Soybean

Pests and Disease management Collar rot

Symptoms

  • Pathogen attacks collar region and causes damping off in younger and collar rot in older plants resulting drooping or wilting of plants.
  • The characteristic symptom is formation of white cottony mycelium with reddish brown to dark brown mustard size sclerotia on the surface.

Mangement

  • Deep summer ploughing.
  • Crop rotation with maize or sorghum.
  • Destruction of infected stubble.
  • Seed treatment with T. viride @4g/kg or P. fluorescens @ 10g/ kg of seed.
  • Spot drenching with P. fluorescens / T. viride 1 kg/acre with 20 kg FYM.
  • Metarhizium anisopliae 1.0% W.P. @ 2kg/acre + Trichoderma Viride 1.0% W.P. @ 2 kg/acre mixed in manure and applied before sowing.
  • Soil drench with Trichoderma Viride 1.0% W.P. @ 1-2kg/acre or Pseudomonas fluorescens 1% WP 1-2 kg in 200 litres water per acre.