Application of multiple criteria decision making for the design and analysis of greenhouse cropping systems

Greenhouse cropping systems have various objectives and can be controlled in various ways. Selection or design of an optimal cropping system requires weighing of the objectives as well as proper understanding of the input-output relations of the system. The field of Multiple Criteria Decision Making (MCDM) provides a set of mathematical techniques that may help to reach a decision in optimisation problems in which more than one objective play a role. Two examples of the use of MCDM are given. The benefit of simulation models to generate quantified production systems is shown using the model CHRYSIM for year-round chrysanthemum production. In the second example, Interactive Multiple Goal Linear Programming, an MCDM approach: is introduced and illustrated in the optimisation of water and nutrient use of rockwool-grown tomato.