- Caused by Sclerotium rolfsii
- Usually appears within
a month of sowing scattered over the field (Fig.).
- Seedlings turn slightly chlorotic before they
- Rotting in the collar region covered with
white mycelial growth; this differentiates collar
rot from other seedling diseases caused by Fusarium,
Rhizoctonia, or Pythium.
- Affected seedlings can be easily uprooted, but the lower part of the root usually remains in soil.
- Previous crop stubbles should be buried deep
and is allowed to decompose well before pigeonpea
is sown again.
- Sow when soil moisture is low
- Seed dressing with Tolclofos-methyl, Captan
or Thiram @ 3 g/kg seed.
- Soil application of Trichoderma viride @ 2.5 kg/ha mixed with 50kg FYM
seedlings due to Collar Rot