Start Date

1-12-2015 12:00 AM

Description

According to the International Survey of Herbicide Resistant Weeds (http://www.weedscience.org) there are currently 461 unique cases of herbicide-resistant (HR) weeds. The United States leads the way in number of HR weeds, with twice as many as any other country (Table 1). The prevalence of herbicide resistance is determined primarily by the acres under cultivation and type of production systems utilized, rather than how well individual farmers manage weeds. The USA leads the world in HR weeds because we have expansive acreage devoted to production systems heavily reliant on herbicides, not because our farmers are less adept at managing herbicide resistance than their foreign counterparts.

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Dec 1st, 12:00 AM

Herbicide resistance mechanisms: Why doesn’t that weed die?

According to the International Survey of Herbicide Resistant Weeds (http://www.weedscience.org) there are currently 461 unique cases of herbicide-resistant (HR) weeds. The United States leads the way in number of HR weeds, with twice as many as any other country (Table 1). The prevalence of herbicide resistance is determined primarily by the acres under cultivation and type of production systems utilized, rather than how well individual farmers manage weeds. The USA leads the world in HR weeds because we have expansive acreage devoted to production systems heavily reliant on herbicides, not because our farmers are less adept at managing herbicide resistance than their foreign counterparts.