French (2011) can analytically show that the standard Anderson and van Wincoop (2003) gravity trade model is only correctly specified for disaggregate data; gravity trade model analysis should be done at product level and then estimation results should be reaggregated. If however gravity trade...

With the extension of the standard Melitz Model from Ahn et al. [2011], the important role of intermediaries in facilitating trade is now recognized. In this paper, we are going to expand Chaney's [2008] approach to an Intermediate Melitz Model. By researching if Chaney's results still apply for...

The 2003 reforms of the Common Agricultural policy of the European Union introduced decoupled income transfers as the most prominent policy instrument. However, member states were given substantial discretion over the degree and timing of the reform implementation. As a result, different...

The emergence of 'New New Trade Theory' fundamentally changed the thinking of international trade, and it is now at the heart of science. Here, we are going to take up the discussion of Golpinath et al. [2007], looking at whether 'New New Trade Theory' is applicable to agriculture. Revisiting...

In this paper, we are going to reconsider the standard Viner Model [Viner, 1950] however under the premise of firm heterogeneity. By means of a graphical analysis we show that a consideration of the degree of firm heterogeneity is important for an evaluation of a preferential trade agreement....

Recently, discussion about the appropriate estimation of gravity trade models has started in agriculture. Here, we are going to review recent developments in the literature. It appears that fixed effects Poisson Pseudo Maximum Likelihood is not only the only consistent estimator [Santos Silva...

Supermarkets are gaining ground in the agri-food systems of many developing countries. While recent research has analyzed income effects in the small farm sector, impacts on productivity and efficiency have hardly been studied. We use a meta-frontier approach and combine this with propensity...

The 2003 reforms of the Common Agricultural Policy of the Euro-pean Union allowed for discretionary implementation among member states. Discretion was allowed with respect to the timing and the degree of decoupling of policy support. Differences among member states were particularly apparent in...

Die vergangenen anderthalb Jahre haben sich für die Getreideproduzenten weltweit und in der EU zeitweise von ihrer besten Seite präsentiert. Die gezahlten Preise für Weizen haben ein Rekordhoch erreicht, von Mai 2007 bis Februar 2008 haben sie sich um mehr als das 1,7fache erhöht. Bis Juli...

This study investigated the effects of stocking density and photoperiod manipulation in relation to plasma estradiol-17? (E2) profile to enhance spawning activity in female Nile tilapia (Oreochromis niloticus) using F1 clonal crosses. The fish were divided into experimental and control groups...