Larena SC fungicide uses the power of two fungicide modes of action to control key fungal pathogens in grapes, apples, pears, peaches, nectarines, cherries, Plums, Onions, Garlics, leeks and other crops. Larena SC is a combination of two active ingredients; Fluopyram and tebuconazole. Fluopyram belongs to a novel Succinate Dehydrogenase Inhibitor (SDHI) chemical class discovered by Bayer. It controls fungal pathogens by blocking energy production through targeting the respiration process in the mitochondria of the fungus cell. Tebuconazole is a demethylation inhibitor (DMI), it controls fungal pathogens by interfering in the process of building the fungal cell wall, consequently, inhibiting the reproduction and continued growth of the fungus.