Market impacts of technological change in Canadian agriculture are measured within a CGE framework using 2001 input-output data with agriculture disaggregated to six sectors and thirteen commodities. Technological change is modelled as productivity rises in the use of intermediate inputs and of primary factors. Impacts on output, intermediate use of output, foreign trade, final consumption, returns to primary factors and relative price are calculated for primary and processed food products. Impacts of technological change can be summarised into two general outcomes. First, supply managed sectors respond to technological change differently than other agricultural sectors. In the former, economic rents generated from quotas increase while in the latter, outputs, exports, and final consumption increase along with declines of relative supply prices. Second, large relative price declines for other commodities lead to consumer gains.