Free-living nematode

Trichodorus spp. and Paratrichodorus spp.

Foliar symptoms

• Patches showing slight damage and inhibited growth
• Heavy infestation can result in very poor emergence or plant death
• Free-living nematodes are vectors of tobacco rattle virus

Root symptoms

• Elongated brown spots of dead cells resulting in curved roots and stolons
• Bushy root system due to production of new lateral roots

Spread

• Mainly on lighter soil types
• Extensive list of host plants
• Vector of tobacco rattle virus (TRV) and associated spraing in tubers