What are the symptoms of bacterial blight on carrots? What harm can it do to carrots?

Introduction: Carrots are an essential part of life. It is not only rich in vitamins to supplement the nutritional needs of the human body, but also gradually widespread on the tables of the majority of hotels.

Good carrots bring people a different taste of food, if you choose inferior carrots is not conducive to human health, but also bring inconvenience to consumers. So what needs to be paid attention to is what are the symptoms of bacterial diseases of carrots? What harm can it do to carrots?

There are the following observations.

It is not difficult to find that farmers who have planted carrots have a correspondingly deep understanding of disease research, among which leaf decay is the most harmful to carrots, and the main infection comes from the soil. At the same time, the petiole will also carry a certain strain, and the strains can infect each other, and special attention should be paid to spraying pesticides during the seedling stage of carrots. It can prevent carrots from being attacked by pests and diseases, causing root rot, and the growth period of carrots is often the most susceptible to infection.

It is necessary to ensure that the right soil temperature is conducive to the healthy growth of carrots.

The time of bacterial infection is during the planting of carrots, and the same humidity needs to be controlled, and planting in the rainy season should be avoided as much as possible. At the same time, it is necessary to ensure that the humidity of the planting land and the drainage of the field are perfect, and the appropriate amount of pesticides can prevent the disease of carrots, and spraying pesticides during the growth of carrots can effectively prevent carrots from being damaged by bacteria. When the seedlings have just sprouted, if they are infected with bacteria, they tend to have lesions, which can lead to rot and darkening of the color.

As the seedlings gradually wither in the later stage, such a situation is often a blow to agriculture.

When planting weather is in the seedling stage of carrots, if there is continuous light rain, the seeds will not germinate properly. The roots are also in the same condition as the above-mentioned diseases, not only rotting but also developing lesions, which appear strange colors on the edges of the lesions. At the same time, there will also be cracks in the middle of the seedlings, which will cause the cotyledon to break and fall, and will also directly lead to the withering of the seedlings, which will affect the yield.

Carrot bacterial blight will occur in all stages of growth, with the early stage being the most harmful, which is easy to cause premature aging and death. The disease mainly harms carrot leaves, flowers, and petioles. In the early stage of the disease, there will be obvious black-brown or yellow-brown irregular round lesions at the edge or tip of the leaves, and in the later stage, with the expansion of the lesions, they become black-brown necrotic spots, and there are obvious yellow halos around the necrotic spots.

In severe cases, the leaves of the whole pruning are dry and wilted.

In the early stage, the leaves will have some small yellow spots, and then they will slowly expand, and in more severe cases, the liquid will also dry up and die, and the petioles will produce some dark brown stripe lesions, and finally dry up and die. It will reduce the yield of carrots and the quality will be poor.

The main thing is to damage the leaf petioles, flowers, and yellow spots on the leaves, and the flowers will wither and die after infection, which can easily cause carrot wilting.

Initially there are a few small yellow spots on the leaves, which then spread to the death of the entire plant. It may make the growth of carrots very bad, and it is not large, and in severe cases, it will lead to death and infect some plants.

Summary. Carrot late blight is mostly concentrated in black spot, brown spot, bacterial leaf spot and other symptoms. The first control method is to sow seeds with 50% Puhein wettable powder, or 50% Fumei double wettable powder 40% after seed dressing.

Second, the implementation of two-year crop rotation. Third, increase the application of basal fertilizer and top dressing. FYI.

Carrot late blight is mostly concentrated in black spot, brown spot, bacterial leaf spot and other symptoms. The first control method is to sow seeds with 50% Puhein wettable powder, or 50% Fumei double wettable powder 40% after seed dressing. Second, the implementation of two-year crop rotation.

Third, increase the application of basal fertilizer and top dressing. FYI.

What medicine to use before leaving the ground.

The leaves are yellow to the top.

The carrot leaves you described are yellow to the top, so it should be that the carrot bacterial blight has occurred. In the early stage of the disease, the drug can be treated in a timely manner, and the agent can be selected with 4000 times of 72% agricultural streptomycin sulfate soluble powder, or 4000 times of new phytomycin, every 7 to 10 days, a total of two times, spraying. However, be sure to consult your local agronomist for proper use of the medicine before using it.

Because your account alone can't confirm what disease happened to the carrots.