Nematodes (C.O.: Meloidogyne spp., Radopholus similis, Pratylenchus spp)

Symptoms

• Stunting, chlorosis, necrosis of leaves – Aerial symptoms.
• Characteristic root galls and lesions lead to rotting are generally seen.
• Affected rhizomes have brown water soaked areas in outer tissues.

Management

• Use nematode free seed rhizomes.
• Solarize ginger beds for 40 days.
• IISR- Mahima is a resistant variety which may be cultivated.
• Pochonia chlamydosporia, a nematode biocontrol agent can be incorporated in ginger beds (20 gram/bed at 10E6 cfu/g) at the time of sowing.
• The nematodes can be controlled by treating infested rhizomes with hot water (50 degree C) for 10 minutes.
• Apply neem cake at the time of planting.