Farming for the future: an introduction to low-external-input and sustainable agriculture.

Part 1 LEISA - an emerging option: agriculture and instability sustainability and farmers - making decisions at the farm level technology development by farmers. Part 2 Principles and possibilities of LEISA: low-external-input farming and agroecology basic ecological principles of LEISA development of LEISA systems. Part 3 Linking farmers and scientists in developing LEISA technologies: actors and activities in developing LEISA technologies PTD in practice - process and methods.