Oilseed rape : disease development, forecasting and yield loss relationships

Abstract

A series of fourteen replicated plot scale experiments was established between 1991 and 1994 to determine the effect of disease on the yield of winter oilseed rape and the economic threshold and optimum fungicide timings for disease control. The cultivar Envol was selected for use throughout the experiment as it was a popular cultivar and was moderately susceptible to both canker and light leaf spot