How to deal with insect pests when planting white radish?

It is often said that turnips in winter are the best nourishing food. In our Central Plains, many families have fewer turnips than white. Many families like to grow some white turnips.

I will introduce white radish during the planting process. Diseases and diseases, as well as preventive prevention and control methods encountered pests and diseases.

Which pests generally occur in turnips.

1 frost mold.

When this disease occurs, it is mainly damaged by strains. When the passage encounters this disease, the first is from the outermost surface of the leaf, some light green or light yellow is very small on the surface of the leaf. Then, this spot will slowly get bigger and the color will change color, this will gradually turn yellow-brown at this time, and this spot will be bigger.

The veins are blocked, making the point triangular, and there will be some white mold on the back of the leaf during dry rain. If infected with this cold mold, then the leaves will die. For this cold mold needs to be treated with chemicals**, the use of frost** and the use of zinc powder or paramanganese powder have a reasonable spraying of leaves to achieve the effect of **.

2. Black rot.

This virus is mainly a lesion caused by black rot. All of them are black: when such a lesion is present, it usually remains from the middle of the branches.

The branches of the meat turn black, then begin to rot, and eventually there will be some cavities. There are several factors that contribute to this causative infection. The weather was hot and there was too much water.

The block of the drainage system is not good, there is one after planting other crops, and one is that insects may come to this black rot, then this black rot pesticide can be made from streptomycin powder. ** and defense.

3 Viral diseases.

Radish seedlings of this disease are shorter than normal growing radish seedlings. There will be uneven color, or discoloration in the branches, the most obvious is leaf art, this virus is mainly caused by insects, generally in field management, high temperatures or drought, is a condition that causes this viral disease. This virus uses diaphragm deception, it is necessary to make the spout 2-3 times better.

The white radish is in the ripening stage, and if it is a corn bug, if it is a corn bug, there is no need to deal with it. The absence of a part of the radish does not affect the growth of the white radish, but there is a certain situation. This is the black heart of white radish, which is what we usually call black heart radish.

This disease is often a problem. Before planting turnips, it is necessary to pay attention to it. It can be used in the past to buy special powders to avoid the appearance of black carrots.

Prevention and prevention of common pests and pests in the cultivation of small park diary and turnips.

During the ripening period of the white radish in autumn, due to the rain, it will cause the turnip to turn into a turnip, which is like the feeling of the panmuelin. This is called soft erosion, this disease also needs to be considered before planting, when planting white radish for the first time, we must leave a certain gap between the cultivated land, the growth movement of the pile, as well as the excessive drainage of the long square soil using rainwater, the plant radish seeds, the plant seeds on the rectangular soil, which will greatly avoid the occurrence of soft rot.

Carry out soil disinfection and sterilization and underground pest control. Fungicide spray 50 - 600 times liquid or 70-toluene thiazine 800 - 1000 times liquid, insecticide spray 48 - 800 - 1000 times emulsifiable concentrate. Crops with less fertilizer, more residual organic matter, and no pests and diseases of the same species should be selected for planting radishes.

The insect pests of radish are mainly aphids and soft rot, and 10 million units of 12% agricultural streptomycin sulfate wettable powder per mu are added with 50 75 kg of water or sprayed with 1000 1200 times of chlorothalonil dry granules.

When planting white radish encounters insect pests, aphids can be sprayed with 800-1000 times of 40% dimethoate, or 1000 times of imidacloprid, 1500 times of 10% of the suspension agent, or 1000-1500 times of Laixi suspension, etc., and 50% phoxanthion 1000 times of the liquid is used to spray the foliage or irrigate the roots.

I think that at this time, we should prepare pesticides to spray pesticides on the radish, and clean the inside of the greenhouse, it will be very clean and there will be no insects.

When encountering insect pests, it is necessary to spray insecticides in time, and potassium fertilizer should be applied to improve the insect resistance and disease resistance of crops, increase the light intensity, which is conducive to the growth and development of crops and resist the infestation of pests.

Pesticides should be sprayed in a timely manner, and pest control work should be done regularly, and at the same time, water and fertilization should be done in a timely manner, and the management of water and fertilizer should be strengthened, and attention should also be paid to the ratio of pesticides, to maintain soil permeability, pay attention to sufficient light, and should also be timely to remove weeds.

You can disinfect and sterilize the seeds of white radish in advance, or you can choose a white radish that prevents many insect pests, and carry out seedling raising and fertilization in advance, which can play a role in prevention.

