Potato bacterial wilt is the main disease, what medicine should be used for potato bacterial wilt?

Tianda 2116, 72% can be used with streptomycin sulfate wettable powder 4000 times liquid, agricultural resistance 401 500 shell liquid, 25% copper ammonia water 500 times liquid, 50%, chlorothalon wettable powder 400 times liquid, 77% doning wettable powder 800 times liquid and so on. These medicines are very effective.

It can be treated with Bacillus subtilis, which is quite good and specifically targets this disease.

At this time, it is necessary to choose the right drug according to different situations, generally the more common is quicklime, and then it also includes antagonistic bacteria MA-7, and sometimes chlorothalonil can also be selected.

Potato bacterial wilt is the main disease, what medicine should be used for potato bacterial wilt?

Hello Xiang people, potato bacterial wilt control agents, commonly used agents are: 50% sterilization 700 times liquid, or backing mountain (containing 56% cuprous oxide) 800 times liquid, or can kill 1000 times liquid, or 20% lime water. Prevention and control methods:

Root irrigation, irrigation every 7 days, irrigation 2-3 times, each plant with a kilogram of liquid medicine, has a good disease prevention effect. Potato bacterial wilt can be controlled with Zhongshengmycin, which can kill 3000 and other agents. Prevention and control of bacterial wilt, verticillium wilt, and heavy crop disease, improve soil, improve crop immunity, enhance soil fertility, activate soil, promote crop pre-production feast, increase crop yield, and promote crop health.

There are still a lot of harms, so what can be seen directly is that there will be a very serious wilting of the finch and the roots will droop, and his stems and leaves will also appear yellow, and the potato flesh and limb cortex will also be separated, and there will be a lot of black-brown spots on the surface, so there is no way for Lihezi to survive.

There is a great harm, first of all, it will lead to a reduction in potato yield, and it is also likely to cause the size of the potato to be very small, and at the same time, there will be yellowing of the leaves, and it will also lead to the growth and development of the potato is hindered by the lead of the manuscript, and the growth rate is very slow.

The diseased plant is slightly shortened, the leaves are light green or pale green, the lower leaves first wilt and then the whole plant droops, and begins to recover in the morning and evening, and finally the whole stem and leaves of the whole plant wilt and die, and when the disease is serious, the outer skin is cracked, and the medullary is ulcerated like mud, which is different from blight. Therefore, when encountering this kind of disease, we must be sensitive to the prevention and control of the fire.

The foliage will become very wilted, and the yield will be very low, and there will be some details, and there will be some black spots, and it will also be very dry, and so on, these are the hazards of potato bacterial wilt.

What are your tips for the prevention and control of potato wilt?

Infection of potato bacterial wilt** includes diseased seed potatoes, soil, other host plants and fertilizers. It spreads in many ways, such as knives used for cutting seed potatoes, agricultural machinery and packaging used in the process of cultivating, harvesting, transportation and cellar storage, etc., all of which may be contaminated with germs and play a role in infection.

Potato bacterial wilt is a vascular disease of bacterial infection, which can form a long-term source of infection after the pathogen enters the soil with the remains of the diseased plant, and can cause impregnation to potato seedlings and adult plants.

After the main stem is diseased, the diseased plant is slightly dwarfed, the leaves are pale green or pale green, the lower leaves first wither and then the whole plant relaxes, the early stage of the disease, the evening program recovers, and after 4 or 5 days, all the leaves and stems of the main stem will wither and die. When the germs invade, they invade the stem of the potato along the vascular bundle, and the first to invade withers first, and finally the whole plant dies. After transsection, the vascular bundle is dark brown, and when the ambient humidity is relatively large, there is a spillage of pathogenic fluid in the cross-section.

When the fungus invades the tuber, it invades the tuber from the axillary bud, so the navel organ begins to have tan degeneration, and the cut tuber can be seen to the vascular bundle to become dark brown, and the affected part of the tuber is squeezed by hand in the middle and late stages of the disease, and there is white pus overflowing, but the potato flesh and the epidermal layer will not be separated, which is also the main difference from potato ring rot. Diseased tubers, bud eyes are the first to occur, causing the potatoes to not sprout, and then all the tubers rot.

R. wilt can survive in soil for more than 14 months or even years. The regulations on temperature and environmental humidity are harsh for bacterial wilt, and high temperature and humidity are the prerequisites for the onset of the disease. The pathogen can occur in 10 40, but it is more suitable to 30 37 temperature, when the soil moisture reaches 30%, it has formed the ideal conditions for the onset of bacterial wilt, and the soil moisture in the potato planting area of more than a few horses in China has exceeded this norm for most of the time, therefore, precipitation concentration, strong light, and high air humidity are the natural factors of the disease.

In addition, acidic soils can also exacerbate the development of diseases.

