Peanut white silk disease is getting more and more serious, what medicine should be used for peanut

In life, we often see some crops and see some fields, and these crops and fields are planted with all kinds of crops. However, sometimes some crops can also get sick. So what we have to understand today is that the white silk disease is getting more and more serious, so what medicine should be used when suffering from this white silk disease?

Spread by bacteria Because of the occurrence of white silk disease, it is transmitted by some bacteria in the soil, and it can also be spread through some seeds, and so many leukemias occur, which are getting worse every year. It has even led to a serious reduction in production, and this disease is very difficult to treat, and it is very harmful to the occurrence. Therefore, if the peanuts raised by farmers suffer from this disease, it will cause them a lot of losses.

So what kind of medicine should be used to completely cure this disease? Then we need to take it step by step.

If this disease is found, we must pick out the peanuts with white silk disease in time and deal with them in time after picking them out. Prevent them from spreading to other peanuts in the peanut pile, and we need to carefully inspect each peanut to ensure that there is no widespread spread in the peanut pile. The second is that we need to rotate crops such as peanuts with wheat and rice, so that some bacteria can be eliminated from the soil.

At the same time, we can also promote the consumption of some enzyme bacteria such equipment methods, through which the soil environment can be improved and can be better grown.

Spray some pesticides, and finally we can also use some agents, for example, we can use more than 20% carbendazim and 1000 1500 times the liquid of Jinggangmycin suspension. With these pesticides, we can only use these agents when we really have no choice, because in fact, spraying pesticides is more or less harmful to crops. And there is also a certain harm to the soil, even if they can solve the problem of peanut white silk disease well, we must be cautious to use.

The drug thifuramide is very effective for the white silk disease of peanuts, which can prevent the occurrence of this disease very well, and it is also very good for the growth of peanuts.

At this time, carbendazim can be used, which is particularly effective, and its spraying effect is also very large.

Thiofuramide, brassinolide, and thiophanate-methyl are added together, and then sprayed around the peanuts according to the proportion.

You can use 240 grams of thiofuramide 1500 times or use mixed agents, such as sclerotinia sclerotiorum, carbendazim, promehydrazim, etc., and you can also use Haolik instead of carbendazim to complete the preparation, each medication 3000-4500 hectares

It should be noted that the adjacent plots should be jointly prevented and controlled to avoid the remnant, multiplication and expansion of germs, so as to reduce the disease index. In addition, in the peanut needle stage, you can use powdered rusting emulsifiable concentrate or carbendazim wettable powder on the rhizomes, 100-200 ml per hole, and irrigate 1-2 times according to the condition, which can effectively control the epidemic of diseases.

It can be applied in early July, before the onset of the disease, sprayed once every 7-10 days, sprayed 3-4 times continuously, and the agent can be mixed or used alternately.

Prevention method:

Before planting, it is necessary to choose varieties with higher yield and strong disease resistance, such as: Fenghua No. 1, Huayu 16, Huayu 17, etc., and at the same time to ensure that the seeds are disease-free, it is necessary to carefully screen, dry the seeds, remove mold and seeds, and treat the seeds with pesticides.

It should be noted that 100 grams of agent stir 20-25 kg of peanut seeds to inhibit the generation of pathogens from the source.

At the same time, fungicides should be sprinkled on the surface to achieve the purpose of eliminating sclerotia, and fungicides should be used in strict accordance with the corresponding ratio, respectively, thiophanate-methyl, methyl-liphosphine, sclerotinia net, sodium dichloroisocyanurate and other chemical agents, which are applied to the soil surface after stirring evenly, which can reduce the occurrence of peanut white silk disease.

Management starts from the time of land preparation, must be intensively cultivated, the appropriate sowing depth, seed dressing must be handled well, with imidacloprid or thiamethoxam, compound difenoconazole, fludioxonil, or Weifu. Weeds will also increase the humidity in the field, causing a large area to spread, be sure to close before the seedlings and weed after the seedlings to clean the weeds. The peanut clump period and before the ridge sealing, these two times are very important, after the ridge is sealed, it is difficult for the agent to touch the roots.

Spray 2 times with thiofuramide plus foliar fertilizer spray. When controlling the wang, add flusilazole to a spray before harvest. At present, thiofuramide and flusilazole have the best effect on white silk disease.

