Prevention and control of common diseases and insect pests of celery

Celery is a common vegetable in the vegetable market, after all, eating celery every day has many benefits, such as detoxification and nourishing blood, and the market sales situation is also good, so many people will plant it. When planting celery, there will be some common diseases. Today, the pro-agriculture network will tell you about some of the more common diseases of celery.

1. Soft rot

Although this is said to be caused by germs, it actually has a lot to do with the environment. The reason is that the germs originally contained in the soil entered the body of celery through some wounds, and then the bottom of the celery was relatively wet, causing germs. The symptom is that the roots are black and smelly, and you can feel rot with the touch of your hands. After removing the necrotic plants, it is recommended that 72% agricultural streptomycin sulfate soluble powder be sprayed for prevention and control.

2. Petiole cracking

The appearance of this disease shows that celery needs to add a certain amount of boron, and that the soil is too hydrated or too dry, so pay attention to drainage and sprinkling. The general symptom is celery rod cracking, if it is caused by drought, the crack will appear yellowing and withering, and if there is too much water, the color will not change obviously. If it is caused by drought, 0.1% color 0.3% borax aqueous solution should be sprayed with water, and if it is wet, a certain amount of borax should be applied.

3. Spot blight

This disease is generally a greater threat to the leaves, because the prevention and control is not perfect, resulting in the mycelium stubbornly attached to the celery, encountered the rainy season and induced the disease. It showed that the leaves withered and perforated in batches, and finally withered and fell. The harmfulness of this disease is relatively great, and it is necessary to spray the surrounding plants successively. The 600-fold solution of 75% chlorothalonil wettable powder has a better effect on this disease.

4. Virus disease

Most of these diseases are caused by exotic pests, especially aphids and so on. The early stage of the disease showed that the leaves were uneven, the color was dim, and there were some worms in the leaves. Severe in the later stage will cause the celery to stop developing and slowly die. The prevention and treatment of this disease should be divided into two aspects, one is insect prevention, the other is germ treatment. 15% virus Bike wettable powder 700-1000 times liquid spray is a more commonly used treatment, the interval is one week, lasting about a month.

The above are some common diseases of celery, we in the daily planting of diseases and insect pests prevention must be in place to avoid economic losses in the later stage. And in the later stage, the residue of the diseased body must be taken away and should not be left in the soil, so as not to cause secondary infection.