The concept of sector-specific and economy-wide policies on incentives for agriculture is defined. A methodology is described for measuring the impact of those policies and results are given for a sample of commodities for 18 developing countires for 1975-84. On average, sector-specifiv policies tax agricultural exports and protect agricultural imports. Economywide policies tax agricultural products. The impacts of the economywide policies dominate those of the sector-specific policies both for agricultural exports (where they are negative) and imports (where the impact of the specific policy to agriculture is positive).