Tomatoes have viruses, what kind of medicine should be used to treat them?

Introduction to Tomato Virus Disease:

1.Symptom. 1) Mosaic type: the leaves are mottled or slightly wrinkled with yellow and green or dark and light shades;

2) Fern leaf type: the plant is dwarfed, the upper leaves are linear, the middle and lower leaves are slightly curled, and the corolla is enlarged into giant flowers;

3) Streak type: brown spots or cloud spots occur on leaves, or brown patches occur on stems and vines, and the discolored part is only in the epidermal tissue, not deep inside;

4) Leaf curling type: yellowing between leaf veins, leaf edge bending upward, leaflet twisting and deformity, plant atrophy or clumping;

5) Yellow top type: the top leaves are greenish or yellow, the leaves become smaller, the leaf surface is shrunken, the edges are rolled up, the plant is dwarfed, and the adventitious branches are clustered;

6) Necrotic type: part of the leaves or the whole leaf yellowing, yellow-brown necrotic spots occur, the lesions are irregular, mostly necrotic and dry from the edge, and the fruit of the diseased plant is light gray-green, with translucent light white spots. <>

Integrated control measures for tomato virus disease:

1. Breed prevention.

Most of the tomato varieties in China have poor virus resistance, and foreign varieties with strong resistance can be selected, such as Syngenta of Switzerland, Rickswang of the Netherlands, and Hazela of Israel.

2. Prevention before sowing.

Before sowing, the seeds are soaked and disinfected, and when cultivating seedlings, choose plots that have not been planted with cruciferous, cucurbitaceae, and solanaceae crops as seedbed soil, cultivate strong seedlings without diseases and pests, and carry out rotation planting for more than two years with tomato fields with severe disease and non-solanaceae crops with strong disease resistance such as green pepper and zucchini.

3. Strengthen water and fertilizer management.

Fertilization should be mainly based on decomposed organic fertilizer, supplemented by chemical fertilizer, try to increase phosphorus and potassium fertilizer, control nitrogen fertilizer, pay attention to medium and trace elements foliar spraying, especially do a good job in topdressing and watering during the fruit period; Watering can not be flooded or watered with large water, you can take a small amount of water to water frequently, a small amount of many times, which can not only keep the soil moist, but also will not make the tomato lack water. Shading can improve the physiological resistance of tomato by cultivating strong seedlings.

4. Strengthen field management.

Because whiteflies and whiteflies are the vectors of tomato virus diseases, the prevention and treatment of the two insect pests should be done in time. At the same time, it is necessary not only to avoid too late planting, but also to do a good job in field cultivation in time; In addition, in hot weather, on the one hand, it is necessary to do a good job of ventilation and cooling in the shed, and on the other hand, it is necessary to do a good job of strong light shading. <>

Lentinan mushroom polysaccharide or phytophytogen can be sprayed once every 5 7 days, sprayed 2 3 times in a row, inhibiting the reproduction of the virus, which can control the onset and prevent the spread.

Tomato virus should be prevented in advance before sowing to strengthen water and fertilizer management, if the virus is really found, it should be upgraded with anti-epidemic preparations to combine kudzu rice oil and Phelps anti-virus plus synergistic nutrition.

Tomato virus disease, prevention first, first of all, to control aphids, planthoppers, etc., to control the source of infection. Severe diseased plants can be uprooted, hydrochloric acid, riboside triazole can be used. Morpholine, bitter, calcium, sulfur compound, lentinan polysaccharide, Ningnanmycin, phytoling, etc. plus zinc sulfate plus amino acid foliar fertilizer plus imidacloprid spray.

Apply 2 to 3 sprays in a row 5 days apart.

Tomato is in the early stage of the disease, can use morpholinoguanidine hydrochloride copper wettable powder liquid for **, can also use the vast high-tech amino-oligosaccharide water solution and plant disease spirit emulsion liquid and other drugs, can reduce the symptoms of tomato, conducive to the growth of tomatoes, in addition to Ningnanmycin water solution times, azole riboside water agent times, bacterial poison water agent times, etc., can play a role in sterilization, is a commonly used fungicidal pesticide spray, should be sprayed to tomatoes every 5-7 days, and to spray 2-3 times in a row.

It should be noted that once the virus disease is found, it should be sprayed immediately (Ty virus No. 1), sprayed three times on the first day, the second day and the fifth day, and after the disease of the tomato is controlled, it will be turned to preventive work, and it is also necessary to pay attention to pruning the branches and leaves of the tomato, pay attention to the hygiene of the tomato, timely weeding, observe its recovery, and use the drug reasonably.

