Estimated distribution of cropland area treated with neonicotinoids in the Prairie Pothole Region (PPR) of Canada (2009–2012).

Area and percentage of seed treatment applications are separated into 5 categories defined by application rates. Bolded values are the total area treated and percentage of Prairie croplands1. 1Total PPR cropland in production based on Statistics Canada Field Crop Reporting Series: July 2009, July 2010, July 2011, July 2012: Estimates of Principal Field Crops. 2In both 2010 (Est. 2.9 million ha) and 2011 (Est. 3.1 million ha), wet spring conditions increased the amount of cropland that went unseeded.