Chickpea cyst nematode

The chickpea cyst nematode (Heterodera ciceri) is a sedentary endoparasitic nematode belonging to the order Tylenchida and the family Heteroderidae. It is considered one of the most serious soil-borne pests for chickpea production globally, causing significant economic losses in various cropping systems.

This nematode primarily infects chickpeas (Cicer arietinum), but it can also parasitize lentils, peas, and specific vetch species. The pathogen survives in the soil as encysted eggs, which are remarkably resilient to adverse environmental conditions, ensuring long-term persistence in the field even in the absence of a host crop.

The life cycle begins with the hatching of second-stage juveniles triggered by root exudates. After penetrating the roots, the nematodes induce the formation of specialized feeding sites known as syncytia. Females eventually swell and break through the root epidermis, forming tough brown cysts that protect the next generation of offspring.

Visible damage symptoms often appear in patches within the field. Affected plants exhibit stunted growth, chlorosis, and reduced pod formation. Because the root system is severely compromised, the plants are unable to absorb water and nutrients efficiently, which often leads to wilting and, in extreme cases, total crop failure.

• Implementing long-term crop rotation cycles involving non-host crops.
• Utilization of resistant or tolerant chickpea cultivars as a primary defense.
• Sanitation measures to prevent the spread of infested soil via farm machinery.
• Application of nematicides or biological control agents in high-pressure areas.
• Maintaining soil fertility to help plants recover from root tissue damage.