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Intertemporal and interfirm heterogeneity : implications for pesticide productivity

Author

Listed:
  • Alain Carpentier

    (SMART-LERECO - Structures et Marché Agricoles, Ressources et Territoires - INRA - Institut National de la Recherche Agronomique - AGROCAMPUS OUEST)

  • Robert D. Weaver

    (independent)

Abstract

Cet article met en évidence l'existence et les implications d'effets d'hétérogénéité pour l'estimation de la productivité marginale des pesticides. Il prolonge les travaux des auteurs concernant les effets fixes qui déplacent de manière homothétique l'espérance conditionnelle de la production. En particulier, il considère les implications de déplacements temporels de l'élasticité de la productivité marginale des intrants, c'est-à-dire des déplacements non homothétiques de la production. L'importance et la structure de l'hétérogénéité du secteur français des grandes cultures sont d'abord présentées afin d'illustrer l'existence d'une hétérogénéité en terme d'économétrie des fonctions de production. En particulier, les auteurs rappellent l'éventuelle existence de biais associés à l'omission de ces types d'hétérogénéité (interindividuelle et intertemporelle) pour l'estimation de la productivité des pesticides. Une méthode d'inférence robuste à ces biais, dérivée des travaux de Chamberlain (1982 et 1984), est présentée et mise en oeuvre. L'existence d'effets individuels et temporels fixes est confirmée statistiquement de même que celle de la variation intertemporelle de l'élasticité de la productivité marginale espérée des intrants.

Suggested Citation

  • Alain Carpentier & Robert D. Weaver, 1996. "Intertemporal and interfirm heterogeneity : implications for pesticide productivity," Post-Print hal-01931606, HAL.
    • Handle: RePEc:hal:journl:hal-01931606
    as

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    Cited by:

    1. Niklas Möhring & Martina Bozzola & Stefan Hirsch & Robert Finger, 2020. "Are pesticides risk decreasing? The relevance of pesticide indicator choice in empirical analysis," Agricultural Economics, International Association of Agricultural Economists, vol. 51(3), pages 429-444, May.
    2. Alfons Oude Lansink & Alain Carpentier, 2001. "Damage Control Productivity: An Input Damage Abatement Approach," Journal of Agricultural Economics, Wiley Blackwell, vol. 52(3), pages 11-22, September.
    3. Carpentier, Alain & Gohin, Alexandre & Sckokai, Paolo & Thomas, Alban, 2015. "Economic modelling of agricultural production: past advances and new challenges," Revue d'Etudes en Agriculture et Environnement, Editions NecPlus, vol. 96(01), pages 131-165, March.
    4. Letort, Elodie & Carpentier, Alain, 2009. "Endogeneity of acreage choices in input allocation equations: implied problems and a solution," 2009 Annual Meeting, July 26-28, 2009, Milwaukee, Wisconsin 49217, Agricultural and Applied Economics Association.
    5. Skevas, Theodoros & Stefanou, Spiro E. & Oude Lansink, Alfons G.J.M., 2010. "Do Farmers Internalise External Impacts of Pesticides in Production?," 120th Seminar, September 2-4, 2010, Chania, Crete 109403, European Association of Agricultural Economists.

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