Be sure to kill in the bud, once the onset occurs, it is difficult to control. Irrigation roots, spraying, for ordinary fields, basically can not be realized, the workload is too large, that is, the later stage, but also to increase the amount of medicine and water, try to spray the medicine to the roots, the minimum 2 buckets of water or more. If conditions permit, organic fertilizer or biological fertilizer can be added when arriving land, and compound fertilizer can be used.

Spring peanuts are combined with weeding before land preparation, and thiofuramide is added. Kill once in advance. As long as the management is strengthened, there is generally not much loss.

The insect infestation must be well controlled, combined with the first and second times of the three times of the drug, and the killing is at a young age.

White silk disease is a high incidence of peanuts in summer, in order to avoid reducing yield, these two methods should be known as early as possible!

Peanut white silk disease can be treated with thiofuramide**. The use of thiofuramide this agent to carry out the whole field spray, generally one acre of land with 3 buckets of water, focusing on spraying the base of the peanut stem, spraying 2-3 times, every 7-10 days once, but also how to know that the tour will have a very good and control effect.

Symptoms of peanut white silk diseasePeanut white silk disease usually occurs in the rhizome or at the base of the stem. The cortex of the susceptible rhizome gradually turns brown and necrotic, and the cortex decays severely. After the rhizome is damaged, the absorption of water and nutrients is blocked, resulting in poor growth, the aboveground leaves become smaller and yellow, the branch internodes are shortened, and the branches and leaves wither in severe cases.

Under wet conditions, white silky mycelium appeared on the surface of the affected rhizome or near the ground.

Peanut white silk disease is prevented and controlled with oxystrobin mixed with tebuconazole.

Peanut white silk disease can be prevented and controlled with 50% iprodione, 50% Pythium 1000 times, 40% sclerotinia 600 times, 50% carbendazim 800 times, or tebuconazole, difenoconazole and other agents alternately sprayed to prevent and control. It can also be used to irrigate the roots with 70 thiophanate-methyl 800 times solution at the pod-setting stage of peanut, and the control effect is very obvious.

When peanuts are infected with white silk disease, it is not easy to treat, so generally after the peanut harvest, the diseased plants are cleared out of the farmland, and the soil is deeply turned for disinfection, so as to completely eliminate the overwintering germs. Before planting peanuts in the second year, the peanut seeds are disinfected to eliminate the germs carried on the peanut seeds. High soil moisture can promote the occurrence of white silk disease, and the stagnant water in the field should be drained in time in the rainy season.

Spray pesticides in time before the development of peanut pods to prevent the occurrence of white silk disease. Once the diseased plants of white silk disease are found in the field, the diseased plants should be removed from the farmland and sprinkled with quicklime for disinfection to prevent the spread of the disease. It is important to clean up the countryside and prevent it in time.

Precautions for the prevention and control of white silk disease

Some growers saw that white silk disease had occurred in the field, and then bought medicine, carried a sprayer on their backs, and just sprayed it to the end, which is not possible. After the occurrence of white silk disease, the pathogenic bacteria are mostly at the base of the stem, close to the soil, and it is difficult for the conventional spraying method to make the liquid effectively contact the pathogenic bacteria, which will seriously affect the effect.

It is recommended that growers, for the peanut field where white silk disease occurs, at least two buckets of water per acre, in addition, the nozzle should be pressed as low as possible when spraying, so that the liquid can effectively contact the base stem, and it is best to add some penetrants (silicone, vegetable oil, etc.), penetrate and beat evenly, so that the effect can be better.

In addition, for the white silk disease plants that appear in the early stage of peanuts, it is recommended that the growers pull them out directly, and then dig up the soil near the plants to solve the problem from the source, and then cooperate with the spray to effectively control the spread of white silk disease.

Peanut white silk disease is a pest, symptoms and causes of disease, as well as prevention and control measures.

The fungus is produced in the root system or soil of the plant, causing root rot and death. Realize soil fallow, and even soil rotation, ensure that the soil is not compacted, and strengthen prevention and control in the rainy season.

The main reason is that it has formed a special soil virus in the whole cultivation process, so if you want to prevent it well, you should spray pesticides to achieve a very good prevention and control effect.