Be sure to choose the right chemical, pay attention to the time and concentration of use, and try not to choose a high concentration. Choose targeted chemicals and don't use pesticides indiscriminately.

Sterilization can be carried out, and fertilizer can also be replaced, and the land can be checked to see if there are any unsuitable places. Some drugs can also be used to prevent and treat it. Of course, it is also possible to remove the damaged and diseased tomatoes so that they do not spread.

The focus is on whitefly control, the yellowing of tomato leaf curl virus disease is transmitted by whitefly, so we should strengthen pruning and chemical control; Insect nets can be used to prevent pests from entering the vegetable shed, and anti-inducers can be applied to plants, so that the crops can improve their own immune and defensive responses.

According to the research, the current domestic varieties have poor resistance to tomato virus disease, while foreign varieties have strong resistance to virus pathogens, especially the resistance to tomato yellow flower leaf curl virus is more obvious, so we must strictly control and choose varieties with strong resistance when selecting planting varieties.

2.Strengthen the control of pests and diseases Because whitefly and whitefly are the main vectors of tomato virus pathogens, we must strengthen the prevention and control in the early stage in the prevention and control of whitefly, and carry out timely and effective prevention and control.

Summary. Tomato is in the early stage of the disease, can use morpholinoguanidine hydrochloride copper wettable powder liquid for **, can also use the vast high-tech amino-oligosaccharide water solution and plant disease spirit emulsion liquid and other drugs, can reduce the symptoms of tomato, conducive to the growth of tomatoes, in addition to Ningnanmycin water solution times, azole riboside water agent times, bacterial poison water agent times, etc., can play a role in sterilization, is a commonly used fungicidal pesticide spray, should be sprayed to tomatoes every 5-7 days, and to spray 2-3 times in a row.

What is the best medicine to prevent tomato virus disease.

Tomato is in the early stage of the disease, can use morpholinoguanidine hydrochloride copper wettable powder liquid for **, can also use the vast high-tech amino-oligosaccharide water solution and plant disease spirit emulsion liquid and other drugs, can reduce the symptoms of tomato, conducive to the growth of tomatoes, in addition to Ningnanmycin water solution times, azole riboside water agent times, bacterial poison water agent times, etc., can play a role in sterilization, is a commonly used fungicidal pesticide spray, should be sprayed to tomatoes every 5-7 days, and to spray 2-3 times in a row.

Hello, I hope it helps.

How did this virus come about?

And then there's the question of whether it's contagious.

Hello, this virus is brought by the tomato itself, more or less.

If it is not timely, there will be no dead seedlings.

Hello, it will.

1. Tomato bacterial spot disease (also known as bacterial leaf spot disease) and canker disease** program.

Plan 1: cut 50ml finely, mix with 15 kg of water, take the medicine once every 3-5 days, and use it 2-3 times;

Plan 2: 30-50ml + 40ml of Jinbei, mixed with 15 kg of water, once every 3-5 days, 2-3 times;

Scheme 3: 30-50ml + 30-50ml of quick net, mixed with 15 kg of water, once every 3-5 days, 2-3 times in a row;

Scheme 4: Finely cut 30-50ml + chemical agents with the same performance, such as 30g of 20% thiohedone, mixed with 15 kg of water, and used once in about 5 days, 2-3 times.

2. Tomato blight ** program.

Plan 1: 50ml of frost bell, mixed with 15 kg of water, once every 3-5 days, 2-3 times;

Plan 2: 30-50ml of frost bell + 40ml of golden shell, mixed with 15 kg of water, once in 3-5 days, 2-3 times;

Plan 3: Frost Bell 30-50ml + fine cut 30-50ml, mixed with 15 kg of water, once every 3-5 days, 2-3 times;

Plan 4: Frost Bell 30-50ml + an appropriate amount of chemicals with the same performance, such as 68% nail cream * manganese zinc 30g or 72% cream urea * manganese zinc 25-30g, etc., mixed with 15 kg of water, once in about 5 days, 2-3 times.

Precautions for eubacterial disease control:

To enhance its permeability, penetrants such as silicones are added.

The choice of regimen and the interval between medications are flexibly grasped according to the severity and development trend of the disease.

