Benefits of genetically modified herbicide tolerant canola in Western Canada

摘要

Commercial production of genetically modified herbicide tolerant (GMHT) canola began in Western Canada in 1997. By 2007, it generated between $374 million and $422 million in net direct and indirect benefits for producers, partly attributed to lower input costs and better weed control. Prior to GMHT canola, weeds were controlled by herbicides and tillage. Much of the tillage associated with GMHT canola production has been eliminated now that 66% of producers use conservation tillage. A reduction in the total number of chemical applications has resulted in a decrease of 1.3 million kg of herbicide active ingredient being applied annually. When comparing canola production in 1995 and 2006, the environmental impact of herbicides applied to canola decreased 53% per hectare and producer exposure to chemicals decreased 56%.