White bugs on persimmon trees! How to prevent it?

Persimmon tree pest control.

First of all, the persimmon scale is a very serious insect pest of persimmon trees, persimmon scale is a very serious insect pest that often occurs in persimmon trees, persimmon scale is a kind of scale insect, belongs to a very difficult to kill insect pest. Persimmon scale is a white scale shell with white sticky hairs, which looks like poplar catkins, and if the scale insect is wiped off, there will be red liquid flowing out, in short, it is a very disgusting and annoying insect. Once the scale insect occurs, it is very difficult to eliminate, and the surface of the scale insect scale insect has waxy substance on the surface of the scale insect and has strong resistance to insecticides, so it brings great difficulties to the insecticidal work.

The persimmon scale seriously affects the growth of the persimmon tree, especially the most serious damage to the persimmon, the quality of the fruit is seriously damaged, the formation of fruit drop, etc., and the trunk will die.

Therefore, once it happens, it is necessary to carry out insecticidal work in a timely manner, often use tachyscale grams to effectively spray insect pest areas, and then it is very important to find them in time, and then if persimmon scales appear in the fruit stage, you can choose to spray chlorpeats for effective spraying and control.

There is also a kind of bug, which is, the persimmon star inchworm. Persimmon star insects mainly eat the leaves by larvae, and in severe cases, they will gnaw all the leaves, which seriously affects the photosynthesis of persimmon trees. The control method is to kill the larvae after shaking from the persimmon tree at the stage of high larval incidence, and can also be sprayed for control.

In late autumn or early spring, the soil around the trunk can be turned over to kill pupae.

Persimmon cotton mealybug, cotton mealybug is a kind of scale insect, adults and nymphs mainly rely on sucking the juice of leaves and branches, and in severe cases, it will also damage the fruit, affecting the quality and yield of persimmons. If you want to get rid of it, you can spray stone sulfur mixture to kill nymphs after the persimmon tree has fallen its leaves or before germination in autumn, or you can scrape off the dead bark of the persimmon tree before wintering to eliminate the nymphs that are lurking in the dead bark and preparing to overwinter. During the stinging and hatching period of nymphs, spray in time to eliminate larvae.

Quoting the social variety

White insects appear on persimmon trees, most likely persimmon scales. The use of pesticides to control, in early spring persimmon tree germination, spray Mido stone sulfur mixture or diesel emulsion, before the nymphs have not formed wax shells, spray scales to kill special or scale shells to kill emulsifiable concentrate, and other pests after the wax shell is formed, can be sprayed 800-1000 times the solution of wax scales.

The small white worms on persimmons are also known as persimmon scales, commonly known as tree lice, which are one of the main pests of persimmon trees. After the persimmon tree is infected with the disease, it will harm the young branches, young leaves, fruits and other positions of the persimmon tree, resulting in yellow-green dots on the damaged position of the persimmon tree, and then gradually expand into black spots, so that the persimmon is soft and fall off, so that the yield is reduced, and it will also affect the quality and ornamental effect, and the harm to the persimmon tree is greater. Persimmon.

2. Prevention and control measures 1, pastoral cleaning: do a good job of pastoral cleaning, cut off and burn the remaining diseased and insect branches on the persimmon tree, so as to reduce the appearance of pests from the source. 2. Protect natural enemies:

Protecting the natural enemies of persimmon scales, such as red-spotted ladybugs, grass frogs, and black-edged ladybugs, can control persimmon scales. 3. Strengthen management: manage persimmon trees, apply fertilizer reasonably, and water them appropriately, which can improve the disease resistance of persimmon trees.

4. Pesticide control: Before the persimmon tree germinates, you can spray a 5-degree stone sulfur mixture and 5% diesel emulsion of Baume, which can eliminate the overwintering nymphs. In the spring, before the overwintering nymphs leave the overwintering position and have not yet formed a wax shell, they can be sprayed with 40% dimethoate 1500 times solution or 50% dichlorvos 1000 times solution.

When the wax shell of the persimmon scale is formed, you can spray 800-1000 times the solution of wax scales to completely remove the pests.

If there are bugs on the fruit trees, this is the place where you can sell pesticides. Describe the appearance of the insect to the salesperson, or take a picture. Then ask the salesperson to give you some anthelmintic medicine.

1. Vinegar prevention and control: rub the damaged branches and leaves or fruits with cotton balls or gauze dipped in vinegar, which is convenient and good for no drug residues, and can also play the role of foliar fertilization.

