1. There are several main approaches to rural development that have been used over the last 40 years, including conventional extension models, training and visit models, farming system research models, and cooperative extension models.
2. The document then describes each of these models in more detail, highlighting their key features and limitations. It provides examples of how each has been implemented in different countries.
3. Finally, the document outlines several methods for rural development, such as on-farm demonstrations, agricultural information services, crop maximizing programs, extension through fellow farmers, credit-based extension, women's extension services, and farmer training programs.