The threshold vector error correction model is a popular tool for the analysis of spatial price transmission and market integration. In the literature, the profile likelihood estimator is the preferred choice for estimating this model. Yet, in certain settings this estimator performs poorly. In...

This analysis employs cointegration methods and semiparametric regression in order to assess the integration of maize markets and the factors determining national and cross-national transmission of price signals in Sub-Saharan Africa. We use a rich dataset of 16 series of wholesale maize prices...

In den letzten Jahren hat sich die Bioenergieproduktion rasant entwickelt, so dass man mittlerweile von einem "Bioenergieboom" sprechen kann (WBGU 2008: 1). Maßgeblich unterstützt wurde dieser Trend hierzulande durch die starke politische Förderung von Bioenergie sowohl von Seiten der...

Spatial market equilibrium theory views trade flows as the driving force behind market integration. We assess the price linkages between five major tomato markets in Ghana to ascertain whether spatial price transmission depends solely on direct trade between markets, or whether other forces...

The impact of cross-sectional aggregation over individual retail stores on the estimation and testing of vertical price transmission between the wholesale and retail levels is investigated using a unique data set of individual retail prices in Germany. Systematic differences between the results...

In vielen Studien werden die Erkenntnisse der Cointegrationstheorie bei der Bestimmung symmetrischer Preisanpassungen auf räumlich oder vertikal getrennten Märkten umgesetzt. Bei der Identifikation asymmetrischer Preisanpassungsprozesse hingegen wird immer noch der Ansatz von Wolffram aus dem...

[eng] The robustness of asymmetric price transmission tests in the presence of structural breaks - Asymmetric price transmission, especially between vertically separated markets, has been a subject of considerable attention in agricultural economics. Asymmetric price transmission is not only...

Agricultural commercialization has become the centerpiece of the sector development strategy in Uganda in recent years. Nevertheless the low market participation of most smallholders in the country remains a fact. We employ semi-parametric regression techniques to analyze the current state of...

Maize is a major staple food in Sub-Saharan Africa. Monthly maize prices in Tanzania are analyzed since the country is an important maize producer and exporter in East Africa. We analyze price transmission between the five most important urban regions of Tanzania between 2000 and 2008 which...