Commodity levies are used increasingly to fund producer collective goods such as research and promotion. In the present paper we examine theoretical relationships between producer and national benefits from levy‐funded research, and consider the implications for the appropriate rates of...

A model of the organization of the international wheat market is presented (a) to explain historical competitive behaviour in the market and (b) as a framework for analysing the likely effects of changes in market conditions on competitive behaviour. In the model the market is segmented into...

Productivity often increases in a part of an industry while remaining unchanged in the rest of the industry. In assessing the social gain from a productivity increase in a part of an industry producing a tradeable commodity it is necessary to consider the relationships between the part of the...

Placing a price on greenhouse gas emissions using an emissions tax or auctioning tradable permits provide the least cost government intervention to reduce pollution. Initial effects of the charge on pollution include an increase in the relative prices of greenhouse gas intensive products and...