What symptom does garlic soft rot have? How to prevent and cure?

Garlic is one of the common seasoning foods in our life. It tastes spicy and is good for the human body. Garlic is planted in many places in China, and it is easy to be attacked by diseases in the process of planting, such as soft rot. What are the symptoms of garlic soft rot? How to prevent and cure?

What are the symptoms of garlic soft rot?

Garlic soft rot is not only a bacterial disease, but also one of the main diseases of garlic, which has a great impact on yield and quality. Garlic soft rot is easy to occur under the conditions of low temperature and high humidity, especially in the soil with low-lying terrain, poor drainage and high groundwater level. Strengthening the management of moisture prevention in the field and keeping the soil dry can alleviate the disease. The incidence is generally mild in rainless years and arid areas. Most of the disease began in November, and yellow-white stripes were formed along the leaf margin or midrib. When the humidity was high, the disease showed yellow-brown soft rot and yellow bacterial pus appeared. The plant first fell ill from the lower leaves and gradually expanded to the upper leaves. In the later stage, only 2-3 leaves were slightly green, and the heavy ones were withered and yellow and died.

Second, how to prevent and cure garlic soft rot?

The principle of comprehensive prevention and control of garlic soft rot should be adhered to, and the main measures are as follows:

The main results are as follows: 1. Excellent garlic species are selected, which are virus-free, disease-resistant and disease-free.

2. It is appropriate to choose flat terrain, convenient drainage and irrigation, rich soil organic matter and strong ability to preserve fertilizer and water, and the previous crop is non-onion garlic soil to grow garlic. And fine soil preparation, to achieve the upper loose and lower solid, in order to block the source of the disease and avoid the conditions of the disease.

3. Fully apply mature high-quality organic fertilizer and cake fertilizer based on phosphorus and potassium fertilizer to promote the healthy growth of seedlings and improve the disease resistance of plants, so as to reduce the occurrence of physiological diseases.

4. Sowing at the right time, generally sowing before the first ten days of October, watering thoroughly after sowing, covering with plastic film after sowing, in order to increase soil temperature, preserve soil moisture and prevent drought, and promote garlic seed germination, seedling emergence and healthy growth as soon as possible.

5. Chemical control. Chemical control should do the following points: ⑴ garlic treatment: seed coating with 2.5% suspension seed coating agent with 0.25% seed weight before sowing, which can kill garlic pathogens; seeds can also be mixed with 50% carbendazim or 77% carbendazim or 77% Douning wettable powder, seed dressing method is 100 grams of each agent mixed with 5 kg water, can be mixed with 50-75 kg seeds, evenly mixed and then sown. ⑵ soil treatment: this method is suitable for plots where soft rot has occurred. The sowing ditch can be sprayed with 77% Douning wettable powder, 100kg per mu, and sown immediately after spraying, or copper sulfate, quicklime and plant ash can be mixed in the proportion of 11 100 and sprinkled in the garlic ditch. ⑶ chemical control: before or at the initial stage of the disease, spray 50 kg of 72% agricultural streptomycin 3000-4000 times per mu, or 47% plus Ruinong 750x, or 50% desenamine 1000 times, once every 5-7 days, 2-3 times according to the disease. Focus on spraying the lightly diseased plants and the plants around them, paying attention to spraying to the base of the plant stem. If diseased plants still appear after adopting the above measures, 72% agricultural streptomycin wettable powder 400x liquid or 77% agricultural streptomycin wettable powder 500kg / mu can be sprayed with 50kg / mu, spraying once every 7-10 days for 2-3 times, or using 3000-4000 times of neostigmycin to irrigate the rhizome.