BAYER Serenade ASO Organic Bio Fungicide, 2.5 GallonsSerenade ASO is an organic broad spectrum biofungicide that can be applied to many different crops and is effective against soil and foliar bacterial and fungal diseases. Applied at planting or through chemigation, Serenade ASO quickly builds a disease protection zone around the seed or transplant. Applied as a foliar spray, Serenade ASO protects crops against diseases; both applications result in higher yields. Key Benefits Effective Control Directly