Publications des agents du Cirad


Multifunctionality and non-agricultural supply of public goods

Le Cotty T., Voituriez T.. 2003. In : IAAE. Reshaping Agriculture's Contributions to Society : 25th International Conference of Agricultural Economists, Durban, South Africa,16-22 August 2003. s.l. : s.n., 7 p.. International Conference of Agricultural Economists. 25, 2003-08-16/2003-08-22, Durban (Afrique du Sud).

When public goods are joint outputs of agricultural production, there is a trade-off between agricultural and non-agricultural provision of the public good. The principle of minimal price distortion in the reform of agricultural policies has led to a theoretical recommendation that public goods, if under-provided at agricultural free market level, should be promoted through non agricultural policies instead of agricultural policies. We show that the economies of scope between the agricultural production and the joint public good play a key role in determining the optimal way of providing this latter. If the policy designed is a non-agricultural policy, the production cost of the public good is higher than with an agricultural policy. If the policy designed is an agricultural policy, the production cost is lower but generates marginally increasing deadweight losses. Under the assumption of strictly positive economies of scope, we show that the optimal policy is a mix of agricultural and non-agricultural policy. We confirm this result in the two-country case, demonstrating the optimal level of agricultural support for public good provision is strictly positive and lower than in the case of one contry.

Mots-clés : politique agricole; marché des produits de base; intervention de l'état; sécurité alimentaire; politique économique; rémunération; multifonctionnalité

Documents associés

Communication de congrès

Agents Cirad, auteurs de cette publication :