Soybean

Pests and Disease management Charcoal rot

Symptoms

  • The infection of soybean usually occurs early in the season during seedling emergence and early growth stages.
  • leaflets turn yellow followed by browning and wilting. The brown leaves remain attached to the petioles.
  • A light grey to silver colour discoloration is visible in the taproot and lower stem, when plants are split open. Black specs (microsclerotia) will be visible in this tissue of the stem and tap root.

Mangement

  • 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.