Control methods of plant scale insects

The shell insect is a great headache for many flower friends. Because the adult shell of the shell insect is waxy, it can be said that it is non-invading. Some flower friends kill their own flowers or succulent plants when they treat the shell insect, and there are many cases in which the shell worm is still there. Therefore, the control of scale insects should be early rather than late. There are also netizens sorted out the key to the prevention and control of shell insects: early rather than late, ruthless, not soft, folk prescription thrown aside, pick up pesticides and spray quickly. The editor will introduce five specific methods of shell insect control for you in detail, so that your plant can be free from shell insects.

Shell worm

Be careful not to share basin water in soaking basin

Do not share the basin water when you do not change the basin, especially if the plant does not grow well but has an obvious appearance, do not share the basin water with other plants.

II. Isolation and observation of new flowers and plants plus base

In outdoor breeding, new flowers and plants must be isolated and observed for more than two weeks, and with the bottom support, the root powder will climb out of the bottom hole to meet its beloved plants, especially succulent plants.

Third, do a good job of killing nymphs in winter and stinging.

During the dormant period of flowers and plants in winter, the eggs and nymphs also rest. At this time, the shell insects are the most vulnerable, because the invulnerable god outfit has not yet been installed, and the prevention and treatment can get twice the result with half the effort at this time. The low toxic stone sulfur mixture can kill the insect eggs, and omethoate can also be sprayed and irrigated. Pay attention to choose sunny and warm weather to avoid plant frostbite. When nymphs occur after winter, spraying omethoate can also get twice the result with half the effort, and also pay attention to the work in sunny and warm weather (the above precautions should be sprayed once every 10 days and 3 times in a row, especially for those who have experienced shell pests in flowers and plants that year); there is a mixed period of adults and nymphs from May to June, and omethoate is no problem. If there are more adults, you can kill phosphorus directly.

Shell worm

4. Killing ants

Ants are close comrades-in-arms of scale insects, and they graze them like sheep, so as soon as they find ants, they immediately sprinkle some drugs such as Miqing within 5 meters around the nest, and the effect is remarkable.

5. Killing adults

The emergence of adults is a little tricky. Cotton swabs stained with alcohol or anything sticky that does not hurt flowers and plants, peel off the scale insects visible to the naked eye and execute them. Blowing cotton scale bouncing ability is good, but it is very easy to find, see a pile of white catkins, that is, blowing cotton scale hiding place, directly wear gloves to pinch, must be ruthless. Adults deal with seven, seven, eight, eight is to kill the root work, can be used parathion (quick culling), easy to buy media drugs, and so on. In fact, parathion can be a nest of adult nymphs, lazy friends can skip the process of hand grasping and spray paracetamol directly. Introduction: with a unique professional penetrant in the world, it can penetrate shell and wax layer, has excellent control effect on shell insects, especially shield scale, and can penetrate leaves to kill insects on the back of leaves, with a lasting period of more than 30 days.

For root powder medium, in addition to spraying, there is one more step, that is, root irrigation, the dilution degree of acetophos is a little higher than that of spraying (for example, if you spray with 1RO 800, you will get 1RV 1200, almost). The amount of irrigation should be based on the amount of water normally irrigated. Remember to add a base to the flowerpot and let the potion from the chassis last for 1 hour or 2 hours and then pour out.

The use of methamidophos usually comes once in half a month-20 days, at least twice in a row. At present, the pests I have encountered have been extinguished once, and the second time is pure prevention. It is not possible to spray and irrigate roots at noon in midsummer. In addition, I would like to remind you that methamidophos has a strong smell and must be used outdoors. Pregnant women and children at home should avoid using it.

Although the scale bug is a headache, prevention is more important than cure. As long as the prevention work is done, the annoying shell bug will not find you, and there will be no need to treat the headache.

Control methods of plant scale insects

Scale insects gather on branches, leaves and fruits, prick and absorb juice, which can not only cause branches and leaves to wither and die, but also induce coal fouling disease. Generally speaking, it is difficult for insecticides to pass through the wax layer of shell insects, and the period for effective control of nymphs is relatively short, so it is easy to miss the opportunity of control and it is more difficult to control. Therefore, if the shell pests on garden plants are not controlled in time, the ornamental value of garden plants will be greatly affected.

In recent years, 40% melted EC (also known as 40% methophos) has obvious control effect on many kinds of scale insects on garden plants. It has good stomach toxicity, contact killing and penetration effect, can dissolve the wax layer of shell insects, can penetrate into plant tissues, and lasts as long as 30 days. After 30 days, the control effect can still reach more than 85%. It can also control whitefly, aphids and other stinging pests that harm garden flowers and trees. The specific method of use is to spray 1500 to 2000 times of 40% melted medium EC during the peak incubation period of the first generation nymphs. Spray 3-5 Baumedu stone sulfur mixture in winter or early spring to clear the garden in order to eliminate the eggs laid by overwintering scale insects. During the peak period of the occurrence of shell insects, 40% melted EC was used to control the disease with a mixture of 800x to 1000 times plus 20ml spray. Must pay attention to: can not be mixed with alkaline pesticides; ornamental flowers and trees to avoid flowering; high temperature season, sensitive plants must first be tested, and then applied; spray before 9: 00 in the morning and after 6: 00 p. M. it is better to spray trunks, leaves and branches, with water drip is the best.

