A novel mathematical approach to the prevention of fungicide resistance

摘要

AbstractThe influences of alternated or combined fungicide treatments on the development of fungicide resistance in pathogens were compared. Mathematical deduction indicated the importance of the decreasing activity of the spray residue in the periods between two treatments. It is suggested that with similar fungicide protection, resistance will usually develop more slowly with combined than with alternated treatments in the case of fast‐growing pathogens, and also when shortlived fungicides are applied in a poor spray cover. In other circumstances both methods of treatment proved to be equally effective in the prevention of resistanc