What to do with dead tomatoes? How to prevent it

1. What medicine is used for dead tomatoes?

2. Dead tomatoes.

3. What to do with tomato dead leaves.

4. What medicine is used for tomato rotten roots and dead seedlings.

1.The problem of dead tomatoes can be used to irrigate the roots with traditional chemical pesticides, which can directly kill the pathogenic bacteria in the soil, with fast onset of effect, less affected by other factors, and relatively stable efficacy, but chemical pesticides are not good at preventing and controlling root diseases such as wilt and bacterial wilt from the fine roots of the hair.

2.It can also be used with biological fungi to irrigate roots or flush application, which has a slow onset of effect, but has a long duration of effect, which is easy to cause the efficacy to decline or even fail, and the stability and slowness are poor.

Summary. 1. Physiological atrophy.

1) Drought and water shortage. Because after the tomato is planted, in order to promote the root system and prevent the flower and fruit drop induced by the vigorous growth or long growth of the plant, most vegetable farmers should properly control the water or wait for the first ear of fruit such as the size of the egg ring before watering, especially in the case of arid plots or sandy soils, which will cause tomatoes to wilt due to lack of soil water. However, watering can alleviate the wilting of the tomatoes.

There is also a drought situation, that is, because the tomatoes have not been watered after planting, and when they can be watered, the root system is in a state of high humidity for a long time, and the root system is suffocated and hypoxic, or because the water temperature is low and the ground temperature is high when watering, the capillary roots are injured, the water absorption is insufficient, and the tomatoes will wilt.

What to do if the tomato seedlings die.

What's the weather like lately.

1. Physiological atrophy (1) Drought and water shortage. Because after the tomato is planted, in order to promote the root system and prevent the flower and fruit drop induced by the vigorous growth or long growth of the plant, most vegetable farmers should properly control the water or wait for the first ear of fruit such as the size of the egg ring before watering, especially in the case of arid plots or sandy soils, which will cause tomatoes to wilt due to lack of soil water. However, watering can alleviate the wilting of the tomatoes.

There is also a drought situation, that is, because the tomatoes have not been watered after planting, and when they can be watered, the root system is in a state of high humidity for a long time, and the root system is suffocated and hypoxic, or because the water temperature is low and the ground temperature is high when watering, the capillary roots are injured, the water absorption is insufficient, and the tomatoes will wilt.

The first thing you have to do is find out what causes the tomatoes to die.

Prevention and control methods: spray amino acid foliar fertilizer according to weather conditions (such as Jia 100 spray fertilizer), supplement photosynthetic nutrition, improve chlorophyll, reduce harm, and appropriately cover the quilt according to the situation after the continuous rainy soil turns clear, reduce transpiration, and avoid heavy wilting.

The phenomenon of dead tomatoes in greenhouses, how to prevent and control them.

The problem of dead tomatoes can be irrigated with traditional chemical pesticides, which can directly kill pathogenic bacteria in the soil, with fast onset and less affected by other factors, and the efficacy is stable, but chemical pesticides are not good at preventing and controlling root diseases such as wilt and bacterial wilt from capillary roots. It can also be used to irrigate the roots or flush the application of the concealed biological fung, which has a slow onset of effect, but has a long duration of effect, which is easy to cause the efficacy to decline or even fail, and the stability is poor.

The best way to wilt tomato seedlings is:

1. The soil temperature is too low.

If the soil temperature is lower than 9-11 for a long time, the water absorption capacity of the tomato root system will be reduced, and the plant moisture will be out of balance, which will be manifested in the wilting of the stems and leaves of the plant, and find a way to stabilize the ground temperature above 10, and the tomatoes with wilted stems and leaves can be improved.

Second, the root system is damaged.

The stems and leaves of tomatoes wilt, followed by root damage, the root system of the plant has problems, its absorption capacity will decrease, the ability to absorb water becomes worse, for tomatoes with damaged roots, you can dig the plant out of the soil, cut off the rotten and shriveled roots, and re-pot the soil after a little rooting.

3. Air drying.

The wilting of the stems and leaves of tomatoes may also be caused by dry air, such as continuous rainy days after sudden sunshine, or when the wind is too rapid during the high temperature period, the air will become very dry, the leaves of tomatoes lose water too quickly, and the water absorption capacity of the root system can not meet the transpiration and water loss of the leaves, which will lead to wilting of the plants, and the air humidity of the maintenance environment can be improved.

