Soyabean Disease — Soybean D6
Collar rot / Sclerotial blight : Sclerotium rolfsii.
| Symptom | |
| Infection usually occurs at or just below the soil surface. Sudden yellowing or wilting of plants is the first symptom. Light brown lesions, which quickly darken, enlarge until the hypocotyl or stem is girdled. Leaves turn brown, dry and often cling to dead stem. Numerous tan to brown, spherical sclerotia form on infected plant material. Management Deep ploughing in summer. Crop rotation with maize or sorghum. Destroy infected stubble. Seed treatment with T. viride @4g/kg or P. fluorescens @ 10g/ kg of seed or Carbendazim or Thiram 2g/kg of seed. Spot drenching with Carbendazim 1g/lit or P. fluorescens / T. viride 2.5 kg/ha with 50 kg FYM. |
- Infection usually occurs at or just below the soil surface.
- Sudden yellowing or wilting of plants is the first symptom.
- Light brown lesions, which quickly darken, enlarge until the hypocotyl or stem is girdled.
- Leaves turn brown, dry and often cling to dead stem.
- Numerous tan to brown, spherical sclerotia form on infected plant material.
- Deep ploughing in summer.
- Crop rotation with maize or sorghum.
- Destroy infected stubble.
- Seed treatment with T. viride @4g/kg or P. fluorescens @ 10g/ kg of seed or Carbendazim or Thiram 2g/kg of seed.
- Spot drenching with Carbendazim 1g/lit or P. fluorescens / T. viride 2.5 kg/ha with 50 kg FYM.