Agricultural growth can come about through bringing new resources into production (new land, extension of irrigation, or input intensification per hectare) or through raising the productivity of existing resources. The appropriate measure of productivity growth in this context is Total Factor Productivity (TFP) growth, which is defined as the aggregate quantity of outputs produced by the agricultural sector divided by the aggregate quantity of inputs used to produce those outputs.
This measure contrasts with partial productivity measures such as growth in labour productivity or land productivity (yields per hectare) because an increase in these partial productivity measures can be achieved by increasing the intensity of use of other inputs (for example, crop yields can be increased by applying greater amounts of fertiliser or using more labour).… Read the rest
