Symptoms of rose powdery mildew Prevention and control of rose powdery mildew

Roses are very dazzling flowers, and each plant has thorns. If they bloom in spring, they will become redder and more dazzling in autumn. The fruits of roses are bright, and both the flowers and fruits have bright colors and high ornamental value. But in addition to these characteristics, roses are also known for powdery mildew. Let's learn about the prevention and treatment of rose powdery mildew.

Prevention and Control of Rose Powdery Mildew

1. Symptoms of rose powdery mildew

Rose powdery mildew is a relatively common disease. The main problem is that it directly harms the leaves or tender buds of roses. When roses are first infected with powdery mildew, small round spots will appear on the leaves. These spots will appear white and gradually expand. After that, the powdery mildew will slowly spread to involve the entire plant. Rose powdery mildew causes the leaves to curl and fall off, and the new plants begin to twist and shrink. Therefore, powdery mildew is a relatively deadly disease for roses.

2. Prevention and control of rose powdery mildew

First: Strengthen the management of roses. The first thing is to control the planting density of roses. Too compact density will lead to insufficient ventilation and insufficient light transmission. Therefore, strengthen the planting management of the plants, outline the plant shape of the roses and promptly remove diseased shoots and leaves to reduce the overall risk of infection.

Second: Choose to use triadimefon for disinfection, once a week.