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2011 Autumn - Can agriculture manage a genetically modified future

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FPJ0801 - Beckie et al, GM Canola- the Canadian experience

This article examines the agronomic, economic and environmental impacts of genetically modified (GM) herbicide-resistant (HR) canola (Brassica napus) after 15 years of cultivation in Canada. The rapid adoption of GM canola is due to improved weed control, greater yields and higher economic returns. GM canola has reduced the environmental impact of herbicides compared with their non-HR crop counterparts. There are no marked changes in volunteer weed problems associated with GM canola, except in no-till systems when glyphosate was used alone to control volunteers. GM canola has not reduced weed species diversity. Moreover, GM canola has provided new in-crop herbicide modes of action and has been an important management tool for slowing weed resistance to high-risk herbicides. Reliance on GM crops in rotations using the same mode-of-action herbicide and/or multiple in-crop herbicide applications over time can result in intense selection pressure for weed resistance. With current favourable economic returns from growing canola, many farmers are shortening their GM canola rotations. To date, evolved glyphosate- or glufosinate-resistant weeds in GM canola in Canada has not yet occurred.

 

Beckie H J, Harker K N , Légère A, Morrison M J, Séguin-Swartz G, Falk K C -
GM Canola: the Canadian experience
Farm Policy Journal Autumn 2011, Volume 8, Number 1, pp. 43-49


Biotechnology, GM, GMO, Genetically modified agriculture, Australia.

$12.10


 
 




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