What are the symptoms of turf wilt and how can it be prevented?

Turf Pythium wilt is a common disease of turf plants, and it has been proved that Pythium wilt occurs in all regions of the country, and the incidence of Pythium wilt is very common, which can cause damage to all species of turf plants. Especially the early maturing grass.

Cool-season turfgrasses such as grass, delicate grass and perennial ryegrass were the most seriously affected.

1. Causes of Pythium wilt

Pythium wilt occurs when plants are infected with Pythium, because Pythium is a mold that requires a lot of water, so if there is a large amount of water, Pythium wilt will appear. And Pythium is also susceptible to infection, which is one of the causes of Pythium wilt.

2. Pathogenesis conditions and symptoms of Pythium wilt

As long as there is the presence of Pythium, Pythium wilt will occur, often in some diseased dead grass and soil, as long as this species is contained, Pythium wilt will occur. There are two peak periods for the incidence of Pythium wilt, you can note that the first peak period of Pythium wilt is in the seedling stage of plants, and autumn-sown plants are most likely to occur. The other is the relatively high temperature and high humidity environment in summer.

After the onset of Pythium blight, it will slowly wither and eventually die.

3. Prevention and control measures for Pythium wilt

You can choose loose soil to plant lawn plants, do a good job of drainage, do not have the phenomenon of stagnant water, but also master reasonable irrigation, reasonable fertilization, and avoid excessive nitrogen fertilizer. Prune in time, but not too low, if you find the appearance of Pythium blight, eradicate the diseased plants in time to avoid infection.

Of course, in addition to the above-mentioned several methods of control of Pythium wilt pests and diseases, the most direct drugs can also be used**, and spraying drugs in advance can also prevent and control Pythium wilt. For example, weedin, methalene, ethylphosphine aluminum or methalene, manganese zinc, etc.

Your lawn wilt is actually a lack of nutrients in the lawn. Yes, it's okay to spray it with some nutrient solution. In other words, what is the nutrient solution sprayed? Then relatively speaking, he may be better.

The symptoms of turf wilt are that the diseased leaves are waterlogged and greasy when joined together, and the grass will slowly turn yellow, wilt, and eventually die. Generally, it is more common in the seedling stage of turfgrass and in the high temperature environment in summer, so it is necessary to take control measures.

Watering a large area with fungicide, watering once every ten days, and more than three times in a row can be effective! And the lawn should be controlled and kept dry!

What are the symptoms of turf blight? Can it be prevented? If I have this kind of symptom, it should be preventable, and I should be able to supplement some fertilizer in time.

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The first is brown spot disease.

Brown spot disease is one of the most common pest and disease disasters in planting lawn, and it is one of the most common pest and disease disasters in the Huanghuai River Basin in China.

Strawberry wilt occurs in strawberry producing areas in China, mainly for the root damage, due to the root damage, the plant is yellow and dwarf, and the serious one dies

What are the symptoms of turf wilt? How to prevent and control my partial blight, the disease is fried sharp, yellowing and partially withered You should spray some water often, and add some medicine to prevent this disease.

Hello, what I personally think is the best for you. The specific medical institution needs to be observed and considered by yourself.

There are still many ways to house in Zhejiang, depending on which method you use

It is better to go to a hospital with professional medical equipment as soon as possible!

1. Reasonable watering, requiring the soil to be dry and wet, not overwatering. It is best to choose the time of watering in the early morning or early afternoon, and in any case avoid watering in the evening or night.

2. Reasonable fertilization, to achieve balanced fertilization, do not be excessive nitrogen fertilizer, to humidify phosphorus and potassium fertilizer and organic fertilizer, too much nitrogen fertilizer is easy to cause growth, is the main reason for aggravating the disease.

3. Reasonable pruning, especially after pruning, clean up the dead grass. In the high temperature season, it is generally reduced by not less than 5 6 cm, do not cut too low, and then pay attention to whether there are germs when there is high temperature and humidity and dew on the foliage.

