The role of biological simulation models in farming systems research

The use of biological computer-based simulation models is considered with reference to Farming Systems Research. Such models have a role to play in the design of appropriate technology packages for poor farmers. The potential benefits for speeding the design process are such as to encourage the finding of solutions to, or the minimisation of the impact of, the severe conceptual problems that exist. Certain characteristics in the design of biological models can be enumerated, which may be expected to facilitate their use in such a process.