Improving fungicide efficacy for management of Cercospora leaf spot in sugarbeet

Cercospora leaf spot is a serious disease that reduces sugarbeet yield and sugar quality. Due to fungicide resistance of C. beticola, effective fungicide options are becoming increasingly limited. Improving the efficacy of remaining fungicides is necessary to ensure their use is both effective and contributes to sustainable fungicide practices. The use of deposition aids and optimum carrier volumes to improve fungicide penetration and deposition may provide more effective applications, resulting in improved disease management. The objectives of this research are: (i) to evaluate the effect of a deposition aid on fungicide efficacy at different application carrier volumes, (ii) to evaluate the effect of the deposition aid MVO on spray deposition and penetration within the sugarbeet canopy.