The scale insect has poor ability of spreading and low population density, so it can be directly smeared on the insect-infested branches with a brush dipped in pesticides, and 95% oil emulsion 30 times to 50 times liquid, 45% crystal stone sulfur mixture 50 times liquid and so on. You can also scrape off the stem epidermis before applying medicine, scrape off a circle of epidermis at 50 centimeters from the ground, the ring is about 10 centimeters wide, and the depth is slightly up to the phloem, then cut several knives longitudinally with a sharp knife, reaching xylem, and then brush the medicine in the scraping place. apply drugs such as omethoate, imidacloprid, etc., with 1.5 ml to 2 ml of diluent per cm chest diameter. However, we should pay attention to the types of flowers and trees to ensure safe use.

Medicine can also be buried in the root zone, specifically by digging radial or arc ditches in the place with the largest number of fine roots around the plant, or digging circular ditches along the outer edge of the vertical projection of the crown, applying 15% iron in the ditch, 5 grams per centimeter breast diameter, and 5 grams per centimeter crown diameter for shrubs; flakes of flowers and trees can be trenched between plants and rows, applying 4 kilograms per mu. After the shell nymphs hatch, they first gather to feed, crawl for a period, and then fix the harm. Generally, the shell can be formed after 3 to 7 days. The body wall is weak in a few days after the shell is formed, which is the critical period of chemical control. The chemical pesticide 1.8% dichlorvos EC 1000 times, 2.5% deltamethrin 2500 times to 3000 times, or 50% fenitrothion or 50% malathion 1000 times, etc., can be sprayed with the best effect.

In addition, it should be noted that in the process of transportation, shell insects found on the seedlings must be completely removed to prevent them from being brought into the nursery or planting park. When transplanting seedlings, plant sparsely as much as possible, and use natural enemies such as small bees and ladybugs to control the population density. The scale insects like to be overcast and damp, and the ventilation and light transmittance are good after the flowers and trees are pruned in winter, and the humidity decreases, which can control the reproduction of the scale insects. If it can not be pruned, the injured tree has an obvious dormant period of fallen leaves, so you can try to spray diesel oil in winter. Diesel oil can directly destroy the wax shell of shell insects and kill them. In addition, the whitening of branches in winter is also a simple and effective measure to control shell insects.

How to control shell insects in succulent plants and the control methods of shell insects in succulent plants

Scale insects are the most common pests, which often cluster on branches, leaves and fruits, absorb plant sap for a living, and cause branch withering or whole plant death in serious cases. Today, the editor will tell you how succulent plants can control shell insects, and how succulent plants can control shell insects.

How to control shell insects in succulent plants

Strengthening plant quarantine: under natural conditions, the activity of scale insects is small, its own spreading ability is limited, and its distribution has some limitations. However, with the development of production, the exchange and transportation of flowers are frequent, and the opportunities for man-made and long-distance transmission of diseases and insect pests are increasing. Quarantine work stipulates that flowers can only be transported without dangerous diseases and insects (including various breeding materials). If diseases and pests are found, various effective measures should be taken to eliminate them so as to prevent further spread.

Artificial prevention and cure

In the process of cultivating flowers, it is found that there are shell insects on individual branches or leaves, which can be gently brushed off with a soft brush, or combined with pruning to cut off insect branches and leaves. It is required to brush clean, cut clean, focus on burning, do not throw.

Control methods of shell insects in succulent plants

1. Garlic

Mash 2 pieces of garlic, add 2 kilograms of water, soak for half a day, spray the injured site after clarification, spray once every three or four days, three times in a row, you can kill all red spiders and shell insects. In this way, we can not only kill pests, but also inhibit the reproduction and spread of germs.

To treat powdery mildew and black spot of rose, take 30 grams of garlic, mash it and add 500 grams of water, stir and filter, and spray the filtrate on the leaves once a day for 3 or 4 times. You can also apply garlic directly to it with a brush or toothbrush. Mashing and sprinkling garlic in the basin soil can also kill earthworms, ants and nematodes.

2. Cigarette butts

Soak 30 cigarette butts with 500 grams of water for a day and night, filter and add a little soap liquid, spray to the affected area, once a day, 3-5 times, can kill aphids and shell nymphs.

Third, wind oil essence

Diluting 600 to 800 times with essential oil and spraying the diluent on diseased plants several times can kill aphids, red spiders, shell insects and whiteflies.

Fourth, pepper

With 50 grams of pepper, add 500 grams of water in the pot to boil, boil into about 500 grams of liquid medicine. This liquid can control whitefly, aphids and shell insects. When applied, it is sprayed 6-7 times with water, once every 3-4 days.

5. Baking soda solution

Take 5 grams of baking soda (also known as sodium bicarbonate), first dissolve it with a small amount of alcohol, and then add about 1000 grams of water to form a 0.5% concentration solution, spray plants, can control powdery mildew.

VI. Plant ash

Take 50 grams of plant ash, add 2500 grams of water, fully stir, soak for 48 hours, filter, add 3 grams of washing powder to the filtrate and stir fully. This liquid can treat aphids, red spiders, whitefly, shell insects and other piercing and leaf-eating pests, poured into the soil can prevent maggots. Spraying once a day for three consecutive days, and then spraying for three consecutive days after seven days, the second generation pests can be eliminated.

The above article introduces how to control shell insects in succulent plants and the control methods of shell insects in succulent plants. Thank you for your reference and support.