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Weeds in fields with contrasting conventional and genetically modified herbicide-tolerant crops. I. Effects on abundance and diversity (Oct 2003)

We compared the seedbanks, seed rains, plant densities and biomasses of weeds under two contrasting systems of management in beet, maize and spring oilseed rape. Weed seedbank and plant density were measured at the same locations in two subsequent seasons. About 60 fields were sown with each crop. Each field was split, one half being sown with a conventional variety managed according to the farmer’s normal practice, the other half being sown with a genetically modified herbicide-tolerant (GMHT) ...

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bch-vlr-scbd-44949-3
Article, Magazine, Journal, Newspaper
08 May 2012

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Weeds in fields with contrasting conventional and genetically modified herbicide-tolerant crops. II. Effects on individual species (Oct 2003)

We compared the effects of the management of genetically modified herbicide-tolerant (GMHT) and conventional beet, maize and spring oilseed rape on 12 weed species. We sampled the seedbank before and after cropping. During the season we counted plants and measured seed rain and biomass. Ratios of densities were used to calculate emergence, survival, reproduction and seedbank change. Treatments significantly affected the biomass of six species in beet, eight in maize and five in spring oilseed ra ...

Biosafety Virtual Library Resources
bch-vlr-scbd-44948-2
Article, Magazine, Journal, Newspaper
25 Apr 2008

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