Vegetable Research & Innovation

An evaluation of downy mildew control in onions with registered fungicides

This field trial evaluates downy mildew control in onions with registered fungicides. This field trial is an extension from the laboratory trials carried out by Plant & Food Research testing for resistance of fungicides to downy mildew (Wright and Beresford, 2019).  In this Pukekohe-based field trial a variety of fungicide treatments were applied and their ability to control downy mildew incidence was assessed. Applications of Zampro, Acrobat, Zorvec Enicade + Dithane and Reason + Dithane all provided significant and consistent downy mildew control. Overall, There was no significant difference in downy mildew control between the fungicide treatments. These results have been generated from a single field trial and as such should be interpreted with this in mind.