Why do white radishes have black hearts? What s going on with the turnip black heart

During the storage of radish, black hearts will also appear due to insufficient oxygen supply.

Measures to prevent carrots from being black-hearted:

1. The soil must be ploughed and whitened, which can remove harmful substances such as sulfur dioxide and hydrogen sulfide in the soil. Some lime powder can be applied appropriately to promote the decomposition of harmful substances. Fertilization should be fully decomposed, otherwise harmful substances will be produced.

2. The irrigation water used should be flowing water, and avoid using unpurified sewage or pond water with sulfur smell. Strengthen drainage and irrigation management to prevent water accumulation in the field.

3. Increase boron fertilizer. Apply 1 kg of calanitarian boron per mu, apply it together with other fertilizers as base fertilizer, or spray 0 2 -0 3 boric acid solution 1-2 times in the middle of radish growth.

4. Carry out soil disinfection before planting, and spray 1 time in 72 72 times of agricultural streptomycin sulfate wettable powder or 14 copper ammonia aqueous agent 300 times in 3 7 days, and spray 3-4 times in a row.

According to my experience, it is definitely related to the environment, less pollution, good soil conditions, and very few black hearts, no matter how you plant, I have not found it in our base. There are also many ruthless ways to improve the plots where black hearts occur, and I have seen them in the school test field, and there are them every year. It is said that it is formed by absorbing harmful substances, mainly because of unrotted organic fertilizers, chemical fertilizers, pesticides, acid rain, etc., and soil tillage measures can not keep up.

Improvement method 1st floor is written here to top it, but it is still recommended that you change the plot of land for more than two years to try in rotation.

There are three main reasons for the occurrence of black heart in radish: one is the lack of boron in the soil, the other is the lack of oxygen in the soil water or compaction, and the third is caused by black rot.

There are several cases of radish black heart for your reference.

1.Boron deficiency.

Radish boron deficiency is also known as black heart, brown heart or dry rot. At first, the roots appear black spots, the plant is dwarfed, the number of leaves is reduced, deformed, the concave part of the inner petiole is streaked, the development of new leaves is stunted, or bad maggots or even die. The inside of the tuber root is ring-shaped gangrene, black-hearted or dark brown, and severely spatiocentric.

Boron deficiency is particularly prevalent in times of drought. Excessive application of lime can also lead to boron deficiency.

2.Bacterial soft rot.

It mainly harms the base of leaves, stems and rhizospheres. In the early stages of the attack, the root crown is water-soaked and the petioles are softened as if they had been scalded with hot water. In severe cases, the center of the radish softens and disappears into a hollow and emits a foul odor.

The leaves also soften corruption. However, the difference between this disease and black rot is that the leaves and roots do not change black. Sometimes, when the disease becomes weaker, new leaves emerge from the root crown and appear deformed.

Prevention and control methods: avoid continuous cropping.

Pay attention to drainage. Choose disease-resistant varieties.

Seed sterilization. 3.Black rot.

At the beginning of the disease, the leaf margin is present"ⅴ"The font yellows, then the veins turn black, and then the whole leaf turns black, but no specific lesions are formed. There is no abnormality in the appearance of the roots at the beginning of the disease, for example, when comparing the two types of roots of healthy and diseased plants, the healthy plants are white and the diseased plants are slightly starchy. When the disease is severe, the catheter gradually decays, and the center disappears into a cavity.

Occasionally, the disease stops and leaves grow again from the root crown. Unlike soft rot, it does not soften and emit a foul odor.

Diagnostic essentials: Presence of leaf margins"ⅴ"Font-shaped yellow-brown lesions, with a yellow halo on the anterior edge of the lesions, and the lesion tissue was examined with light, and the leaf veins could be seen to turn black. Small pieces of diseased tissue are removed and examined under a light microscope to see a flow of bacteria.

Prevention and control method: seed disinfection.

The seedbed is made of disease-free soil.

Avoid continuous cropping.

There are three main reasons for the occurrence of black skin and black heart in radish:

First, it is the lack of boron in the soil.

Second, it is the soil that is waterlogged or compacted and lacks oxygen.

Third, it is caused by black rot.

The main reason for the black heart of the fleshy root of radish is the lack of oxygen in the root tissue caused by various factors. If a large amount of unrotted or poorly rotted organic fertilizer is applied in the radish field, especially the circle manure, or the weeds, residual branches and leaves of the plot are not cleaned up in time, or rotary tillage into the soil, planted in a short time, the microbial activity in the soil is vigorous, the consumption of oxygen is excessive, and it is easy to cause root suffocation, and some tissues will have black skin or black heart due to lack of oxygen.

Do not eat carrots and white radishes together:Although carrots and white radishes have many benefits for the human body, eating them together will reduce the nutrition of the two. White radish is high in vitamin C, and carrots contain a decomposition enzyme that fights vitamin C and destroys vitamin C in white radish.

The meeting of the two has caused a heavy loss of vitamin C in white radish, and its nutritional value has naturally been greatly reduced.

The above content reference: Encyclopedia - radish fleshy root black heart disease.

The above content reference: People's Daily Online - Although radishes are good, they can't be "eaten indiscriminately".

Radish black heart is radish black heart disease, because the water absorption of radish becomes poor, trace elements are missing, to put it bluntly, it is actually caused by radish after soaking in water for a long time.

This diseased radish tastes bitter and hard. Li Kehai, a large white radish grower, said that if the public buys it and eats it accidentally, it will not cause harm to the human body, but it is still not recommended to eat it. According to reports, because the requirements for white radish planting are still quite high, it is not suitable to grow in Fuzhou in such a season as summer, and can only be planted in some high-altitude areas.

There are three main reasons for the occurrence of black heart in white radish: one is the lack of boron in the soil, the other is the lack of oxygen in the soil water or compaction, and the third is caused by black rot fungus. The white radish has a black heart, and it is recommended not to eat it again.

It may be caused by land pollution, and black rot can also cause the skin of the black radish to appear black, or it may be caused by the deterioration of the radish itself, but whatever the reason, in order to avoid poisoning, it is not recommended to eat blackened radish. Similarly, if the white radish is blue when cut, it is not recommended to eat it again, this kind of blue-hearted white radish is actually the black heart disease of white radish, and in the early stage of infection, it is a state of blue heart. In the environment of high temperature and humidity, it is easy to cause white radish and black heart disease.

Damage of radish black rot: the disease damages the leaves and roots of radishes, and the diseased cotyledons are water-soaked at the seedling stage, and the root pith becomes black and rotten.

The leaf is diseased, the leaf margin is yellow in many places, and then the V-shaped lesion appears, the leaf veins turn black and reticulated, the leaf margin turns yellow, and then expands to the whole leaf turns yellow and dry.

Causes of radish black rot: The suitable temperature for the onset of radish black rot is 25 to 30, and the disease is severe when there is high temperature and rain, continuous cropping or early sowing, low-lying terrain, little fertilizer or not rotting, and man-made trauma and insect wounds.

Radish is a kind of black rot, which is mainly caused by bacteria in the soil.

That is, people are particularly scheming, dishonest, insincere, and dishonest.

Be a person and do things without deceiving others. Otherwise, it's a black-hearted radish.