The transmission of potato bacterial wilt is mainly based on faulty tubers, parasitic plants and soil, but seed potato transmission is the main cause, especially in the latent state of diseased potatoes, which do not show all diseases under low temperature conditions; Diseased tubers can be infected with healthy tubers according to the cutting knife of the slice. In the whole process of the growth and development of the main stem, the rhizomes of the planted diseased potatoes can touch each other, which can also cause feelings. The pathogens in the soil in the whole process of cultivating the soil, watering and hoeing can be transmitted according to the water flow, the agricultural machinery and tools that are polluted by the environment and the pathogens adhered to the shoes of people; Failure of the weed belt can also infect potatoes and other diseases.

Potato bacterial wilt - route of transmission and incidence criteria

The pathogenic bacteria spend the winter in the soil environment with the disabled institution, and the bacteria that invade the tubers spend the winter in the cellar, and can saprope in the soil for 14 months to 6 years without a host. The pathogen spreads according to farmland irrigation or precipitation, invades from the stem tip or root wound, and can also enter the adjacent parenchyma cells through the hose, causing irregular water-soaked spots on the stem. Bacterial wilt is a typical vascular pest and disease, in which pathogenic bacteria invade vascular bundles and multiply rapidly and block hoses, preventing water transport and wilting.

The bacterium can grow at 10-40, suitable for 30-7, integrated into PH6-8, suitable, generally acidic soil disease is heavy. The soil moisture in the field is high, and the temperature rises sharply after even rain or heavy rain, and the disease is serious.

Potato wilt - ways to prevent it

Promote the rotation of crops with the cruciferous family or sedge family for about 4 years, and carry out the rotation of water and drought with the sedge family. Species resistant to bacterial wilt are used. Choose seedlings without disease, and choose high furrow planting to prevent flood irrigation.

After the diseased plant, sprinkle quicklime for disinfection. Improve the cultivation management method, choose the secret recipe fertilization technology, spray 7500 times of the solution of Zhibao or 6000 times of the liquid of Aiduo, and use sufficient organic fertilizer or grass ash to change the microbial strain system. You can also apply 100-50kg of lime powder per 667m2 to adjust the soil pH value.

For drug prophylaxis, MA-7 and NOE-104 were used for bacterial wilt antagonism in Nanjing agriculture, and the seedlings were soaked in roots during transplanting; It can also be used in the early stage of the disease with streptomycin sulfate or 72 agricultural machinery streptomycin sulfate soluble granules 4000 times or agricultural anti "401" 500 times liquid, 25 copper ammonia liquid 500 times liquid, 77 wettable granules 400-500 times liquid, 50 chlorothalonil wettable powder 400 times liquid, 12 green milk copper emulsifiable concentrate 600 times liquid, 47 Garinong wettable powder 700 times liquid irrigation, each tree irrigation of good potion, 1 time every 10 days, continue to irrigate 2-3 times.

What chemical fertilizers are used to prevent potato bacterial wilt?

Potato bacterial wilt disease plant is slightly shortened, the leaves are pale green or pale green, the lower leaves first wilt and then the whole plant relaxes, gradually repaired sooner or later, and after 4-5 days, all the leaves and stems of the whole plant wilt and die. MA-7 and NOE-104 were used to antagonize bacterial wilt from Nanjing agriculture, and the seedlings were soaked in roots during planting. It can also be used in the early stage of the disease with streptomycin sulfate or 72 agricultural streptomycin sulfate soluble powder 4000 times or agricultural anti "401" 500 times liquid, 25 copper ammonia water 500 times liquid, 77 killable wettable powder 400-500 times liquid, 50 chlorothalonil wettable powder 400 times liquid, 12 green milk copper emulsifiable concentrate 600 times liquid, 47 Garinong wettable powder 700 times liquid irrigation, each plant irrigation of good solution, 1 time every 10 days, continuous irrigation 2-3 times.

The first can choose 502 such a drug, the effect is very good and distinctive, the second point can choose Budweiser, such a medicine is also very good, but pay attention to the amount, the third point, potatoes should choose a professional fertilizer, so that it can have an effect?

You can choose wettable powder, streptomycin sulfate, chlorothalonil, green milk copper emulsifiable concentrate, or copper ammonia aqueous agent.

At this time, you can choose some drugs with relatively high efficacy, and you must pay attention to the concentration of this drug, you must pay attention to the use of this drug, do not mix many pesticides together, and you also need to prescribe the right medicine, at this time you can choose the cruciferous family to operate in turn.

There are four types of diseases that affect potatoes: bacterial, fungal, viral and physiological. One of the most common diseases is fungal diseases, and they are worldwide, which does not mean that only potatoes occur in China, almost all potato growing areas in the world.

From the perspective of the incidence of potato planting areas in China, the most serious, most common and most common fungal diseases mainly include late blight, bacterial wilt and bacterial ring rot.

