What are the causes and control methods of finding vegetable curls in vegetable gardens?

The reasons may be relatively high temperatures, very dry weather, lack of water in vegetables, poor ventilation, pesticide damage, excessive fertilization; The methods of prevention and control include more ventilation in the greenhouse, lower the temperature, watering the vegetables, using some drugs, strengthening the photosynthesis of vegetables, and applying less fertilizer.

It may be caused by the temperature being too dry and lacking water, if it is due to lack of water, then it is necessary to replenish his water in time. It may also be caused by improper ventilation, so be sure to let him ventilate at this time. It may also be caused by pesticide damage, so reduce the spraying of the drug and use some Arcadian seaweed fertilizer to alleviate it.

It may be due to the temperature of the environment is too high, or the plant has a lack of water, if there is a lack of water, then it should be to replenish water in time, and there is a cooling treatment, in fact, this can prevent and control vegetable curls, so vegetable farmers should need to pay attention to them, take care of them.

Tomato virus disease, for example, is the most typical. Refers to a disease, not a disease. Because there are many pathogenic bacteria that cause tomato virus disease, each pathogen will show its own symptoms.

However, they have a common feature after the onset of the disease, that is, the tomato leaves are curled and deformed. As a result, the edges of tomato leaves curl upward, the leaflets twist and deform, and the whole plant shrank. However, there is a pest on tomatoes, and the symptoms are very similar to those of a viral disease.

In actual production, many vegetable farmers and even agricultural technicians often can't tell the difference, that is, the tea yellow mite on the tomato.

The leaves of the tea mite are curled and deformed. 1.In the early stages of viral disease, the veins of the heart leaves fade and gradually turn into wrinkles of flowers and leaves.

Later, the diseased leaf thickens, and the leaf margin curls forward, forming an upper bucket. The harm of tea yellow mite is that the whole leaf fades, and the leaf edge curls backward to form a lower bucket. 2.

When the virus disease damages the fruit, there are dark green and light green spots, and there are wart-like protrusions, while when the tea yellow mite damages the fruit, the surface of the fruit stalk and sepal is gray-white to gray-brown, loses its luster, and becomes hard.

3.The main veins of the leaves are brown or black necrosis caused by viral diseases, and gradually spread to the side branches, main stems and growth points, while the harm of tea yellow mite is that any part of the back of the leaf may be gray-brown or yellow-brown with oily luster. But the biggest difference between the two harmful symptoms is that the curly leaves caused by viral infection are soft to the touch, while the curly leaves caused by the tea yellow mite are hard.

Another difference is that the leaves curl backwards after the tea yellow mite is infested, rather than curling like a viral disease.

The damaged leaves become thick and hard, and sometimes the back of the leaves is slightly shiny. In addition, aphids and root-knot nematodes damage plants with curly and deformed leaves, and aphids can also transmit viral diseases, which can curl and deform tomato leaves infected with viral diseases. At the beginning of the virus, the veins of the heart leaves fade and gradually turn into wrinkles of the leaves.

Later, the diseased leaf thickens, and the leaf margin curls forward, forming an upper bucket. The harm of tea yellow mite is that the whole leaf fades, and the leaf edge curls backward to form a lower bucket. When the virus damages the fruit, there are dark green and light green spots with wart-like protrusions, while when the tea yellow mite damages the fruit, the surface of the fruit stalk and sepal is gray-white to gray-brown, and loses its luster.

No, it may have something to do with the use of fertilizers, or it could be that you used chemicals inappropriately, which eventually caused the leaves of the plant to curl.

This is only the case when there is a disease in the crops of the vegetables, so it is a disease problem.

This is a disease, which is relatively common, you can spray some pesticides, water in time, and pay attention to field management.

Vegetable crop leaf curl deformity is a pest, mainly due to the accumulation of mites on the leaves, resulting in plant damage and leaf curling.

This is generally a disease, generally malnutrition, lack of nutrients will be so, to apply fertilizer and nutrients to vegetables in time, but also to water more, to ensure that the sun is sufficient, this will not happen.

There are dedicated solutions to this problem, which are natural and harmless. Try it yourself.

Personally, I think it's caused by disease, because when I was young, my family also grew vegetables, so when such a phenomenon occurs, it must be caused by plant diseases.

Clean the farm, especially the diseased plant residue thoroughly. Spray the ground with 200 times of 848 disinfectant solution or 1000 times of sterilizer, and spray evenly and thoroughly. It can kill the residual viruses, fungi and bacteria in the soil, and effectively inhibit the occurrence of soil-borne diseases.

For vegetable diseases, whether it is business, root or other parts, prevention in advance is the most critical principle. Just like people's physical health, if it is in the early stage, pay attention to diet and strengthen exercise, well, this person will be healthy when he is old, and he will not get sick, this principle is the same.

In fact, the most effective way is to change the stubble, but now it is not realistic in this kind of greenhouse facility vegetables, so we in the existing situation, how to prevent it in advance is very critical.

In fact, the most effective way is to change the stubble, but now it is not realistic in this kind of greenhouse facility vegetables, so we in the existing situation, how to prevent it in advance is very critical.

Therefore, the facility management of greenhouses is particularly important, and one of the main causes of some vegetable diseases is environmental factors, especially under such high temperature and high humidity environmental conditions, it is particularly easy to cause them to have this disease at the same time, some soil fertility, and they themselves are also one of the reasons for some diseases. Therefore, the management and control of temperature and humidity should be strengthened in the shed area, especially in winter.

Secondly, nowadays this kind of facility vegetables it grows all year round, and a single crop has led to the disease of this kind of soil, and the pathogenic bacteria are particularly withered.

Therefore, soil disinfection is particularly crucial. Some root diseases of vegetables, such as sclerotinia sclerotinia sclerotiorum, wilt, wilt and other diseases, are caused by soil transmission, and it is very difficult to wear.

Secondly, nowadays, this kind of facility vegetables are grown all year round, and a single crop has led to the disease of this soil, and there are many pathogenic bacteria.

For this reason, Lao Liu suggested that the defeat is to keep the soil at all times, which should not be too compacted and loose.

Then the overuse of this fertilizer will be reduced, and at the same time attention should be paid to the use of some organic fertilizer, to prevent an acidification of the soil, well, at the same time, to cultivate this microflora environment of the soil, well can effectively prevent the spread and occurrence of this disease. Wrote some prevention and control agents, I will not repeat much, you can go to the local agricultural store for consultation, especially in the summer high temperature, this time there is a 1 2 months of high temperature period, at this time the crops in the shed have been pulled out of the garden, you can carry out high temperature sterilization in the high temperature stuffy shed in the cave mountain, to make full use of this time for soil disinfection.

For this reason, Lao Liu suggested that the soil should be kept at all times, not too compacted, and loose.

The third point is to take comprehensive and long-term prevention.

For the management of temperature and humidity sheds, there is also the treatment of soil, which can not be controlled by pesticides and fertilizers alone, and there are many types of prevention and control of specific diseases.

The third point is to take comprehensive and long-term prevention.

Original, plagiarism must be investigated].

Original, plagiarism must be investigated].