally Peltzer
said growers doubled cereal yields after trialling the new method that
involved catching and disposing of ryegrass seed at harvest.
"Exploiting the fact ryegrass seeds hang on the stems for longer than many
grasses, scientists found more than 75 per cent could be caught at harvest
and added to the harvester chaff, then left in the windrow and disposed of
by burial," Dr Peltzer said.
She told the GRDC supported Australian Weeds Conference in Adelaide that
using a conventional mouldboard plough was the best disposal method, as
seeds buried below 15cm could not emerge.

Contact: Dr Sally Peltzer, Tel 08 9892 8504

LUPIN EVOLUTION - Significant genetic improvements have been made in WA
narrow leafed lupins since the 1970s, but challenges still lay ahead,
according to Department of Agriculture and Food lupin breeder Dr Bevan
He told the recent GRDC supported Australian Agronomy Conference in Perth
that herbicide resistant weeds and competition from increased global soybean
production were major challenges confronting WA's lupin industry.
Dr Buirchell said research on more herbicide tolerant varieties would
continue, as would a focus on thinning lupin hulls, which made up 25 per
cent of the lupin and had to be removed for aquaculture.
The unique dietary fibre and antioxidant components of lupins could also be
"Improvements in grain quality are achievable within limits, but how much
this can benefit the industry depends on how well we interpret market
signals from sectors likely to pay premiums," he said.

Contact: Dr Bevan Buirchell, Tel 08 9368 3653

 Authorised by GRDC and issued on its behalf by Brendon Cant & Associates,
Tel 08  9384 1122 




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