What about the growth of tea plum leaves? pest control of tea plum / 4 insect pests and 3 diseases

As a combination of camellias and plum blossoms, the beauty of Camellia is beyond doubt. Its beautiful leaves, gorgeous colors and charming fragrance are all beloved by people. However, due to some reasons, tea plum will grow insect disease, thus seriously affecting the ornamental, then tea plum leaf worm how to do? The following is the pest control of tea plum selected by the editor. Go in and have a look!

First, what to do with the growing insects in the leaves of tea plum, to determine the pests

Tea plum is very resistant, so it is supposed to be very difficult to get sick and insect pests, but if we do not raise tea plum according to the culture method, it is also normal for tea plum leaves to grow insects. At this time, we can not be in a hurry, but first determine the pests, and then spray for the use of medicine. Generally speaking, there are 7 kinds of diseases and insect pests of tea plum, including 4 insect pests and 3 diseases, specific symptoms and control methods, we go on.

II. Disease and pest control of tea plum

1. Aphids

An insect that infects tea plum, which parasites on leaves and absorbs juice, mainly harming young leaves and stems. Once aphids appear, they are dense and look very scary.

Control methods: when there are a small number of aphids, you can kill them manually, such as picking with needles or brushing them off with tools such as a brush; when there are many aphids, spray them with 2.5% fish rattan essential EC 1200 times.

2. Diamondback moth

One of the diseases and insect pests of tea plum, which usually occurs from June to October. The larvae of the insect will feed on the lower epidermis and mesophyll of the leaves, and in severe cases, only the upper epidermis is left; the adults of the diamondback moth are more harmful, and it can eat up the leaves, leaving only the main veins, seriously affecting the flower bud differentiation, flowering and ornamental of tea plum.

Prevention and control methods: in the initial stage, spray 50% fenitrothion EC 800x liquid, or use biological preparation Bt water agent 1000 times liquid spray in cloudy days, the prevention and control effect is good. If it is in winter, you can dig the cocoon in the soil around the tea plum, break it or knock the cocoon off the tree trunk.

3. Scale insects

Another pest of tea plum, which mainly harms young leaves and sucks the juice of flowers. Symptoms of damage: tea plum leaves from green to gray-green, and finally to yellow, which is also one of the reasons for tea plum leaves yellowing; in serious cases, the branches and leaves are covered with shell insects, resulting in the death of the whole plant.

Control methods: when there are few shell insects, rinse with water, or wipe the diseased plants with liquor, vinegar, alcohol, washing powder, etc., have a certain curative effect; scale insects for a long time, use 550% marathon, 40% dimethoate 0.1% solution to kill in turn, a few times will be effective.

4. Longicorn beetles

The insect is divided into tea longicorn beetles and tea black tarsal longicorn beetles, both of which are harmful to tea plum. The former mainly eats the roots of tea plum and the branches near the ground, while the latter damages the branches from the bottom up, causing the branches to swell and wither and die.

Prevention and control methods: after the discovery of longicorn beetles, adults can be caught manually, or 800 times of 50% fenitrothion EC can be sprayed, or green green buds can be sprayed to kill adults.

5. Anthrax

This disease is one of the common diseases of tea plum, which usually occurs from June to July and mainly harms adult leaves. Symptoms of the disease: water-stained green-brown disease spots appeared on the edge and tip of tea plum leaves, and then expanded into a layer of small black spots arranged in irregular stripes to spread throughout the leaves, resulting in the loss of tea plum leaves.

Prevention and treatment methods: find the above symptoms, remove the diseased leaves and burn them in time to reduce the source of the disease; at the initial stage of the disease, spray 2-3 times with anthrax Fumei or 75% chlorothalonil 600 times, or spray 1-2 times with 12% green copper emulsion during budding and leaf development.

6. Leaf spot

One of the main diseases of tea plum, in the environment of high temperature, high humidity and poor ventilation, the leaves of tea plum are easy to be infected with leaf spot disease. Symptoms: the leaves appear yellowish and reddish yellow spots, and then enlarged into a round or oval shape.

Prevention and treatment methods: if the above disease occurs and a small number of diseased leaves are found, it should be removed and burned in time to reduce the source of the disease; when the disease is serious, it can be prevented and treated with 1000-1500 times of demulsified oil, spraying 25% 2-3 times every 7-15 days, and it will be effective after a few times.

7. Coal pollution disease

One of the diseases and insect pests of tea plum, it generally occurs in the environment of high temperature, high humidity and poor ventilation. Symptoms: the leaves and branches of Camellia oleifera are covered with a layer of black soot, which affects the photosynthesis and respiration of the leaves, causing poor growth and early defoliation.

Prevention and treatment methods: when the above symptoms are found, 50% carbendazim 600 times solution or 70% mancozeb 600 times solution is sprayed in turn, and the effect can be seen after 2-3 times.

