<i>In Vitro </i>and<i> in Vivo </i>Management of <i>Sclerotium rolfsii</i> the Cause of Sugar Beet Root Rot Disease

Management of sugar beet damping off and root rot diseases caused by Sclerotium rolfsii is urgently needed. Therefore, antifungal activities 13 materials including 2 bio agents, seaweeds, 3 chemical inducers 6 fungicides were evaluated. Required inoculum potential either fungal mass or sclerotia to reach more than 50% disease incidence was firstly investigated. Fungal inoculation (40-500g/10kg soil) provided 70-100% 100% rot. Meanwhile, 6.7-36.7% no negligible obtained using 300-500 /10kg soil. On the other hand, S. mycelial growth completely suppressed in vitro all tested materials. However, various these shown vivo after seed soaking in 1st (2020/2021) trail followed soil drenching 2nd (2021/2022) trail. Tipo top (Tebuoconazole 25.9%: 1cm/L) fungicide most effective material since seedling survival up 80%, potassium silicate (1cm/L) Score (Difenoconazole 25%: fungicide. Seed with protected from sowing harvest enhanced weight. Additionally, this study illustrated that both weight sucrose content decreased as severity increased. In conclusion, are unfortunately still fast potent way for management, especially limitation resistant cultivars.