This paper examines whether the growth in agricultural trade of 69 countries between 1996 and 2006 has taken place at the intensive or the extensive margin. The paper addresses the questions: have agricultural exports during this period expanded more through the intensive margin (more exports of established goods to traditional partners) or through the extensive margin (new trade flows in new products and/or to new partners)? At the intensive margin, do richer countries export greater volumes, or do they receive higher prices for their goods? At the extensive margin, are new trade flows the result of an expanded variety of products or the result of exporting established products to more destinations?

In an attempt to combat problems of insect resistance and the increasing cost of new insecticides, integrated pest management (IPM) systems have been developed for many crops, including cotton. Cotton IPM systems include such components as scouting to determine when control actions should be taken, planting trap crops, and using short season varieties of cotton. Regardless of the component(s) of IPM systems for cotton, when a decision is made that a direct control action is warranted, the control action most often used is the application of insecticides. Thus, although IPM strategies may reduce the frequency of insecticide applications and consequently reduce the possible problem of insecticide resistance, the use of conventional, broad-spectrum insecticides continues to be the primary control tool when insect outbreaks occur.

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This paper is published under the responsibility of the Secretary-General of the OECD. The opinions expressed and the arguments employed herein do not necessarily reflect the official views of OECD countries. The publication of this document has been authorised by Ken Ash, Director of the Trade and Agriculture Directorate. This paper and any map included herein are without prejudice to the status of or sovereignty over any territory, to the delimitation of international frontiers and boundaries and to the name of any territory, city or area.

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