Strawberry vein banding virus

Pathogen and disease type: Strawberry vein banding virus (often linked to the Closterovirus genus) is a systemic viral pathogen. It infects the vascular tissues of the host plant, causing long-term physiological stress. Being a virus, it is not curable once the plant is systemically infected, making management a strictly preventive challenge.

Crops: The primary host is the garden strawberry (Fragaria × ananassa). Other species within the Fragaria genus can also act as natural reservoirs for the virus. The disease is particularly damaging in commercial strawberry production where uniform quality and high yields are required.

Symptoms and signs: The characteristic symptoms include yellowing or banding along the leaf veins or margins. Affected leaves may appear distorted, crinkled, or exhibit uneven growth. In severe cases, the entire plant becomes stunted, showing significantly reduced vigor and chlorophyll deficiency compared to healthy crops.

Conditions for development: The virus is transmitted from plant to plant primarily by the strawberry aphid (Chaetosiphon fragaefolii). The transmission efficiency depends on aphid population density and the proximity of infected plants. Warm weather promotes higher aphid activity, which in turn accelerates the spread of the virus throughout the strawberry field.

Harmfulness and protection measures: The infection leads to significant yield losses, smaller berry size, and a general decline in the longevity of the strawberry bed. There is no chemical treatment to eradicate the virus from the plant. Therefore, control measures emphasize the use of certified virus-free nursery stock, systematic aphid monitoring, and the prompt removal of infected plants to reduce inoculum pressure.

• Utilize high-quality, certified virus-free planting material.
• Maintain a strict aphid control program using approved insecticides.
• Rogue (remove) symptomatic plants immediately upon detection.
• Establish isolation zones from older, abandoned strawberry fields.
• Control weeds in and around the field that may host the virus.