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Abstract
This paper analyzes the substitution relations between the
main inputs used in soybean production in Brazil, through the esti-mates of Allen and Morishima substitution elasticities. The theoretical
approach used is the production/cost duality. The data was obtained
from field research in the five main production states in the country.
Chemicals, capital, land, labor and other costs were the variables under
study. The estimated cross-price elasticities pointed to complementa-ry relations between labor and capital. The Allen partial substitution
elasticities showed substitution between most of the production factors,
but a strong complementarity relation was found between capital and
labor. In the Morishima elasticity of substitution concept capital and la-bor were found to be complements when the price of capital varies and
substitutes when the price of labor varies.