4. Mixed sowing should be carried out when the lawn is sown to improve disease resistance.

5. In the early stage of the disease, fungicides, especially systemic fungicides, should be used for spray control, which can be controlled with methyl manganese zinc, acetophosphine aluminum, allicin, difenoconazole, etc.

The key lies in doing a good job in the treatment of disease-free seeds and seed pesticides, and strengthening scientific conservation management and timely chemical control. Crown and root rot can be mitigated by minimizing adversity stress. Don't trim too low.

Remove the dead grass layer in time. Balance fertilization and avoid heavy nitrogen fertilization. Reduce the frequency of watering, and water appropriately and deeply, providing sufficient humidity without causing drought stress.

Grass thinning

For example, the lawn has been planted for many years, and the dead roots, stems, and leaves that die every winter form a dense layer of dead grass. When the thickness of the withered grass layer is larger, the microbial activity is frequent, which is easy to produce diseases and pests, and the water flows out along the withered grass layer, which is not easy to penetrate into the soil, and the root system is dry and easy to dehydrate in the dry grass layer, which affects the regreening and growth of the lawn. Therefore, before the spring regreening, the lawn should be cleaned with a dead grass layer, and there are two ways to clean the dead grass layer by using a walk-behind lawn comb and using a nail rake.

The best time for grass thinning is when the lawn begins to regreen in the spring, and under normal phenological conditions, the spring regreening of turfgrass is in March.

Comb the grass. If you don't have a lawn comb, you can use a rake to rake it, and then use a lawn mower to cut it flat.

If possible, spread a little sand on top.

The cinnamon medallion in the spring can only be removed manually.

Mower mower on it.

1.Lawn mowing Lawn mowing should be timely, and the cut grass clippings must be cleaned up in time to avoid residues on the lawn. Spring is the best time to remove the dead grass layer.

2.Remove weeds Remove weeds in time, and when removing weeds, they should be uprooted and removed in time.

3.Avoid over-application of nitrogen fertilizer Excessive application of nitrogen fertilizer can cause grass to grow too much and too densely, which will accelerate the formation of a dead grass layer.

4.Apply lawn comb machine For the formed lawn dead grass layer, the lawn lawn comb should be used to clean and rake it, which can remove dead grass leaves and young weeds. A combing rake also allows turf air to circulate, retains moisture, and encourages the breakdown of nutrients in the soil.

5.Application of lawn punch machine The lawn can be perforated with a lawn punch machine regularly every year. The puncture hole can not only promote water infiltration, but also promote air circulation in the soil, improve the physical properties and other properties of the soil, accelerate the decomposition of the dead grass layer of the turf, and promote the growth and development of the aboveground and underground parts of the turf.

6.Avoid human trampling During the growing period of the lawn, human trampling should be avoided to promote the reproduction of the lawn and prevent the formation of dead grass layer.

1. Breeding disease-resistant varieties. When planting turf, choose disease-resistant varieties or use the characteristics of different turfgrass varieties to mix, so as to improve the disease resistance of the lawn. It can effectively reduce the occurrence of diseases.

2. Strengthen scientific conservation and management. Before planting lawn, the clay soil should be mixed with sandy soil, and the sandy soil should be mixed with some pond mud; Poor soils were treated with organic fertilizer as basal fertilizer. This Xiangsheng strengthens cultivation management and increases phosphorus and potassium fertilizers.

Do not overapply nitrogen fertilizer in summer, and maintain a normal ratio of phosphorus and potassium fertilizer: do not apply nitrogen fertilizer during the onset period, and apply more phosphorus and potassium fertilizer to improve resistance. In particular, it is necessary to pay attention to the application of nitrogen fertilizer in the summer banquet.

3. Chemical control. The best way to control turf disease is to use a pre-aging anti-fungicide. In the autumn turf disease high incidence period, spray a protective fungicide every 10-15 days before the disease occurs.