A course on the latest prevention and control techniques of major diseases of garlic seedlings

Garlic seedling is a familiar vegetable, it is the emergence of garlic seedlings to a certain period of time, with the spicy taste of garlic, rich nutrition, but also the role of digestion, can prevent influenza, enteritis and other diseases. However, planting will be disturbed by a variety of diseases, if not timely control, it will cause huge losses, the following and Xiaobian to take a look at the prevention and control techniques of common diseases of garlic seedlings.

1. Purple spot

The main harm to the leaves, the disease begins from the leaf tip and pedicel, spread in the lower part in a short time, the appearance of white sunken spots, the middle is purplish, will gradually expand into a yellowish-brown oval spot. When the humidity is high, the disease spot will appear black mildew, these are the conidia of the bacteria, the disease spot is mostly according to the concentric wheel pattern, it is very easy to break.

Prevention and treatment methods: in the initial stage of the disease, chlorothalonil, paracetamol and antidote can be sprayed every 7-10 days for 3-4 times, and the control effect is better.

2. Leaf blight

The disease is a fungal disease, which mainly harms the leaves. In the initial stage, the disease starts from the leaf tip, gradually develops to the leaf stem, and will spread upward from the lower part of the plant. When the disease will appear white round spots, gradually expand into a grayish brown oval irregular bar, in a serious illness will wither the leaves of the whole plant and die. In the later stage, black mildew will also appear in the lesion, spreading small black particles.

Prevention and treatment: after the plant is infected, it should be treated in time to avoid the spread of the disease. Carbendazim can be sprayed every 7 days. Diesen zinc or chlorothalonil can also be sprayed once every 7 days for 2-3 times in a row, and the effect is better.

3. Soft rot

This is a bacterial disease, which can easily be induced in a low temperature and high humidity environment. First of all, it develops in the leaf margin or vein, forming yellow-white stripes along the leaf edge and vein, which can run through the whole leaf. When the humidity is high, the disease spot will appear yellowish-brown soft rot, accompanied by bad smell, and the leaves will lose photosynthesis completely. Generally occurs in the foot leaves, the leaves do not expand upward, and in serious cases, it will lead to the withering and yellowing death of the whole plant.

Prevention and control methods: this disease is mainly because pests bite leaves, leading to bacterial invasion, or pests carry germs, directly spread the disease. Therefore, if you want to reproduce soft rot, it is very important for pest control, early attention should be paid to the prevention and control of needle worms, mole cricket and other underground pests, seedling stage should pay attention to ground maggots, jumping beetles and so on. The disease can be sprayed with agricultural streptomycin and ammonium benzoate once a week and sprayed 2-3 times continuously according to the disease, the effect is better.

The above is the introduction of the prevention and control technology of the main diseases of garlic seedlings. I hope it can help you. If you want to know more about it, please pay attention to us.