Simulating and mapping agricultural land productivity: An application to Macadamia nut

A procedure for simulating and mapping land productivity was developed. The procedure used only existing data such as soil surveys based on soil taxonomy, weather records and yield either from published sources or collected from producers. It provides a means of assessing quantitatively the likelihood of introducing new crops to a region. The need to estimate benefits from crop inputs modification such as irrigation and fertilizer can also be met by this procedure. It can also be used to help select crop performance test sites for maximum extrapolation of test results to a large area.