Revista de Economia e Sociologia Rural
https://revistasober.org/article/5d06e2d30e8825fa30f70b6c
Revista de Economia e Sociologia Rural
Artigo original

A ESPECIFICAÇÃO DE MODELOS PARA ANÁLISE ECONÔMICA DO USO DE FERTILIZANTES: UM CASO ENCERRADO?!

Edgar Augusto Lanzer; Quirino Paris.

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Resumo

O objetivo deste trabalho é contrastar o ponto de vista dos agrônomos com o dos economistas rurais quanto à especificação de modelos de análise para o estudo das relações entre o rendimento dos cereais e a aplicação de fertilizantes. Os pontos de discórdia expostos pela discussão abrangem: (a) rendimento máximo em forma de ponto único vs. rendimento máximo em forma de teto; (b) isoquantas neoclássicas vs. impossibilidade de substituição entre nutrientes; e (c) generalização via incorporação de variáveis locacionais vs. generalização via conceito de produtividade relativa. As diferenças de opinião conduzem a modelos de análise alternativos, e, possivelmente, podem explicar a existência de dificuldades práticas na promoção de pesquisas integradas.

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