The purpose of the above scheme is to enhance the efficacy of the drug; the second is to supplement crop nutrition and provide plant disease resistance;

The main purpose of the above scheme to compound the company's other performance fungicides is to enhance the efficacy; 2. Prevention and prevention of mixed diseases during this period;

When seriously ill, in order to prevent and treat diseases faster and more effectively, the company recommends adopting the method of combining traditional Chinese medicine and Western medicine for compounding, so as to achieve the stable effect of traditional Chinese medicine, no drug resistance, and the good effect of Western medicine with rapid effect. (Note: When mixed with other chemicals, be sure to add the company's products first, dilute them as the mother liquor, stir and mix well, and then add other agents.)

If there is turbidity or precipitation during the preparation process, please stop using).

3. Tomato virus disease control program.

Plan 1: 40g of TY virus No. 1 (40g of winter and spring stubble, 60g of summer and autumn stubble), 15 kg of water, 2 days, 7 days and 1 course of treatment, 2-3 courses of treatment, after the disease is controlled, switch to a prevention program.

Plan 2: Ty virus No. 1 40g + Cuijie 20g, mixed with 15 kg of water, used for 2 days, 7 days for 1 course of treatment, 2-3 courses of treatment, after the condition is controlled, change to a prevention program. (This scheme is used for plants with a height of more than 30 cm).

Remarks: In order to enhance the permeability of the agent, penetrants such as silicone, milk, etc. can be added at the same time.

When dissolving Ty virus No. 1, the amount of water should be more than 10 catties of water.

Symptoms: The field symptoms of tomato virus disease are very complex, and the main manifestations are four types: mosaic leaf type, fern leaf type, stripe leaf type and yellowing curl leaf.

Control methods: To control the occurrence and epidemic of tomato virus disease, we should pay equal attention to disease-resistant varieties and agronomic control, and combine comprehensive control measures with pesticide control: choose disease-resistant varieties.

Seed treatment. Before sowing, the seeds should be soaked in water for 3 4 hours, and then soaked in 10% trisodium phosphate aqueous solution for 40 to 50 minutes. Do a good job of cultivation and disease prevention measures before and after planting.

On the basis of heavy application of base fertilizer, phosphorus and potassium fertilizer, spraying Aiduo 6000 times liquid to enhance disease resistance. Shoot the branches late and prevent aphids early. Pharmaceutical prevention and control.

At the beginning of the disease, 800 times of plant disease emulsion or 500 times of 20% virus A wettable powder were sprayed. The shed with a severe disease was sprayed with 1000 times the liquid medical potassium permanganate, and the effect was better, and it was sprayed again every 5 7 days. When the sporadic occurrence of whitefly begins, alternately spray with 25% chloride wettable powder 1000 1500 times, or 25% thiamethoxam water dispersible granules 2000 3000 times liquid spray; Or smoke 200 grams of 22% dichlorvos smoke agent per mu in the protected area.

There are only a few common ones, which can be completely cured, and spraying about three times with biopesticide 30 suspension can be done.

Tomato virus with drugs like copper sulfate or oligosaccharides.

Tomato virus disease, there are a variety of symptoms in the field. Mosaic type, striped type, leaf curl type, etc. The mosaic leaves appear yellow-green alternating or dark mottled on the leaves, the veins are transparent, the leaves are slightly shrunken, and the diseased plants are shorter.

The dorsal veins of the fern leaf type are purple, and the leaves are curled upward, thickening, and hardening. The leaf veins are yellowed, the leaf edge is curved upward, and the middle leaf is spherical and twisted into a spiral deformity. The parietal leaves of the yellow-topped diseased plants are greenish and yellow, the leaves become smaller, the leaf surface is wrinkled, the middle part is slightly protruding, the edges are mostly rolled down or upward, the diseased plants are dwarfed, and the adventitious branches are clustered. ‍‍

Just spray it a few times with a biopesticide suspension.

Hanting Wang Youfu diseased tomatoes.

Viral diseases, mainly rely on prevention, first of all, we should pay attention to the use of oysters or thiamethoxam to treat vector pests such as whiteflies, aphids, etc., strengthen fertilizer and water management is conducive to resisting the virus, find a small number of strains to be removed in time to avoid infection, recommended formula fluorophos 1200 times + 5% amino-oligosaccharides 600 times + 3% acetamide 1200 times + foliar fertilizer or 5% octymonia acetate 800 times + 5% amino-oligosaccharides 600 + 75% imidacloprid 3000 times + foliar fertilizer spraying alternately, once every 7 days, Appropriate addition of zinc sulfate and foliar fertilizer can increase the effect.