Cowpea (Vigna unguiculata) is an important staple in Burkina Faso as well as many other countries in West Africa. Among the major cowpea pests affecting the crop are the legume pod borer (Maruca vitrata), flower thrips (Megalurothrips sjostedti), bruchids (Callosobruchus maculatus), and...

This article examines the impact of Bt corn adoption in the Philippines using an econometric approach that addresses simultaneity, selection, and censoring problems. Although previous literature emphasizes the importance of simultaneity and selection problems, this is the first study that...

This study examines the impact of Integrated Pest Management-Farmer Field School (IPM-FFS) programs on groundnut productivity in Ghana. The program is conducted in the groundnut growing regions of Ghana with the goal to improve groundnut agriculture through the dissemination of information and...

This paper develops an endogenous growth model which links pollution to ineffective input-use, which can be reduced through conservation capital investment. It derives the conditions under which individual preferences for environmental quality and private investment in conservation capital can...

Environmental Kuznets Curve depicts the long-term relationship between pollution and economic growth. It hypothesizes that during the initial stages of economic growth environmental quality will deteriorate, then, after reaching some turning point, it will improve as the economy grows. In the...

There has been a significant increase in private sector participation (PSP) in the urban water supply and sanitation (WSS) sector in recent years. However, even with increased PSP, public authorities will still have to: ensure that the service providers do not use their market power to exploit...

Standard models of management of a single-species fishery generally assume that the biomass is of known size and that it is generated by a well-specified deterministicgrowth law. In reality the biomass is of uncertain size and usually subject to random growth. Several authors have addressed the...

The importance of resource rent in fisheries has long been acknowledged. By generating such rents, economically efficient management systems increase value added and the sector’s contribution to the gross domestic product (GDP) and growth. However, despite the successful adoption of such...

Reduction of carbon emissions from deforestation and forest degradation (REDD) has been identified as a cost effective element of the post-Kyoto strategy to achieve long-term climate objectives. The success of REDD depends primarily on the design and implementation of a financial mechanism that...

Replaced with revised version of paper 08/06/10.