Balloon effects in coca crops in the Andean region (1990-2009)

Main Article Content


Leonardo Raffo López
Javier Andrés Castro
Alexander Díaz España


The aim of this article is to contrast empirically the presence of balloon
effects affecting coca crops in the geographic territory corresponding to
the main producer countries (Colombia, Perú and Bolivia) of the Andean
region during the period 1990-2009. The empirical methodology has been
focused in the specification and estimation of a simultaneous equation system
using a SUR model. The model attempts to explain the behaviour of
the number of hectares cultivated with coca plants as a function of different
variables. We conclude that there is empirical evidence supporting the presence
of balloon effects in the Andean region during the period of inquiry.


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