Pricing Contacts and Price Leadership in the Market For Imported Rice In Southwest Nigeria
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Notice bibliographique
Résumé
As Nigeria relies on importation for 56% of its national annual rice consumption, rice availability and prices are major welfare determinants in resource-poor households. Consequently, rice market integration, which will occasion price stability and pricing efficiency, are vitally important. This study examined pricing contacts in the imported rice market (IRM) in Southwest, Nigeria, using time-series data which were first subjected to stationarity tests. The major analytical tools used were growth rate model, coefficient of variation (CV) and Johansen co-integration model. Average growth in price was highest in Osun Market (33.4%), followed by Oyo Market (31.3%) and Ondo Market (29.8%). The highest average growth rate was recorded in year 2008 while negative growth rate was obtained across all IRM locations in the year 2010. This could be linked to lifting of the ban on rice imports that engendered increased importation immediately afterwards. Retail prices were more volatile in Oyo Market (35.8%) and least volatile in Ogun Market (31.1%). The generally low price variability implied that consumers can effectively plan rice expenditure. The ADF and PP tests revealed that all prices were not stationary at their levels but they attained stationarity after first-differencing. Pair-wise market integration tests revealed 14 out of 15 market pairs had prices which were spatially integrated on the long-run. Johansen’s multiple co-integration model results indicated 4 co-integration vectors out of 6 meaning that prices were stationary in 4 directions and non-stationary in 2. The Granger causality model showed that IRM locations deficient in imported rice were driving the prices in market locations with surplus of the commodity. It was recommended that the problem posed by highly inefficient and fragmented distribution and transportation systems be addressed for the rice traders and consumers to take full advantage of the high spatial market integration in the region.
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Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,002 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découle