The pathogen overwinters in the soil or on diseased residues in the form of sclerotia or hyphae, and is mostly distributed in the topsoil layer of 3 cm to 7 cm. Sclerotia can survive for 5 to 6 years in soil, especially in drier soils. Germs can also be mixed into compost for overwintering, and pods and seeds can also carry the bacteria.

Disease-resistant varieties were selected according to local conditions, and the resistance differences between peanut varieties were obvious, so disease-resistant varieties could be planted according to local conditions. Peanut white silk disease is a typical soil-borne disease, the fungus survives in the soil for a long time, and the field can be rotated with gramineous crops for 3 years and 5 years, which can greatly reduce the disease in the field. It is reported that the appropriate postponement of the sowing date of peanuts for 5 days and 7 days can significantly reduce the occurrence of white silk disease.

The occurrence of white silk disease is usually related to variety, soil and heavy cropping, sowing date and climatic conditions. Generally, the pod shell is thinner than the shell thicker varieties, the plant erect type is more diseased than the creeping variety, the soil is heavy clay, the permeability is poor, the low-lying waterlogged field is seriously diseased, the field is used without rotting organic fertilizer, or there is no completely rotten organic fertilizer or farmhouse fertilizer is also usually prone to disease, avoid heavy stubble planting, it is best to carry out water and drought rotation is the best, and the field plant medicine is cleaned up during harvest, which can greatly reduce the field pathogens.

Prevention and control methods.

1. After harvesting, remove the sick and disabled body in time and turn it deeply. It is rotated with gramineous crops such as rice, wheat, and corn for more than 3 years.

2. Advocate the application of compost or decomposed organic fertilizer made of enzyme bacteria to improve soil permeability. Spring peanuts should be sown late, and the seedlings should be cleared and squatted at the seedling stage to improve disease resistance.

3. Select disease-free seeds and mix seeds with 50 carbendazim wettable powder with a seed weight of 0 5. After the onset of the disease, 1kg of 50 seed dressing double powder mixed with 15kg of fine dry soil was used to make medicinal soil to cover the diseased holes, and each hole used 75g of medicinal soil.

Peanut white silk disease can use iprodione, pythium, sclerotia, etcSpecial drugs for prevention and treatment.

Peanut white silk disease can be controlled with 50% iprodione, 50% Pythium 1000 times solution, 40% sclerotia net 600 times solution, 50% carbendazim 800 times solution. Or use tebuconazole, difenoconazole and other road agents to spray alternately 2 to 3 times, once every 7 to 15 days, pay attention to spray evenly and drench the feet. It can also be used to irrigate the roots with 70% thiophanate-800 times solution at the peanut podding stage, and the control effect is very obvious.

The disease mostly occurs in the flowering and plant generation stage, mainly infects the base of peanut stems, and can also damage fruit stalks and pods. The base of the stem is infected, and the lesions are dark brown corrugated at first, and then gradually concave to form a soft rot, and white silky hyphae grow on the surface of the lesions. Under high humidity conditions, the hyphae spread to cover the lower stem of the diseased plant and the surrounding soil, and formed a rapeseed-like sclerotia, which was white at first and then dark brown.

At the beginning of the disease, the leaves are withered and yellow, and in severe cases, the base of the stem is fibrous, and the whole plant dies.

Prevention of peanut white silk disease

After the peanut is harvested, the diseased residues should be completely removed from the field in time, leaving no residue to eliminate the source of overwintering bacteria. It can be rotated with gramineous crops for more than 3 years to reduce the accumulation of bacterial sources. In addition, crop rotation can renew soil nutrients, promote the absorption of nutrients by crops, enhance crop growth, and increase resistance.

Combined with spring ploughing, deep ploughing of the land, 2 kg of 70 thiophanate-methyl was used, mixed with fine soil and sprinkled in the soil to eliminate residual pathogens.

After the peanut emerges, check the seedlings in time to ensure that the whole seedlings are moderately dense; In the middle stage of growth, weeding and famine prevention are conducive to ventilation and light transmission, enhance plant disease resistance, and control the occurrence of white silk disease. During the peanut growing season, the diseased plants should be uprooted in time and the diseased residues should be burned to reduce the accumulation and spread of pathogens and control the speed and degree of the epidemic.