We must do a good job in the drainage system, and we must water and fertilize in time, clean up some dead leaves, and spray the corresponding pesticides to prevent and control pests and diseases in time.

Summary. Hello, in the early stage of the disease, you should spray 300 500 times of broad-spectrum fungicide or 500 times of 58% methamanine manganese zinc fungicide for prevention and control, 7 10 days spray 1 time, 2 3 times. If the central diseased plant is found, the diseased leaves should be removed and sprayed in time.

There are many white radish pests and diseases, how to prevent and control white radish pests and diseases?

Hello, is there a way to cure jumping beetles without pesticides?

Hello, in the early stage of the disease, you should spray 300 500 times of broad-spectrum fungicide or 500 times of 58% methamanine manganese zinc fungicide for prevention and control, 7 10 days spray 1 time, 2 3 times. If the central diseased plant is found, the diseased leaves should be removed and sprayed in time.

Is there a way to use pesticides?

Vinegar can be sprayed during the prevention period to effectively control insect pests.

How are jumping beetles created?

Are jumping beetles related to butterflies?

From March to April every year, when the temperature rises, the adults crawl out of the soil layer to harm the overwintering cruciferous crops; Around May, a large number of adults migrated to the rape field to harm crops; The peak of insect infestation is from mid-May to mid-June; From late June to early July, the spawning season begins (the spawning period lasts for several months). 2. The eggs laid hatch into larvae after 3-9 days, of which the 1st instar larvae are mainly concentrated in the 10-15cm soil layer and bite the roots of crops, and then the larvae are transferred to the 15-30cm soil layer with the passage of time; Around the end of August, it enters the peak period of pupation, and the pupal stage lasts for about 20 days; In mid-September, the adult insect enters the peak period of emergence, and if there is no emergence, it enters the overwintering state.

Are there jumping beetles on red rotips?

Yes. If you switch to red robb, will you worry about jumping armor again?

Regular medication prevention is fine.

During the growth period of white radish, there are mainly soft rot, cabbage insects, aphids and other pests and diseases. White radish has powdery mildew and green worm disease during the growth period. Radish planting is mainly harmed by downy mildew and virus diseases. Prevention is the priority, and comprehensive prevention and treatment are carried out simultaneously.

Aphids, grubs, diamondback moths, jumping beetles, powdery mildew, are all common diseases, which will affect the growth rate, and the roots are likely to be affected.

When white radish is planted, the diseases that often appear are, cabbage worms, grubs, mole crickets, needleworms, beetles, ground tigers and so on.

Black spot, white spot, anthracnose, white rust, downy mildew, etc., these pests and diseases will affect the yield of white radish.

The planting time of radish is to start sowing in May, and the planting is different in different regions, so it is necessary to choose the planting according to the local climate, and the varieties should not be planted too late or too early. The early cold climate will damage the seeds, and planting radishes too late will be cold, or the bran of radishes is not brittle, so it is necessary to arrange the sowing time reasonably when sowing. Choose a plot before starting sowing, preferably with obese soil.

Stopping is the most important point, first of all, apply enough low fertilizer, the fertilizer should be cooked with farmhouse fertilizer, it must be a corrosive agent. Because raw fertilizer will cause many germs to enter the soil and cause pests and diseases, healthy fertilizer will make the radish vigorous and free from rotten root disease. When building a ditch, it is better to raise the ditch so that the soil thickness, root depth, soft sunlight to prevent the roots from drying, not conducive to growth.

The rootless system of fertilization is developed, which is suitable for early deep ploughing and basic fertilization, and the soil should be applied to Chongqing area as 5 kg of organic circle fertilizer. Spray the surface of the soil with grass and wood, and then turn the soil deep and rake it flat to make the ditch better. According to the way of making furrows, radish is generally planted in autumn according to the variety, climate, soil quality and other conditions, and the furrow planting is generally 50 cm, about 30 cm high, about 20 meters wide, and about 1 meter wide.

Choosing Lao Luo is the key. It is suitable for local temperatures, if there is a high temperature and drought, you can sow late, carefully select the seeds, rinse the seeds before sowing, squeeze the seeds or remove the grains. And, open a shallow ditch at the top of the ditch, spray along the ditch, then cover with fine soil, water in the middle of the ditch, and then hug the flat surface.

