Chickpea dwarf virus

Chickpea dwarf virus, caused by pathogens within the Mastrevirus genus, represents a significant viral threat to chickpea cultivation globally. As a systemic disease, it profoundly disrupts the plant's physiological development, leading to substantial yield losses across various agricultural environments.

The causative agent belongs to the Geminiviridae family. The virus is primarily transmitted by leafhoppers, which acquire the pathogen while feeding on infected plant sap and subsequently inoculate healthy plants. Because mechanical transmission is rare in field conditions, managing the insect vector population remains the primary strategy for limiting disease spread.

Symptoms of the infection typically include severe leaf distortion, where foliage becomes small, crinkled, and stunted. The plants exhibit a characteristic dwarf appearance, hence the name of the disease. In advanced stages, plants show distinct chlorosis, shortened internodes, and a significant failure to flower or produce viable pods.

The development and spread of the virus are heavily influenced by warm weather, which promotes the migration and feeding activity of leafhopper populations. Weed reservoirs surrounding the fields serve as primary overwintering sites for the virus. Regular scouting for vector density during critical chickpea growth stages is essential for effective risk management.

• Utilizing certified, disease-free seed stock.
• Controlling weed hosts in and around the field margins.
• Applying insecticides to suppress leafhopper populations.
• Adjusting planting dates to avoid peak periods of vector activity.
• Maintaining spatial isolation from existing, older chickpea fields.

The economic impact of the virus extends beyond direct yield reduction; it also severely degrades grain quality. Furthermore, infected plants often show decreased resistance to secondary pathogens, leading to potential crop losses ranging from 50% to 80% in severe outbreak years, necessitating an integrated pest management approach.