The solution for scale insects, what scale insects are afraid of

Chemicals can be used to kill scale insects.

In the early stage of scale insects, you can apply 1000 times of general tree protection liquid to kill eggs by suffocation in the place where there are eggs on the plant, or you can choose 40% dimethoate 1000 times liquid or 50% malacine thion. Spray once every seven to ten days, spray two to three times in a row, and you can ** scale insects.

Mix liquor with water in a ratio of 1:2. When treating insects, water the surface layer of the potting soil thoroughly.

Scale insects begin to move at room temperature 7 in spring. It can be poured once in April, and then every half a month or so, and it is effective for 4 consecutive times. Use 50 ml of vinegar (rice vinegar), soak a small cotton ball in vinegar, and gently rub it on the stems and leaves of the affected flowers and trees with a wet cotton ball to wipe off and kill the scale insects.

This method is convenient and safe, which can not only achieve the purpose of insect control, but also make the damaged leaves green and shiny again. Gently and repeatedly rubbing the diseased plants with sprinkler sperm can get rid of scale insects, and they can be removed very cleanly and thoroughly. If you wipe the orchid disease leaves with sprinkler semen, not only can the scale insects be removed, but also the larvae that are not clear to the naked eye, they are also completely killed, and the second year is rarely found to have scale insects as a pest, this method is simple, safe, and the effect is good.

Use diesel, washing powder, water in the ratio of 10::6 to adjust the mother liquor, at this time the mother liquor contains 60%, milk-like, dilute the oil content of 30% with water, and carefully spray the scale insects on Milan, kumquat and cycad. After one week, most of the scale insects changed from fresh orange to shriveled state, indicating that this method has a good control effect on scale insects.

Scale insects can make the plant malnourished, you can smear alcohol, lime powder and other substances on the branches and leaves of the plant, which can effectively drive away scale insects, and you can also regularly spray the plant with insecticides such as scale killing and dimethoate, and keep the environment ventilated, placed in a ventilated and sunny environment to maintain it, so as to promote the recovery of the plant.

1. Alcohol

Scale insects will absorb the branches and leaves in the plant, which will cause malnutrition in the plant, and even cause the plant to induce other diseases, so that it will wither and die, it is more afraid of alcohol, you can use a brush or cotton swab dipped in alcohol, smeared on the branches and leaves of the plant, can effectively reproduce scale insects.

2. Lime powder

In fact, scale insects are afraid of a drier environment, so it is also afraid of lime powder and other substances, which can keep the growth environment of plants dry and effectively drive away scale insects.

3. Insecticides

When it comes to what scale insects are afraid of, insecticides such as scale killing, dimethoate, deltamethrin, imithion and other insecticides can effectively kill scale insects, and they need to be diluted with water and sprayed, which can be sprayed once every other week, and sprayed continuously for 3 to 4 months.

4. High temperature exposure

Although scale insects in summer, the reproductive ability is very strong, but it is still afraid of high temperature exposure, when the ambient temperature exceeds 38, it will make a large number of scale insects die, so when the plant is harmed by scale insects in summer, it can be placed in the sun to breed, need to avoid noon sunlight, to prevent burns.

Enhance maintenance, regularly water and ventilate plants to reduce the disease rate; Drug control, it was found that scale insects can be continuously sprayed with liquid medicine for insecticide; Garlic control, the garlic is mashed and diluted with water, and sprayed continuously for 3-4 days to kill pests; Laundry detergent prevention and control, use a drop of clear oil to dilute with water and spray continuously for 2-3 days with laundry detergent, which can achieve the purpose of killing insects.

1. Enhance maintenance.

The liquid water of plant leaves, it is easy to attract scale insects, we learn to regularly increase nutrition and resistance to plants to improve the survival rate, so as to reduce the probability of infection of pests, plants need to manually brush off the eggs on the branches in autumn, completely eliminate the insect source, and increase the light and wind permeability during the maintenance period, which can reduce the occurrence of pests.

2. Drug prevention and treatment.

If the scale insect is found, you can spray the scale Bizhi 750-1000 times the liquid, the liquid medicine is absorbed by the tree, and the scale insect will be poisoned and die when absorbed, and it is best to choose the temperature when the temperature is high, so that the conduction speed is fast and the scale insect is easy to be poisoned. When taking the drug, spray twice in a row, with an interval of 5-7 days, so that the prevention and treatment are more thorough.

3. Prevention and control of garlic.

Mash the garlic and dilute it with water, soak it for half a day and then spray it on the plant damage part, spray it every 3-4 days, and kill scale insects and red spiders and other pests three times in a row, this method can not only kill insects but also play a role in inhibiting the spread of germs and reproduction, which is a very effective prevention and control method.

4. Prevention and control of laundry detergent.

Take 2 grams of laundry detergent, add 500 grams of water and stir to the solution, add a drop of clear oil, and spray the insects on the plant, which can kill aphids, scale insects, red spiders, whiteflies, etc. Flowers with tuber roots or bulbs and fleshy roots are susceptible to nematodes, and can be sprayed continuously for 2-3 days when used to achieve the purpose of insecticide.

