Anti-mildew spectrum of mildiomycin

Mildiomycin (MIL) was effective by foliar application against eight genera of powdery mildew fungi on fifteen kinds of plants. Its effect at 80ppm was equal to that of quinomethionate on cucumber, and surpassed quinomethionate and the other fungicides on almost every other plants tested. MIL was also effective against benomyl-resistant strain of Sphaerotheca fuliginea, causative fungus of cucumber powdery mildew. Phytotoxicity was not observed on any plants tested. The systemic property of MIL was shown under the soil-free condition by rootsoaking. Translaminar activity of MIL, which was proved on tobacco leaves seemed to explain its good control effect against Leveillula taurica, an endoparasitic fungus causing powdery mildew of green pepper.