What does the published scientific research say about Willaertia magna?

The Willaertia magna scientific literature documents a dual mode of action: the lysate both elicits plant immune defense pathways and exerts direct antifungal activity. Studies covered grapevine against Plasmopara viticola (downy mildew), potato and tomato against Phytophthora infestans (late blight), and tomato against Oidium neolycopersici and Leveillula taurica (powdery mildew).

Efficacy figures reported in peer-reviewed research include up to 77% protection of grapevine bunches in field trials, up to 80% disease reduction in potato greenhouse studies, and 49–77% field protection against potato late blight depending on disease pressure. A tomato study reported activity against both late blight and powdery mildew in a single product application.