Crop yield simulation and land assessment model for Botswana. Cyslamb. Part 1. Theory and validation.

The Crop Yield Simulation and Land Assessment Model for Botswana (CYSLAMB) has been developed to serve thd needs of land evaluation in a semi-arid environment. By modelling the interaction of environmental variables, physiological responses, inputs and management, CYSLAMB predicts the yield of a particular crop production system on a specified land unit. The use of actual rainfall data for individual years enables evaluation of interannual yield variability and quantification of risk in the specification of land suitability.

Additionally, by modifying the input and management specifications of the production system, the impact of such changes on yield can be evaluated, and extension recommendat ons can be more closely targeted.