Fourth, excessive fertilization.

The stems and leaves of tomatoes wilt, and finally it may be caused by excessive fertilization, such as a large amount of chemical fertilizer, resulting in the salinization of the soil for planting tomatoes, resulting in too low water potential around the roots of the plant, which affects the water absorption of the root system of the plant.

Tomato seedlings can be treated with drugs.

When planting tomatoes, you can also use the method of pesticide control, it is recommended that growers start to irrigate roots to protect at the beginning of the disease of sporadic diseased plants, once every 7 10 days, 3 4 times in a row. The agent can be selected with 600 times of 75% fierce killing dry suspension solution, or 50% carbendazim wettable powder 500 times, or 70% Verdajiatrop wettable powder 500 times, or 10% double-effect spirit water solution 200 times, and about 250 ml of perfusion solution per plant.

In addition, it is also recommended that growers a little, on the other hand, insist on using thin water and light watering during the fruit expansion period, a small amount of many times, when watering tomatoes, remember to water too much or too much at one time, the advantage of this is that it can prevent germs, and carry out secondary transmission in the soil of the tomato field through watering.

Tomato wilt causes

In the process of growing tomatoes, if farmers look closely, they will find that sometimes only one side of the tomato plant is sick, while the stem and leaf growth on the other side is intact and normal. The base of the stem is water-soaked near the ground, and when there is high humidity, it will produce old skin and pink, white, or some blue-green mold. For example, the soil is heavy and acidic, which is most likely to cause the soil to contain certain germs, which can also lead to tomato wilt.

In other words, because there are some pests such as nematodes in the soil where tomatoes are grown, these pests are then transmitted to tomato plants for secondary transmission. It may be due to the fact that the tomato has some germs in its nutrient soil or organic fertilizer, which is not fully rotted when planting, which will also lead to this situation, and the servant is almost when fertilizing the tomato, the nitrogen fertilizer is too much, and if the weather is bad, it will also make the tomato susceptible to similar diseases.

Treatment of wilt disease of tomato seedlings

1. The soil temperature is too low.

If the soil temperature is lower than 9-11 for a long time, the water absorption capacity of the tomato root system will be reduced, and the plant moisture will be out of balance, which will be manifested in the wilting of the stems and leaves of the plant, and find a way to stabilize the ground temperature above 10, and the tomatoes with wilted stems and leaves can be improved.

Second, the root system is damaged.

The stems and leaves of tomatoes wilt, followed by root damage, the root system of the plant has problems, its absorption capacity will decrease, the ability to absorb water becomes worse, for tomatoes with damaged roots, you can dig the plant out of the soil, cut off the rotten and shriveled roots, and re-pot the soil after a little rooting.

3. Air drying.

The wilting of the stems and leaves of tomatoes may also be caused by dry air, such as continuous rainy days after sudden sunshine, or when the wind is too rapid during the high temperature period, the air will become very dry, the leaves of tomatoes lose water too quickly, and the water absorption capacity of the root system can not meet the transpiration and water loss of the leaves, which will lead to wilting of the plants, and the air humidity of the maintenance environment can be improved.

Fourth, excessive fertilization.

The stems and leaves of tomatoes wilt, and finally it may be caused by excessive fertilization, such as a large amount of chemical fertilizer, resulting in the salinization of the soil for planting tomatoes, resulting in too low water potential around the roots of the plant, which affects the water absorption of the root system of the plant.

Symptoms: It mainly harms the rhizomes of tomatoes, and most of them begin to develop during the flowering and fruiting period. At the beginning of the disease, only the lower leaves of the plant turn yellow, and then the brown water chestnut wilts dry up, but do not fall off.

prevention and control technologies; 1.Remove weeds in and around the field, concentrate on burning or managing; Deep ploughing of the ground to eliminate stubble, promote the decomposition of diseased residues, and reduce the source of disease and insects.

2.Sterile substrate should be selected for the nutrition of seedlings*.

3.Crop rotation and non-crop rotation.

4.Choose disease-resistant varieties, choose disease-free, coated seeds, 5Seedlings are transplanted, covered with drugs after sowing, and insecticides are sprayed once before transplanting.

