Pinot disease, also known as Grapevine Pinot gris virus (GPGV), is a viral disease that affects grapevines, particularly the Pinot gris variety. It's a relatively new disease, first discovered in 2012, and can lead to significant yield losses and negatively impact wine quality.
Symptoms of Pinot Disease
- Stunted canes: The canes on affected vines are shorter than normal, with shorter internodes.
- Smaller leaves: Leaves on infected vines are smaller than healthy leaves, often displaying a distorted shape.
- Yellowing or bronzing of leaves: This symptom is most prominent in spring and early summer.
- Reduced fruit set: Infected vines produce fewer grapes, leading to decreased yields.
- Changes in grape flavor and aroma: The quality of the grapes can be negatively impacted, affecting the final wine.
Transmission of Pinot Disease
GPGV is primarily spread through infected plant material, such as cuttings, grafts, and budwood. It can also be transmitted by insect vectors.
Management of Pinot Disease
- Use certified virus-free plant material: This is the most effective way to prevent the disease.
- Monitor vines regularly: Early detection allows for timely intervention.
- Remove and destroy infected vines: This helps prevent further spread of the disease.
- Control insect vectors: This can help minimize transmission.
Pinot disease is a relatively new threat to the grape industry. Early detection and appropriate management strategies are crucial to minimize its impact on grapevine health and wine quality.