What about the long insects of triangular plum? pest control of triangular plum / 2 insect pests and 3 diseases

Triangular plum, a beautiful plant, is kept at home by many flower friends. On the Internet, many people who raise triangular plums say that they rarely grow worms, but in fact, they are talking about veterans! If you are a novice, perhaps because some aspects of the work is not in place, bugs will come to the door, then triangle plum long bugs how to do? The following is the pest control of Triangle Plum sorted out by Xiaobian. Let's go and have a look.

First, triangular plum long worm, spray with medicine

Generally speaking, triangular plum has a lot of worms, but if we do not raise it according to the breeding method of triangular plum, or if it is not operated properly, it will grow worms and get sick. Flower friends must be very worried! As for the triangle plum long bug how to do, in fact, it is very simple, we first determine which kind of bug, and then solve the problem. The following is the pest control of Triangle Plum. There are 2 pests and 3 diseases in total. Let's move on.

II. Pest control of Prunus mume

1. Scale insects

The shell insect, one of the pests of triangulated plum, is basically the bug that you see on triangulated plum. It is understood that the insect often appears on the leaves and mainly harms the tender leaves and sucks the sap of flowers.

The reason for the emergence of scale insects: in the environment of poor light, poor ventilation, high temperature and high humidity, many kinds of shell insects are easy to occur.

Symptoms of infringement: there will be many small white protuberances on the triangular plum leaves, and the color will change from green to grayish green, and finally to yellow, which is also one of the reasons why the triangular plum leaves turn yellow. When the pest is serious, the branches and leaves of Prunus mume are covered with shell insects, resulting in the death of the whole plant.

Solution: when there are few shell insects, they can be scraped directly or picked out with toothpicks; when there are too many shell insects, they can be sprayed with 45% malathion EC 1000 times and 40% dimethoate 0.1% solution.

2. Aphids

In addition to shell insects, aphids are also pests of triangulated plums, and they have a high probability of occurrence. If you see bugs with transparent wings and dark colors, they are basically aphids.

Symptoms of damage: aphids mainly harm the tender leaves and stems of triangular plum, especially when the leaves expand, aphids will parasitize on the leaves and absorb juice. Once aphids appear, they are dense and look very scary.

Flower friend's method: if it is aphids, you can spray some laundry powder, the concentration is thicker than usual, once or twice a day, two or three days effective.

Expert's method: when finding aphid attack, can use dichlorvos 1200 times aqueous solution to kill, or kill with tobacco leaf water: 50 grams of tobacco leaf add 5 kilograms of water, boil it.

3. Leaf spot

One of the main diseases of Prunus mume, which usually occurs when the weather turns cold at the end of autumn, harms the leaves of the plant. Symptoms: in the early stage, the leaves appear yellow-brown disease spots, surrounded by yellowish-green halos; in the middle stage, the disease spots are enlarged in a round or oval shape, with dark brown edges; in the later stage, small black dots appear on the disease spots, at which time the leaves will dry up and fall off.

Prevention and treatment: in the early stage of the disease, we can apply Dakening cream ointment on the leaves of triangular plum disease, and cut off the branches that occur more often. When the disease is serious, it can be sprayed with 50% carbendazim wet powder 500 times, once every 7-10 days, 3 times 4 times in a row, and the effect is very good.

4. Brown spot

Another disease of triangular plum, which mainly harms the leaves of triangular plum. Symptoms: yellowish brown to light brown spots with a diameter of 0.1-0.5cm were formed on the diseased leaves.

Prevention and treatment: when the above symptoms are found, remove the diseased leaves in time and burn them centrally to reduce the source of the disease. At the initial stage of the disease, spray 70% manganese zinc wettable powder 400 times, once every 10 days, 3 times 4 times in a row, the prevention and control effect is good.

5. Shoot blight

The disease harms the buds, leaves, shoots and branches of Prunus mume, thus causing shoot withering. Moreover, shoot blight can also cause rotting of roots and stems, blue change of sapwood and death of pine trees when it is serious.

Prevention and control methods: timely removal of dead branches, diseased leaves, pay attention to ventilation, in order to reduce the spread of the disease. When the disease occurs, it can be prevented and treated with dimethoate, topiramate and other solutions.

With regard to the pest control of triangular plum, the editor has introduced it here. I believe that if you encounter the long worm or illness of triangular plum again, you should know how to do it! Generally speaking, triangular plum is rarely disturbed by diseases and insect pests, so in order to avoid unnecessary trouble, it is better to take good care of it. Finally, may everyone's triangular plum blossom with beautiful flowers.