6.Choose fields with convenient drainage and irrigation, open drainage ditches, and lower the groundwater level to achieve no water accumulation when the rain stops; After heavy rain, it is an important measure to clean the ditch system in time to prevent moisture retention and reduce the humidity in the field.

7.In the fields with many soil pathogens or serious underground pests, it is necessary to carry out high-temperature stuffy sheds to disinfect the soil and space.

8.The application of well-rotted organic fertilizer or finished organic fertilizer, without bacterial fertilizer, the applied organic fertilizer shall not contain the disease residues of undergraduate crops.

9.Appropriate application of phosphorus and potassium fertilizers, strengthening field management, cultivating strong seedlings, and enhancing plant disease resistance are conducive to reducing diseases.

10.Timely control of pests, reduce plant wounds, and reduce the transmission route of germs.

12.For tomatoes cultivated in greenhouses, the greenhouses are closed in summer when the temperature is high and humidity, and the tuyere is blocked for two weeks, and the high temperature is stuffy to kill most of the pathogenic bacteria.

13.Pharmacological prevention.

Root rot, bacterial myeloid necrosis and gray mold are more common in causing tomato death, and the following are the solutions to the symptoms:

After the tomato is infected with root rot, the plant first appears wilting symptoms, the performance is serious at noon, and it can be recovered in the morning and evening. After the onset of the disease, 722 grams of Pulik 10 ml of downy mildew hydrochloric acid water solution, 35 grams of Jinlei 68% refined nail cream and manganese zinc water dispersible granules and 2 ml of Fuxing 40% flusilazole emulsifiable concentrate can be added to each 15 kg of water for root control. For diseased plants, the tomato stalks that have been removed can also be poured over the soil to promote the production of adventitious roots on the stems, ensure the nutrition of the upper part of the plant, reduce the harm caused by root rot, and promote the growth of plants.

In addition, before planting, biological fertilizers such as "Radical Antibacterial 968 Strong Seedlings Do Not Die" were applied to the holes, and beneficial biological bacteria were used to inhibit the growth and reproduction of harmful bacteria, which could reduce the occurrence of root rot. When the tomato has bacterial pith necrosis, the lower leaves of the plant will wilt, and many adventitious roots can be seen at the diseased site, and the inside of the stem can be split to see the inside of the stem turning brown, and gradually develop along the stem up and down, and in severe cases, cavities appear inside the stem, which eventually leads to the death of the plant. In the prevention and treatment of the disease, systemic antibiotics can be used, such as 1000 times of 3% Zhongshengmycin wettable powder or 2000 times of 40% agricultural streptomycin sulfate soluble powder.

For plants with serious disease, 500 times of DT30% copper wettable powder can be used to inject the upper part of the diseased site for prevention and control. The reason why gray mold can cause tomato dead trees is that the diseased leaves, old leaves, residual flowers, etc. are not removed in time, and the gray mold pathogens are easy to infect these dead leaves, and these bacterial dead leaves will cause the stems to rot and appear dead after falling on the stalks. The diseased part, yellow leaves, residual flowers, etc. on the plant should be thinned out in time to prevent it from falling on the stem, so as to effectively avoid the infection of the plant, you can dilute the sclerotia into a paste with water and then smear the diseased part, and scrape the mold layer of the diseased part with a knife before applying, and then apply the drug to ensure the control effect.

It can be used: spring soil 168 - rejuvenate diseased soil, prevent dead trees, high resistance to heavy stubble, and the effect is very good. Exclusive Formula, Unique Effects, PICC Quality Coverage!

Can dead tomato seedlings be injected with medical green toxin.

It is understood that there are two main reasons for the death of tomatoes: one is root disease; The second is soil salinity. You see what kind of home you belong to.

Hollowing inside the tomato stem is not a major problem, you have to see if you are infected with the disease. Diseases that may cause wilting are bacterial wilt, wilt and stem rot.

In the process of tomato planting, it is necessary to pay attention to scientific DAO management, use less large element fertilizer, and use more microbiological biological fertilizer Ao Nongle, organic fertilizer, and rotted farm fertilizer. Pay attention to water management when there are dead trees, do not store stagnant water, spray leaves or irrigate roots with wilt rick and garlic oil to alleviate the occurrence of dead trees, and at the same time can supplement nutrients to tomatoes and improve resistance.