Fusarium Wilt

General Caused by Fusarium udum. Seed and Soilborne. Survives on infected plant debris in the soil. Disease first appears on young seedlings of 4-6 weeks age but more wilting is observed during flowering and podding stages. More severe on black soils than on red soils. Ratooning pre-disposes the plant to wilt. Long and medium duration types suffer more than short-duration types. Management Select fields with no previous record of wilt for at least 3 years. Use disease-free seed. Grow pigeonpea intercropped or mixed with cereal crops. e.g. sorghum. Rotate pigeonpea with sorghum, tobacco, or castor every 3 years. Uproot wilted plants and use them for fuel wood. Solarize the field in summer to help reduce inoculum. Grow varieties resistant to Fusarium wilt. Seed treatment with 4gTrichoderma viride formulation + 3 g thiram per kg seed and a pplication of 2kg T.virideformulation mixed with 125 kg FYM per ha.

Dead plant due to Fusarium wilt Affected root system due to Fusarium Wilt Blackening of the xylem