SciELO - Scientific Electronic Library Online

 
vol.53 issue4O Comportamento do Preço da Terra Agrícola: um modelo de painel de dados espaciaisQualidade Instrumental e Sensorial de Papaia Produzida em Cabo Verde, e Análise Crítica da Sua Importação author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

Share


Revista de Economia e Sociologia Rural

Print version ISSN 0103-2003On-line version ISSN 1806-9479

Abstract

FERREIRA, Marcelo Dias Paes; DANIEL, Lindomar Pegorini  and  LIMA, João Eustáquio de. O Programa Brasileiro de Biodiesel e o Risco Associado ao Preço da Mamona em Irecê, Bahia. Rev. Econ. Sociol. Rural [online]. 2015, vol.53, n.4, pp.667-682. ISSN 1806-9479.  https://doi.org/10.1590/1234-56781806-9479005304006.

This study aimed to assess the structural instability of castor bean price in Bahia state, Brazil, and to verify if The Brazilian National Program for Production and Use of Biodiesel (PNPB) has increased castor bean price instability. We modeled price instability by TGARCH and EGARCH conditional heteroscedasticity approaches. Results point out that castor bean prices in Bahia are structurally volatile, a price increase leads to a higher instability, and PNPB raised castor bean price volatility in Bahia. As farmers are risk averse, the PNPB became castor bean cultivation less attractive, which may have contributed to the null use of castor bean as a raw material within the program.

Keywords : Farm-gate price; PNPB; TGARCH; EGARCH.

        · abstract in Portuguese     · text in Portuguese     · Portuguese ( pdf )