Simulation modelling of plant diseases to rationalize fungicide use

Abstract

The use of systems simulation modelling to predict crop loss and cost/effectiveness of pesticide use may reduce the need for schedule spraying of crops as an “insurance policy” against disease. The barley leaf rust (Puccinia hordei) model described here will form part of an information system designed to provide rapid feedback of information on disease development which the farmer can then use to assess benefits to be expected from spraying as opposed to the costs of application.