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chris preston

Catalogue: GRDC Media
Large infestation of feathertop Rhodes grass in southern Western Australia where it is spreading with summer rains.. "We have now confirmed that two populations from cropping land in New South Wales and Queensland and two from roadsides in South Australia are not controlled with glyphosate at the seedling stage and are classified as resistant," said Dr Chris Preston, chair of the Australian Glyphosate Sustainability Working Group (AGSWG)... Whilst the weed is not listed on any glyphosate herbicide labels, glyphosate has been widely used in Queensland and northern NSW to control seedlings...
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Catalogue: GRDC Media
Large infestation of feathertop Rhodes grass in southern Western Australia where it is spreading with summer rains.. "We have now confirmed that two populations from cropping land in New South Wales and Queensland and two from roadsides in South Australia are not controlled with glyphosate at the seedling stage and are classified as resistant," said Dr Chris Preston, chair of the Australian Glyphosate Sustainability Working Group (AGSWG)... Whilst the weed is not listed on any glyphosate herbicide labels, glyphosate has been widely used in Queensland and northern NSW to control seedlings...
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Catalogue: GRDC YouTube channel
" GRDC Grains Research Updates 22-23 February 2012, Southern Region, Adelaide SA. Chris Preston 17 September 2013 Chris Preston, University of Adelaide, talks about herbicide resistance with particular emphasis on pre-emergent chemistry and glyphosate... New pre-emergent herbicides from Groups J and K are becoming available, but need to be rotated to delay resistance... Brome grass with resistance to glyphosate has been identified in South Australia...
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