Potato cyst nematodes: Globodera rostochiensis and G. pallida

Symptoms

• Yellowing of leaves and stunting of plants
• Patchy appearance of plant stand.
• Early senescence and proliferation of lateral roots.
• Small immature females of white and yellow stages on the roots at flowering.
• Females can be observed on the tuber surface but with less frequency.

Management

• Long crop rotations of 3-7 years. Members of the Graminaceae and Leguminaceae are crops generally used in these rotations.
• Use of resistant cultivars (Kufri swarna and Kufri thenmalai)
• Adjusting sowing time to escape from the nematode damage .
• Use of non fumigant nematicide carbofuran 3G @1-2 kg a.i/ha (33 - 66 kg/ha).