Table 1.
National level changes in herbicide ai use and field EIQ values for GM HT soybeans in Canada 1997–2018.
| Year | ai saving (kg) | EIQ saving (units) | % decrease in ai (- = increase) | % EIQ saving |
|---|---|---|---|---|
| 1997 | 530 | 20,408 | 0.03 | 0.06 |
| 1998 | 25,973 | 1,000,094 | 1.8 | 3.0 |
| 1999 | 106,424 | 4,097,926 | 7.4 | 11.9 |
| 2000 | 112,434 | 4,329,353 | 7.4 | 11.9 |
| 2001 | 169,955 | 6,544,233 | 11.1 | 17.9 |
| 2002 | 230,611 | 8,879,827 | 15.7 | 25.4 |
| 2003 | 276,740 | 10,656,037 | 18.5 | 29.8 |
| 2004 | 351,170 | 13,522,035 | 20.4 | 32.8 |
| 2005 | 373,968 | 14,399,885 | 22.2 | 35.8 |
| 2006 | 84,130 | 10,191,227 | 4.8 | 24.5 |
| 2007 | 75,860 | 9,167,500 | 4.5 | 22.7 |
| 2008 | 96,800 | 11,726,000 | 5.6 | 28.5 |
| 2009 | 103,374 | 12,521,832 | 5.2 | 26.5 |
| 2010 | 113,729 | 13,776,201 | 5.4 | 27.3 |
| 2011 | 97,749 | 11,840,550 | 4.4 | 22.2 |
| 2012 | 119,977 | 14,533,032 | 5.0 | 25.3 |
| 2013 | 133,634 | 16,187,269 | 5.0 | 25.3 |
| 2014 | 149,969 | 18,165,957 | 3.7 | 24.1 |
| 2015 | 204,778 | 24,805,156 | 5.2 | 33.7 |
| 2016 | 517,955 | 19,967,913 | 13.1 | 26.9 |
| 2017 | 649,809 | 25,051,100 | 12.4 | 25.3 |
| 2018 | 569,214 | 21,944,043 | 12.5 | 25.6 |
Sources: Own calculations based on data from George Morris Center3, Weed Control Guide Ontario (updated annually), extension and industry advisors