White Yam (Dioscorea rotundata)
Nematodes (Scutellonema bradys, Meloidogyne incognita)
Symptoms
- The warty appearance of the tuber is a result of nematodes attacking the plant.
- Stunted growth of roots
Management
- Treat seed material with talc based formulation of Bacillus macerans (3 gram (10E6 cfu/g) per kg of corms).