2. Prevention and control of liquor pouring: add 1 times of water with 60° liquor, and the dosage is determined according to the size of the tree. In the temperature rises scale insects.

At the beginning of the activity, peel the soil under the tree to see that the roots can be watered, once every half month, 4 times in a row can eliminate the scale insects.

3. Soda ash. Prevention: spray with soda ash or solution to corrode the scale shell and make it extinct. Use low concentration when the temperature is high, and use high concentration when the temperature is low.

4. Diesel laundry detergent.

Emulsion spraying control: use laundry detergent, diesel, water according to: 200 configuration, first dissolve the laundry detergent with a small amount of water, and then slowly drop into the diesel, stir while adding to form a white emulsion, add water to spray or wash with a brush, cloth dipped in liquid, smear the scale insect part, so that it shells and perishes.

5. Artificial pruning control: insects should be re-cut in winter and summer.

The orchard is then swept and burned. At the same time, fertilizer and water management should be strengthened to promote the extraction of new shoots, renew the canopy, and restore the tree's potential.

Persimmon infected with persimmon pedicle, the larvae of persimmon pedicle worm are white, in the larval stage, they mainly eat the fruit hygiene, when the persimmon is not ripe, his larvae may have burrowed into the persimmon, parasitizing in the persimmon until it passes the larval stage, and the persimmon is just beginning to be affected by scale insects.

In the event of infringement, the branches and leaves that have been infested should be cleaned up in time, and destroyed as much as possible to avoid infection, and the source of infection should be cut off in time.

Spraying when clearing the garden, it is recommended to have 3-5 Baumé stone sulfur mixture, preferably with an adjuvant (mineral oil.

Vegetable oil, organic silicon), but in some areas the stone sulfur mixture effect is not good, you can spray snail ethyl ester or propyl ether with cypermethrin in winter, scale insects from the egg stage through the larval stage, into brownish gray, its growth transformation time is basically half a month to 20 days or so, will eventually become a shell and become an adult. At this point, it is too late to control and must be applied at the larval stage.

Before or after flowering, add 2 bottles of chlorpyrifos and peracetic acid per 800 kg of water.

2-4 bottles, 2 packets of methyl WP (secondary dilution), urea.

One kilogram, one bag of boron fertilizer, and the whole tree is evenly sprayed. The control began in early February. Scrape off the old bark at the base of the trunk, and then apply sticky shellac with a width of 10 centimeters, which can kill the larvae and adults on the tree, and remove the adhered pest carcasses every day to ensure that the fruit tree is clean.

Persimmon grows to egg yolk, then about May 15 to 25 around with chlorpyrifos or thiamethoxam.

1 800 1000 times liquid spray on persimmons accurately sprayed (with a straight nozzle), the leaves should be penetrated, because what this time is to prevent persimmon lice on the entire persimmon production. From early April to early May, persimmon trees.

Before the leaves bloom, persimmon Mianjie has been stinging, has not secreted wax layer, is the critical period of prevention and control, if the drug is used twice in a row, it has special benefits for the prevention and control of cotton powder and persimmon Rongjie throughout the year. Using the winter pruning method, the branches that will be harmed by pests and diseases, as well as the old bark, are cut and cut off, and finally the larvae that survive the winter are burned. In addition, there may also be larvae on the remaining dried persimmon pedicles, which should also be cut off in time.

If there is a small white bug in the lion, throw it away. No, always. Supplementing yourself with high-energy and high-protein bugs proves that there is a problem inside.

It can only be thrown away, if it is a large batch of Wenzhou agricultural experts to study it, but this batch of persimmons must be thrown away.

Of course, if you throw it away, you can't eat it, or you can take it to the seller, or you can't eat it.

Hello, can't eat. That's a scale worm. The persimmon with the scale insect attached to it can be eaten as long as the skin is clearly peeled, and the scale insect will not eat the persimmon.

Hello, can't eat. That's a scale worm. The persimmon with the scale insect attached to it can be eaten as long as the skin is clearly peeled, and the scale insect will not eat the persimmon.

The persimmon is a scale insect, which begins to sting in mid to late April, crawling to the young leaves, petioles, and the back of the leaves to suck the juice.

The first and second generations mainly harm leaves and twigs, the first.

The third and fourth generations mainly harm the fruits, with the third generation being the most serious. Initial medication is required to cure. However, persimmons attached by scale insects can be eaten, which does not affect the safety and taste of persimmons, and can be removed.

