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This article argues that the goals of agricultural research in poor countries have changed substantially over the last four decades. In particular they have broadened from the early (and narrow) emphasis on food production to a much wider agenda that includes poverty alleviation, environmental degradation, and social inclusion. Conversely, agricultural research systems have proved remarkably resistant to the concomitant need for changes in research focus. As a result many, at both the national and international level, are under great strain. In terms of public policy the article goes on to suggest that shortcomings of existing conceptual approaches to technology development could be supplemented by adopting analytical principles that view innovation in systemic terms. An approach where flows of knowledge between institutional nodes is a key to innovative performance (the "National Systems of Innovation" approach) is suggested as one such conceptual framework that might help supplement conventional policy analysis.Hall et al. 71

This article discusses how extension should be taught at the undergraduate, M.Sc. and Ph.D level in India. Major changes are needed to prepare students to work in a rapidly changing environment. Extension education is at present in a crisis, because it has not yet adjusted to these changes. As extension graduates are not prepared to perform the roles the market demands, they have difficulties to find a job. In order to prepare the students for the present needs, more training is needed in participatory extension approaches, organizing farmers' groups, planning extension strategies to meet farmers' needs, Human Resource Development and the use of Information and Communication Technologies. The students ought to learn how to apply theories in these areas in the field situation. For this purpose not only agricultural graduates, but also other social scientists should participate in teaching extension. It should become clear which students will be trained to become an extension field worker, and extension manager or an extension researcher.

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The number and types of organizations providing extension services in