Description:

• High soil moisture, poorly drained soil, dense canopy, and several cultivated crop hosts and weeds are favourable conditions for collar rot.
• The disease spreads through infected soil, contaminated tools, infected seedlings, and water.

Damage Symptoms:

• The lower portion of the stem is affected by the soil-borne inoculum. Decortications are observed.
• Exposure and necrosis of underlying tissues may lead to the collapse of the plant.
• Mycelia and sclerotia are seen at the lower part of the stem.

Preventive Measures:

• Collection and destruction of diseased plant parts and portions.

Control Measures:

• Seed treatment with 4g of Trichoderma viride formulation per kg of seed.
• Spraying with Mancozeb at 2g/L of water.