Country	Area of trait (‘000 ha)	Yield assumption % change	Base yield (tonnes/ha)	Farm level price ($/tonne)	Cost of technology ($/ha)	Impact on costs, net of cost of technology ($/ha)	Change in farm income ($/ha)	Change in farm income at national level (‘000 $)	Production impact (‘000 tonnes)
US glyphosate tolerant	397	+4.28	1.98	348	+17.3	−7.78	+37.29	+14,810	+42
US glufosinate tolerant	381	+5.9	1.98	348	+17.3	+12.88	+27.81	+10,611	+30
Canada glyphosate tolerant	3,511	+4.28	2.09	383	+28.55	−3.06	+28.82	+101,208	+213
Canada glufosinate tolerant	5,262	+5.9	2.09	383	Nil	−13.47	+89.62	+471,581	+1,045
Australia glyphosate tolerant	499	+8	1.14	407	+9.72	+0.98	+27.14	+13,538	+45

Baseline (conventional) comparison in Canada with herbicide tolerant (non-GM) ‘Clearfield’ varieties.