title: Global impact of biotech crops: environmental effects 1996-2009.
abstract: This paper updates the assessment of the impact commercialised agricultural biotechnology is having on global agriculture from an environmental perspective. It focuses on the impact of changes in pesticide use and greenhouse gas emissions arising from the use of biotech crops. The technology has reduced pesticide spraying by 393 million kg (-8.7%) and, as a result, decreased the environmental impact associated with herbicide and insecticide use on these crops (as measured by the indicator the Environmental Impact Quotient (EIQ)) by 17.1 %. The technology has also significantly reduced the release of greenhouse gas emissions from this cropping area, which, in 2009, was equivalent to removing 7.8 million cars from the roads.
authors.affiliation: PG Economics, Dorchester, UK. graham.brookes@btinternet.com
authors.forename: Graham
authors.initials: G
authors.lastname: Brookes
authors.forename: Peter
authors.initials: P
authors.lastname: Barfoot
mesh_terms: D018556:Crops, Agricultural; D004784:Environmental Monitoring / Q000379:methods*; D006540:Herbicides / Q000633:toxicity; D007306:Insecticides / Q000633:toxicity; D030821:Plants, Genetically Modified
chemical_list: D006540:Herbicides; D007306:Insecticides