At the same time, the deterioration of potato varieties caused by viral diseases is also very serious, which is a major obstacle to the further development of the potato industry. In addition to bacterial, fungal and viral diseases, there are also some non-modal-containing pathogenic physiological diseases, such as element deficiency diseases, low temperature cold injury, high temperature heat injury, hypoxia, chemical injury, non-viral leaf curling disease, etc. Sometimes they are no less harmful and detrimental than those caused by bacterial, fungal, and viral diseases.

Potatoes have high nutritional value and are also very versatile, such as being a staple food or a vegetable, especially vinegar-braised potatoes and shredded potatoes are really delicious, most of them are used as feed for livestock and poultry. Potatoes have a long history of cultivation in China. However, in the process of planting, it is always harmed by pests and diseases, which seriously affects the yield and quality.

One such disease is bacterial wilt, which has a significant impact on potato production. Therefore, in potato planting, we must pay attention to understanding these diseases and actively do a good job in prevention and control, so as not to affect the yield and quality of potatoes and cause losses. The most obvious manifestation is that the leaves of the entire field will dry up, the fruits will become shorter, and even the roots will rot.

In general, there are no symptoms at the onset of the disease, but after ten days, the leaves will wilt in large quantities.

The leaves are still green in the early stage, which is called bacterial wilt. The stalks of diseased plants are thick and rough, and black lines will appear after cutting. Soak it in a glass and you can see the white viscous liquid on the stem.

At this time, the vascular bundles of the potatoes will turn black, and the meat will not fall off, but the potatoes will rot like mud and have no market value.

It is necessary to do a good job in water and fertilizer management, scientific fertilization, reasonable watering, to ensure that sufficient light is obtained, and drugs can also be sprayed to prevent and control.

First of all, it is necessary to implement crop rotation in a planned way, and then Zhengqinghong adopts the method of raising seedlings such as fertilizer and nutrient bowls, and then optimizes the cultivation method, and at the same time improves the soil, so that it can be controlled.

Potato bacterial wilt is a destructive vine blight disease caused by the fungus R. solanacear, which can damage thousands of green plants, including potatoes, among which Solanaceae crops are more serious. The bacterial wilt disease caused by it is known as the "cancerous disease" of green plants, and it is the most widespread, most serious and difficult bacterial infection in the world.

Statistics show that the loss of potato yield due to bacterial wilt in Viet Nam can range from 15 to 20 percent in Song and 24 to 83 percent in India. Similarly, bacterial wilt is a key disease in the potato planting areas of Yunnan, Fujian and other southern regions of China, and the damage to the rapid yield of severe disease can exceed 80%, and even the output of which ear is extinct.

Generally, the onset of the disease occurs in mid-June, and the peak incidence is reached in early July, and it will not be completed until the beginning to mid-August. Today's township will take you to grasp potato bacterial wilt in detail, and according to its pathogenesis and main manifestations, causes and regularity of disease, several efficient prevention and control methods are introduced in detail. Although the disease is difficult to manipulate and cure, farmers only need to take preventive measures in place, or can effectively prevent the damage of bacterial wilt to potatoes, and ensure potato yields and farmers' labor income.

Strengthen breeding, disinfection and sterilization. In the whole process of breeding, it is proposed to choose mobile new soil planting, which can effectively remove the beneficial bacteria that are likely to appear in the germination stage of potatoes in the wild and in a balanced manner. In the whole process of transplanting, do a good job in sterilization and disinfection

Before planting, 77% can be killed 500 times liquid irrigation roots or 3000-4000 times of streptomycin sulfate with agricultural machinery to soak roots for 1-2 hours. After transplanting, in the early stage of bacterial wilt, the method of leaf spraying or irrigation of roots was used to top fertilize the green plant seedlings of Aiyikang 150 times.

Adjust the quality of the land. Methods that can be used to adjust the quality of the land to generate environmental factors that are conducive to pathogen removal. Here's how:

At the pH level, the pH characteristics of the soil layer are integrated, and the appropriate quicklime powder and grass ash are used as the pH adjustment method to reasonably improve the resistance of the main stem, and create the environmental advantages of the soil layer flora, so as to reduce the total yield of bacterial wilt bacteria that may appear in the soil layer.

Efficient use of chemical fertilizers. Apply plantar fertilizer, top application of phosphorus and potassium fertilizer, and effective water injection. When planting, 25kg of phosphorus fertilizer can be applied deep or hole applied in 1 acre, and it is important not to apply soil cake fertilizer that is very likely to have a lot of bacteria without fertilizer, and apply organic chemical vitality fertilizer and biological fertilizer as much as possible to reduce the amount of fertilizer used.

Within 15-20 days after germination, 2000kg of organic fertilizer or 2000kg of grass ash should be applied to 1 mu of manure, which has a good practical effect of preventing diseases and high yield.