Pest and disease control of red grapes

Red grape is a kind of grape. It is a fruit with rich nutrition and high economic value. It is cultivated in many regions in China. However, some fruit farmers always encounter diseases and pests during the cultivation period of red grapes, which makes the quality of red grapes decline and the yield decrease, directly affecting the income of fruit farmers. So how to prevent and control the diseases and pests of red grapes? The following editor will tell you in detail.

Pest and disease control of red grapes

1. Downy mildew of red grapes

Downy mildew of red grapes is a common disease. After the disease occurs, it mainly harms the leaves and tender shoots of red grapes. In severe cases, the diseased parts will be necrotic, which directly affects the growth of red grapes. At this time, 40% of the Ridomil solution should be sprayed, and the agricultural anti-120 agent can also be used for treatment, both of which can achieve good therapeutic effects.

2. Powdery mildew of red grapes

Powdery mildew of red grapes is also a common disease during the cultivation period. This disease will cause the greatest damage to the leaves and young fruits of red grapes, causing a large number of white spots to appear on the surface of its leaves and young fruits. In severe cases, the diseased leaves and fruits will fall off. Powdery mildew of red grapes can be prevented and treated with drugs. Thiophanate-methyl and powdery mildew are ideal drugs for treating powdery mildew.

3. Red grape black rot

Black rot is also a common disease of red grapes. It has the most obvious impact on the tender shoots and young fruits of red grapes. At the beginning, this disease will cause some small reddish-brown spots on the leaves and young fruits of red grapes. The more serious the disease, the larger the spots, and they will slowly turn grayish white. Finally, the spots will turn black and slowly rot. The impact of black rot on red grapes is particularly obvious. After it appears, it should be treated with drugs in time. Drugs such as thiophanate-methyl and thiram are special drugs for treating black rot of red grapes. They can be diluted according to the proportion and then sprayed directly.