I hope my answer is helpful to you

The white spots on the persimmon tree are infested by the persimmon scale insectThis pest is more likely to occur on persimmon trees, and it occurs several times a year. During winter pruning, the branches that have been infested by insects should be cut and burned, and the persimmon tree should be sprayed with a baume 5 degree stone sulfur mixture before germination.

Before the larvae become wax shells, insecticides or dichlorvos are used to control them. If a white wax shell insect has formed, it should be sprayed with wax scale.

1. What are the white dots on the persimmon tree?

When the persimmon grows and matures, there will be a lot of white spots, which is actually the persimmon tree is attacked by the persimmon scale insect. This pest can easily occur on persimmon trees, it can occur several times a year, it is very hidden, people are not easy to detect, and usually attack the fruits and leaves of persimmon trees.

If there is no prevention and control in the early stage, it will become a white wax shell insect around August and September, and it will be more difficult to eliminate.

Second, the maintenance of persimmon trees

1. Temperature: The temperature suitable for its growth is between nine degrees and twenty-three degrees, and the temperature when the fruit is ripe should be maintained at 19 degrees to 23 degrees.

2. Watering: It is more drought-resistant, if the annual rainfall is more than 500 ml, it does not need to be irrigated additionally, if it is a potted plant, it is generally watered once a week, and the amount of watering each time is not too much, so as to ensure that the soil is completely moist.

3. Fertilization: It can tolerate barrenness, but it does not mean that it does not need to be fertilized, under normal circumstances, it can be fertilized once every two weeks during the growth period, and it can be applied with water-soluble fertilizer for sea meals, and it does not need to be fertilized during the non-growth period, and it needs to be fertilized once before the winter to ensure that it can survive the winter safely.

4. Light: It likes to live in a sunny environment, if it is an indoor maintenance plant, it can be allowed to receive all-day sunlight without human intervention. If it is an indoor maintenance plant, it needs to be maintained in a sunny place, and the light time should not be less than 8 hours a day.

Your stomach acid is enough to digest them, if you don't like it, you only need to pay attention to the part of the persimmon pedicle when eating, eat from the top down and don't eat the root, most of the persimmon pedicles are mostly active around the pedicle, and you can also directly cut off the persimmon pedicle and eat it. In the persimmon tree flowering, petals fall after the formation of the ovary, to bear small fruits, at this time will be insects, insects around the fruit pedicle of the small fruit to lay eggs, the eggs into the small fruit pedicle after the slow growth, the longest can grow to one centimeter long white worm, this insect is harmless to the human body. This is that the fruit farmers did not control the persimmon growth stage well, generally when the petals of the persimmon tree began to fall, it should be sprayed, so that the insects will die, once this stage is passed, it is useless to spray again.

Generally speaking, such small bugs are harmless to humans, and the bugs die under the action of stomach acid after entering the human body, which will not cause major effects. Experts introduce insects called "persimmon insects", insects that specialize in eating juice, persimmons with insects are easy to fall naturally on the tree, and this insect is not directly grown in the flesh of persimmons, which is harmless to the human body. <>

When you go to the market to buy, it is best to choose harder, take it home and put it together with apples and pears, so that the persimmon is soft faster, you can eat, moreover, pay attention to the part of the persimmon pedicle when eating, eat from the top down do not eat the root, generally persimmon worms are mostly active around the pedicle, and the persimmon pedicle can also be directly cut off and eaten.

Pay attention to prevention, keep the persimmon orchard clean, cut off the remaining diseased and insect branches on the tree, scrape off the old rough bark on the trunk, and destroy it after cutting. Protecting natural enemies can have a certain degree of control over insect pests. The use of pesticides, before the persimmon tree germinates in early spring, you can spray 5 Baumé stone sulfur mixture or 5% diesel emulsion, which can eliminate the overwintering nymphs.

Before the nymphs form wax shells, spray scales to kill special or scale shells to kill 1000-1500 times of emulsifiable concentrate. After the wax shell of the pest is formed, it can be sprayed with 800-1000 times the solution of wax coafen.

In the egg stage of scale insects, it is the best period to prevent scale insect pests and diseases, and the bark can be scraped and burned intensively to completely eliminate overwintering eggs. The method of identifying the egg insect stage is simple, crush the white scale insect by hand, if it is white powder, it belongs to the egg stage of the scale insect worm. At the same time as scraping the bark, cooperate with the garden, and burn the bark and weeds at the same time.

Fertilizers and pesticides should be used in a timely manner, because only in this way can you better reduce your losses and increase your own yield.