How does the pepper appear in the tiger skin?

How does the pepper appear in the tiger skin? How do you prevent it? The symptoms are brown water-stained round or irregular shaped lesions with a diameter of about one centimeter. Most of them are sunken, the disease is healthy, and the spots are black or Orange-red small particles, which are typical symptoms of the disease. When the lesion is dry, it tends to shrink and rupture, and it hangs like a tiger skin, so it is also known as "tiger skin disease." When it is wet, the surface overflows with red sticky material, and the diseased fruit rots and falls off.

Tiger skin disease is generally divided into the following four types:

First, the side becomes white, and the edge of the whitened part is not obvious. The interior is not white or slightly yellow, and there is no mold layer, which means that one side becomes ginkgo, usually accounting for more than 50%;

The second is reddish-spotted fruit, the diseased fruit is fading, the spot is slightly red, and there is no mold in the fruit;

The third is orange-yellow-spotted fruit, the surface of the dried pepper has a mottled orange-yellow piebald, some of the lesions have black spots, and some black-gray mold layers in the fruit;

The fourth is black mildew, the surface of the dried fruit has a slightly yellowish spot, and the black stain is on the surface, and the black gray mold layer is sometimes seen in the fruit.

The main cause of "tiger skin disease" is that when stored outdoors, the humidity is high or dew at night, and the daylight is strong, which is not conducive to the retention of pigment. In addition, anthracnose and fruit rot can also cause fruit "skin disease".

To prevent pepper "skin disease", measures should be taken from the following aspects: 1. Use anti-anthrax varieties to reduce tiger skin disease caused by anthrax; 2. Use more concentrated varieties to reduce the time of fruit exposure in the field. 3. Strengthen the prevention and control of anthracnose and fruit rot during production; 4. In the fruit harvesting and processing, first, timely harvest, avoid rain, exposure and exposure in the field; secondly, the best after harvesting Drying equipment is used for processing and drying.

At the same time as the pepper is harvested, the pepper fruit should be carefully observed. Once the diseased plant is found, 80% of the anthrax fumei wettable powder 800 times solution, or 1:1:200 Bordeaux mixture, or 75% chlorothalonil wettability should be selected in time. Powder 500-600 times liquid, or 70% mancozeb WP 400-500 times solution, or 70% thiophanate-methyl WP 600-800 times solution, or 50% carbendazim WP 500 times Spray such as liquid, 7 times a day for 7 to 10 times. It is better to add 1:800 times of high-yield treasure when spraying.

In order to prevent the occurrence of this disease, the disease-resistant variety can also be selected, or the seeds can be immersed in warm water at 55 ° C for 30 minutes, then transferred to cold water for cooling, dried and then sown. It can also be soaked in 1% copper sulfate for 5 minutes, and then taken out and mixed with appropriate amount of ash or slaked lime. It is recommended to use seedlings to raise seedlings, to cultivate seedlings of appropriate age; to rotate with melons and beans; to cultivate in deep ditch and narrowly mulch, to be reasonably densely planted; to drain in time; to increase phosphorus and potassium fertilizer; to remove diseased leaves and diseased fruits in time.

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