Scale insects have strong fecundity, and because the vast majority of scale insects are often covered with shells or covered with powdery, cotton and other waxy secretions, it is difficult for general agents to penetrate into the insect body, so the drug resistance is strong, and comprehensive control methods must be adopted

role="Figure brown soft scale and its pests 12Female adult (frontal) 3Female adult (opposite).

1) Strengthen plant quarantine. The transmission of scale insects is mainly spread with the transportation and exchange of seedlings, scion, seeds, fruits, bulbs, etc. Therefore, all the introduction or retrieval of the above-mentioned propagating material must be strictly quarantined.

If scale insects are found, effective measures should be taken immediately to eliminate them.

2) Artificial control. Combined with the pruning of flowers and trees, cut off diseased branches, insect leaves and destroy them in a centralized manner, or brush (scrape) them with brushes, bamboo pieces and other materials.

role="Figure Thrips 1Adult 2Nymph (3) drug control.

The first instar nymph stage (i.e., from the eggs just hatched to the early stage of wax secretion) spray 50% pine borer or 50% malathion emulsion 1000 1200 times, every 7 10 days, spray 2 3 times continuously. When spraying, pay attention to spraying evenly.

4) Pay attention to protecting predators. Avoid the use of pesticides in places where there are large numbers of Australian ladybugs, large red ladybugs, aphid wasps, etc. If pesticides are necessary, systemic insecticides should also be used to reduce the killing of natural enemies.

Scale insects are the most common pests of camellia, often clustering on branches, leaves, and buds. The special mouthparts of adults and nymphs are inserted into the camellia leaves and branch tissues to absorb the juice, causing the branches and leaves to wither, and even the whole plant to die, and can induce disease, which is extremely harmful.

Scale insects are small insects, most of which have waxy secretions. Female and male aliens. The female has no wings, while the male has a pair of membranous forewings and the hindwings are specialized as balance sticks.

Scale insects have a strong reproductive ability and occur in multiple generations a year. The eggs hatch into nymphs, and after a short time of crawling, they form a shell and live in a fixed life. Scale insects have strong drug resistance, and it is difficult for general agents to enter, so it is difficult to prevent and control.

Therefore, once it happens, it is not easy to clean up.

The scale insects that harm camellia mainly include blowing scales, red wax scales and chaff scales.

Blowing scale: female adult body length 5 7 mm, oval, orange-red. Male adults are about 2 mm long and orange-red. The eggs are oblong, orange-yellow at first lay, and then orange-red.

Red wax scale: Female adult body is millimeter long, oblate, purplish-red. The back is raised and covered with a white waxy shell. The male adult is about 1 mm long and has a small, translucent shell. The oval is oval, pale yellow at first birth, purplish-red when hatching.

Adult female is about 2 mm long, round or oval, purplish-red. The shell is about 1 mm long, oblong, grayish-white or grayish-brown. Male adults are pale purple, with elongated shells and grayish-white. Oval or oblong-ovate, lavender.

Blowing scales and red wax scales live on camellia leaf stalks and twigs to absorb sap. The bran scale often adheres to the apical sprouts or the front and back of the leaves, and absorbs nutrients from the epidermis of the leaf sprouts. They use their mouthparts to insert branches and leaves to absorb the sap, causing the branches and leaves to wither yellow, and also excrete more sugar and wax, which is easy to make the camellia complicated with gray-black soot disease, which will cause the death of the whole camellia plant in serious cases.

Blowing scales and chaff scales reproduce for 2 to 3 generations a year, and overwinter on branches and leaves with eggs under fertilized adults or shells. The first generation nymph is born in late April. Hatched nymphs swarm on the back of the leaf and on the tender tips to harm.

The second generation moves to flower buds and branches in July and August. In the third generation, the chaff scale is born in September, and the blowing scale is born in October. The red wax scale reproduces only one generation per year, and hatches in late May, and the peak hatching season is mid-June, when nymphs swarm on the shoots.

Male adults begin to emerge in mid-August and damage the leaves. Female adults are mostly harmful on the branches, fertilized in November and crawl onto the branches for overwintering.

Control methods: 1) In the early stage of hatching of scale insects, before the waxy scale shell is formed, dilute it with 40% oxidized dimethoate emulsion with water 1200 times, spray on the front and back of camellia branches and leaves, spray once every 7 10 days, 2 3 times in a row, and spray evenly to be even. If the shell has already formed, it is difficult to spray it.

2) The shell has been formed, which can be brushed off with a soft brush, pinched to death with fingers, or combined with pruning, cutting off insect branches and leaves, and burning them intensively.

3) Scale insects can be treated with liquor, vinegar and urine. The urine should be stored for half a month and used after it has decomposed. Mix about 60 degrees of liquor with 2 times water. Dip cotton balls in white wine and vinegar and soak them on the scale insects of leaves and branches, and the effect is also very good.