STARGUS Biofungicide is a beneficial rhizobacterium (Bacillus amyloliquefaciens strain F727) that colonizes plant roots, leaves and other surfaces to prevent the establishment of fungal or bacterial plant diseases. STARGUS protects plants by inhibiting spore germination, mycelial growth and sporulation of disease-causing fungi. Optimum disease control is acheived when STARGUS is applied preventatively and on a regular interval.