The United Kingdom’s Demonstration Test Catchments (DTC) project is a new initiative of the Department of Environment, Food and Rural Affairs (Defra) to provide a research platform from which a number of integrated ways of managing agricultural diffuse source pollution at the river catchment level can be developed. France also has launched a major research initiative by the Ministries of Agriculture and Environment, conducted through the Institut National de la Recherche Agronomique (INRA), to support the national Ecophyto plan that plans to achieve a 50% reduction in pesticide use by 2018. Nearly three-quarters of the UK land surface is in agricultural production and the influence of farming on water and the ecosystems it supports is significant (Table 5.1).