What about the camellias? control of diseases and insect pests of camellias / 4 insect pests and 3 diseases

As one of the top ten famous flowers in China, the beauty of camellia is beyond doubt. Its beautiful flowers, bright colors and charming fragrance are all beloved by people. However, because it is not maintained according to the culture method of camellias, the plant will grow insects and get sick, thus seriously affecting the ornamental, what about the camellia worms? The following is the pest control of camellias selected by the editor. Go in and have a look!

First, what to do with the camellia worms to determine the pests

The beauty of camellias lies in its beautiful appearance. If the appearance is destroyed by pests and diseases, it is distressing, then how to deal with camellias? At this point, we should identify insect pests and then spray them against the use of medicine. Generally speaking, there are 7 kinds of diseases and insect pests of camellias, including 4 insect pests and 3 diseases, specific symptoms and control methods, we go on.

II. Disease and pest control of camellias

(1) insect pests of camellias

1. Red spider

One of the main pests of camellias, it mainly harms the back of leaves and survives by sucking the sap of camellias leaves. Symptoms of damage: the plant will become malnourished and may show symptoms of yellowing or even shedding of camellia leaves.

Control method: when the red spider is found, the whole camellia plant should be thoroughly washed with large water, and then 2000 times of triclofenac EC should be sprayed, which can be effective several times in a row.

2. Aphids

An insect that infects camellias, which parasites on leaves and absorbs juice, mainly harming young leaves and stems. Once aphids appear, they are dense and look very scary. Not only that, honeydew secreted by aphids can attract ants and cause soot or other fungal diseases.

Control methods: when there are a small number of aphids, you can kill them manually, such as picking with needles or brushing them off with tools such as a brush; when there are many aphids, spray them with 2.5% fish rattan essential EC 1200 times.

3. Scale insects

Another insect pest of camellias, it mainly harms young leaves and sucks the juice of flowers. Symptoms of damage: Camellia leaves from green to gray-green, and finally to yellow, serious, the branches and leaves are covered with shell insects, resulting in the whole plant withered.

Control methods: when there are few shell insects, rinse with water, or wipe the diseased plants with liquor, vinegar, alcohol, washing powder, etc., have a certain curative effect; scale insects for a long time, use 550% marathon, 40% dimethoate 0.1% solution to kill in turn, a few times will be effective.

4. Leaf roll moth

The insect has a small body and is one of the main pests that invade camellias. its larvae bite the new buds, tender leaves and flower buds of the plant, leaving only the epidermis in a reticulate shape, and make the leaves curl longitudinally and continuously harm the plants in the hidden leaves, seriously affecting the growth and flowering of the plants.

Control methods: when the leaf roll moth is small, the rolled leaves can be removed manually and the insect body can be pinched to death; in the larval stage, 1000 phoxim can be sprayed at night; in adults, sugar and vinegar solution (5 parts of sugar, 5 parts of wine, 80 parts of water) can be used to trap and kill. Harm.

(2) Diseases of camellias

1. Anthrax

This disease is one of the common diseases of camellia, which usually occurs on the leaves of flower seedlings from June to July. Symptoms: watery green-brown disease spots appeared on the edge of camellia leaves, and then expanded into a layer of small black spots arranged in irregular large stripes spread throughout the leaves, and finally caused the leaves to fall off.

Prevention and treatment methods: when the above diseases are found, the diseased leaves are removed and burned in time to reduce the source of the disease; at the initial stage of the disease, 70% methyl topiramate wettable powder 1000Mel 1500 times can be sprayed for prevention and treatment.

2. Leaf spot

One of the main diseases of camellias, in the environment of high temperature, high humidity and poor ventilation, the leaves of camellias are easy to be infected with leaf spot. Symptoms: the leaves appear light yellow and reddish yellow spots, and then expand into a round or oval shape; if the environment is relatively humid, black granular substances may appear on the disease spots, and the leaves will dry up and fall off in the later stage.

Prevention and control methods: find a small number of diseased leaves, remove and burn them in time, in order to reduce the source of the disease; in severe cases, use 1000-1500 times of deemulsified oil for prevention and treatment, spray 25% 2-3 times every 7-15 days, and it will be effective after several times.

3. Bituminous coal disease

The disease can damage the branches and leaves of camellias, especially on the leaves. At the initial stage of the disease, the camellia leaves appeared soot-like mildew spots, and then gradually expanded and connected to each other into pieces, so that most of the plants were covered by soot-like mildew layer, seriously affecting plant photosynthesis and respiration, resulting in the phenomenon of camellia leaves.

Prevention and treatment: when the above diseases are found, Baume 0.3 degree stone sulfur mixture can be sprayed once every 10 cents for 15 days, for a total of 3-4 times. In addition, 50% topazine wettable powder can also be sprayed 500 times, 7 Mel once every 10 days, and the effect can be seen after spraying 3 times.