Collar rot

General Information :   caused by Sclerotium rolfsil. Associated with high soil moisture content and presence of undecomposed organic matter near the soil surface.           Symptoms : Seen at the seedling stage (up to 6 weeks after sowing). Affected seedlings turn yellow. Young seedlings may collapse. Uprooted seedlings show rotting at the collar region. The rotten portion is covered with whitish mycelial strands. A white mycelial coating can be seen on the tap root of completely dried seedlings. Affectcd seedlings usually occur in small scattered patches in the field. Lesions on leaflets Died infected flowers

Control :   Avoid high soil moisture at sowing and seedling stage. Remove all undecomposed organic matter while preparing seedbed Grow resistant varieties Seed treatment with Rizolex, Vitavax 200 at 3 g kg -1 of seed.