What are the control measures for blueberry mosaic disease?

Mosaic disease is a relatively common disease in blueberry production. When it occurs, it can reduce yield by about 15% and also affects fruit quality, causing considerable damage. Below, the editor brings you the symptoms and control methods of blueberry mosaic disease. Let's take a look.

1. Symptoms

Mosaic disease, as the name suggests, is a disease that damages leaves and flowers. When it occurs, the leaves on one or more branches develop pink, yellow or yellow-green mottling and red stripes, and spots and ring-like blight also appear, and in severe cases purple lesions form. After fruiting, it also infects the fruit, causing lesions to appear on the fruit surface, leading to slow fruit growth or the formation of mummified fruit that drops off easily. After the fruit ripens, its quality is also extremely poor, with a yield reduction of about 15%. If not controlled in time, the yield reduction may become even more severe.

2. Transmission routes

The disease does not occur every year and may be related to light intensity and field air permeability. Its main transmission routes are through aphids and virus-carrying seedlings and soil. The virus lurks inside the seedlings, and when the plant grows to a certain extent, the virus begins to activate and spreads the disease through soil and water flow, causing plants in the area to become infected. Especially during aphid outbreaks, after aphids feed on the sap of virus-carrying plants, the virus lurks inside their bodies, and when they feed on other plants, the virus is transmitted through them.

3. Control measures

To effectively control the occurrence of this disease, the plot should be treated before planting, diseased and residual plants and weeds should be cleaned up in time, and after plowing and leveling the soil, disinfection work should be done well. When planting, choose strong-growing, highly disease-resistant, disease-free seedlings. After planting, strengthen field management, apply more fertilizer to improve disease resistance, prune appropriately, and maintain good ventilation and light transmission in the field to reduce the chance of disease. For control, effectively use insecticides to spray aphids, control the aphid population, and cut off the transmission routes. For mildly affected plants, the diseased branches can be pruned off and pesticides sprayed, while severely affected plants can be pulled out and taken out of the orchard, and the diseased planting holes should be disinfected well.

The above is an introduction to the control measures for blueberry mosaic disease. We hope it can help you. To learn more related knowledge, please stay tuned to us.