The normal planting time here is between mid-July, so sowing is done before the beginning of autumn. The rural proverb is "Second Battle, Half-Brother", and radish is planted about 10 days before cabbage. From planting to harvesting, the time suitable for radish growth is only 3 months, so planting radish should not be too early or too late.

If planted early, the radish will produce a chaff-pumping heart, which will affect the quality of the radish. If the radish is planted too late, it cannot be harvested during the growing season, and the weather has become colder, especially in the frost season, which is prone to occur in the East China Sea.

The soil for growing radish requires a loose soil layer and good air permeability. The selected plots are suitable for 3 5 rotten farmhouse manure per acre, which can be said to be rotten chicken manure and sheep manure in the countryside. Sprinkle 15 kg of diammonium phosphate, 5 kg of potassium sulfate.

To achieve high value-added yields, the premise is to fertilize the soles of the feet. Deep flipping after application of fertilizer. The radish seeds should be full and even, without damage and no bad eggs.

To select and plant strong radish seeds for high-quality pests and diseases. The seed which can be coated is the best. If you buy seeds without clothing, you can mix them with your own pesticides to prevent various pests and diseases that occur during the planting process.

Pesticides must be used, because pests do not disappear easily, and if you want them to disappear completely, you have to use pesticides to get them away.

Yes, because there is no way to artificially control such pests, they can only be removed with the help of pesticides.

Yes. Moreover, pesticides can also avoid the damage of these pests to a certain extent, and can also increase the yield to a certain extent.

Yes, pesticides must be applied, otherwise these pests will not be destroyed, and there will be more of them.

When the radish is transferred out of the land, remember to cover the soil on the radish again, which is called soiling. If there is no soil, the white radish will blow wind and rain outside the soil, and the white radish will become green and hard. That's not going to taste good.

It's also a waste of the seeds that were bought with money ... Written in the fourth class of Shuitou Central Primary School.

The main insect pests for radish production are aphids, cabbage worms, yellow striped jumping beetles, etc., and the main diseases are downy mildew, black rot, virus diseases, etc. The prevention and control measures are as follows:

1. Diseases. 1. Downy mildew: Downy mildew of radish mainly harms leaves.

The onset begins on the outer leaves, with small spots on the leaf surface that are pale green to pale yellow, enlarged and yellowish-brown, and are polygonal due to the restriction of leaf veins. White mold appears on the back of the leaf when wet, and the outer leaf dies in severe cases. The control of the agent is 600 800 times of 72% frost urea manganese zinc wettable powder, or 1000 times of 69% anker manganese zinc wettable powder, or 600 1000 times of Pulik for foliar spraying.

2. Black rot: Black rot is a disease caused by black rot fungi, the main symptoms are the blackening of the root center and the vascular bundle of the fleshy root becoming black and rotting, and then forming cavities. High temperature and rainfall, excessive irrigation, poor drainage, fertilizer rotting, continuous cropping, and man-made wounds or insect injuries are more conducive to the disease.

Pharmaceutical prevention and control can be sprayed at the beginning of the disease with 41% Holik suspension 5000 times, 72% agricultural streptomycin 3000-4000 times or 50% DT wettable powder 500 times, once every 7-10 days, continuous prevention and control 2? d3 times.

3.Viral disease: The virus disease plant is obviously dwarfed, and the leaf color is yellow and green or deformed.

Aphids are important vectors. Extensive field management, high temperature and drought, large occurrence of aphids and jumping beetles, or weak plant growth, and severe disease. In the early stage of the disease, you can use 500 times of phytochlorpin solution or 500 times of 20% virus A wettable powder, spray 2 3 times.

In order to enhance the resistance of the plant, while paying attention to prevent high temperature, drought.

2. Pests. 1. Aphids: When there are 3-5 aphids per plant on average, they should be sprayed for control: 800-1000 times of 40% dimethoate, or 1000 times of imidacloprid can be sprayed.

2. Cabbage insect: It is the larvae of the cabbage butterfly, mainly for the leaf damage. The larvae of cabbage arterium have a small amount of food before the third instar and poor drug resistance, so the pesticide control should be controlled before the third instar.

The drug prevention and control selection is 10% 1500 times of the suspension agent, or 1000 1500 times of the Laixi suspension agent.

3. Yellow-striped jumping beetle: both adults and larvae cause harm. Adults bite the leaves, the larvae damage the roots, and the fleshy roots of radish finally turn black and rot after being damaged. The pesticide control is sprayed on the foliar surface or irrigated by using 50% phoxanthion 1000 times.