Interdependência dos preços de feijão-vulgar, entre cinco dos principais mercados em Moçambique

• Ano de defesa: 2011
• Autor(a) principal: Chaves, Estevão Silvestre Cambinja
• Orientador(a): Teixeira, Erly Cardoso
• Banca de defesa: Arêdes, Alan Figueiredo de
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Viçosa
• Programa de Pós-Graduação: Mestrado em Economia Aplicada
• Departamento: Economia e Gerenciamento do Agronegócio; Economia das Relações Internacionais; Economia dos Recursos
• País: BR
• Palavras-chave em Português: Preço; Feijão-vulgar; Moçambique
• Palavras-chave em Inglês: Price; Common bean; Mozambique
• Área do conhecimento CNPq: CNPQ::CIENCIAS SOCIAIS APLICADAS::ECONOMIA::ECONOMIAS AGRARIA E DOS RECURSOS NATURAIS::ECONOMIA AGRARIA
• Link de acesso: http://locus.ufv.br/handle/123456789/53

Poor road conditions, distance and informal commerce affect market integration in Mozambique. Disorganized commercial chain of common bean and inappropriate marketing infrastructure generate price differential among regional markets far beyond the cost of transport. In the last decade, Mozambique markets have witness a growth in the production and sell of common bean. Besides been a highly consumed leguminous in this part of Africa, it is a product that generates rent, specially for rural families. The north and central regions of the country are production regions that keep a regular flux of common beans to the south, the biggest consumers. Despite this connection between north and south, the country has no information regarding the interdependence between the price and these markets, although this analysis is of highest importance for the economic development of the nation of Mozambique, considering that it contains useful information and knowledge for decision making and to form opinions in different areas of production and marketing of the common bean, that has been growing greatly in the past ten years. Market integration would facilitate the agents involved in the chain, from the producer to the consumer, to take rational decision making, thus contributing for improving market efficiency. All those benefits would contribute to the improvement of the wellbeing of producers and consumers. Given the relevance of the theme and the fact that there is not a single study of this nature concerning common bean in Mozambique, the present work aims at analyzing the integration of prices between retail markets and the sense of transmission between the five capital of province, Tete, Maputo, Nampula, Maxixe and Lichinga, in the period between January 2005 and January 2011. For that, weekly data were used, that in turn were transformed in logarithms for better adjustment into the model. To fulfil this aim, the methodology used was autoregressive model (VAR). that allowed the analysis of the market integration and the transmission of prices with the impulse-response function, the decomposition of the variance of the errors of prevision and casualty test. The results of the impulse-response and the decomposition of errors of prevision indicate that the market in Tete helds the biggest power of explanation about the prices of the common bean in the markets in Nampula, Maputo, Maxixe and Lichinga, leading significantly the price variations of the common bean in a short term. The same did not happen with the other markets. Nampula presented power of explanation only over the prices of common bean in the Lichinga market. Through the casualty test in Granger, there is a unidirectional casual connection of the price of common bean in the markets of Tete to Nampula, Maputo and Maxixe. It was also found a unidirectional casual connection of the price of common bean in the markets of Maputo to Maxixe and Lichinga. That implies to say that the prices in these two regions affect the present price in the other regions in study. It can than be assumed that the hypothesis of the presence of integration between the markets of common bean in analysis can not be rejected. That means that the prices of the markets in analysis are integrated, that is to say, they inter-related along the years. The second hypothesis of that Maputoi has greater importance in the explaination of prices in the other markets has been rejected. Given the importance of the prices of the common bean in the market of Tete in determining prices in the other markets, it is been concluded that Tete market is the price maker, while Nampula, Maputo, Maxixe and Lichinga markets can be considered price takers. It is necessary to point out that the lack of direct intervention by the competent organs in the sector is a determinant factor for the bad development of the chain, from the production to the commercialization of the product. More government intervention in the common bean market favouring research, road access improvement, credit policies and price guarantee, technical assistance and the creation of transport infrastructures, would contribute for the country s development as a whole. The intervention of institutions would help monitoring price shifts, thus facilitating the implementation of stabilization policies and price forecast in the country, providing thus better support to the economic agents in decision making process regarding this sector.