The latest common diseases of potato and their control

Potato is an important planting project in China, which has a wide range of uses. But its disease is also a relatively many, especially its fruit grows in the ground, so what is more difficult to explore. Below the pro-agricultural network to introduce you to several common diseases, so that you have a certain understanding of this aspect.

1. Late blight

Potato late blight mostly occurs on the leaf surface, and spreads to the potato with the passage of time, the disease is more obvious. At the beginning of the disease, the leaves began to appear some spots, slowly brown, dry conditions will make the whole plant slowly dry, withered; if the environment is humid, it will begin to rot and stink, and finally the fruit will become the same. You can use 50% nail cream copper 700ml 800 times solution, not once on Monday, lasting for a month.

2. Powder scab

The incidence of potato scab is mainly concentrated in the roots and fruits, and some dark brown spots will appear on the surface of the potato, and finally break to form a rugged pit. When the disease occurs, it will be found that there are some swollen pimples in the roots of the plant, and finally split into pit spots. It mostly occurs in the rainy season. It can be sprayed with 1500 carbendazim wettable powder, or soaked in 2% hydrochloric acid solution for 3-5 minutes before sowing, and sowed after drying.

3. Dry rot

Dry rot has a great effect on the fruit of potato, and the disease is mainly concentrated on the fruit. The performance of the potato fruit surface will appear concave brown spots, and then slowly into the inside corrosion, accompanied by white mildew, and finally the whole fruit inside showed black dry matter, the most serious is that the whole fruit is in a state of dry rot. 58% metalaxyl manganese-zinc wettable powder can be used for control at the initial stage of planting.

4. Soft rot

This is a disease that occurs in many plants, largely because the land is too wet, so the disease means that this piece of land is too wet, and its biggest feature is a bad smell. When the disease will start from the wettest leaves, and then spread to the entire plant, the disease will become rotten, and the place where there is no disease will turn yellow. 50% Chlorothalonil wettable powder 500 times solution can be used for prevention and control, and if serious, it is best to remove the plant in time to avoid spread.

Of course, there are many other diseases of potato, but we only list a few common diseases at present. We should pay attention to these diseases, not only in the areas where they occur, but also in other areas. This can better ensure the output.