What to do when the orchid grows, the pest control of the orchid / 4 insect pests and 4 diseases

Crane orchid, a very beautiful plant, has green leaves and flowers like flying cranes. They are so beautiful that they are often potted at home. However, due to improper maintenance and other problems, the orchid will grow insect disease, seriously affecting its ornamental value, then how to do? The following is the pest control of Clematis paniculata, which is very detailed. You must take a look at it.

First, the orchid worms are sprayed with medicine

As a good product of indoor farming, the beauty of the orchid is beyond doubt, but if we do not follow the breeding method of the orchid, it is very vulnerable to insects and diseases. As for what to do when the orchid grows, it is actually very simple. We first determine which kind of bug it is, and then aim at solving the problem. The following is the pest control of Clematis paniculata. There are 4 pests and 4 diseases in total. Let's move on.

2. Disease and pest control of orchid (1) four insect pests of Cymbidium

1. Coconut concave scale

Harmful site: the leaves of Magnolia lanceolata gather on the back of the leaves to suck juice.

Symptoms of damage: yellow-green spots appear on the front of the leaves, which will affect the growth and development of the whole plant in serious cases.

Prevention and control methods: after finding the branches and leaves damaged by insects, we should cut off and burn them in time to reduce the source of the disease. In addition, 1000-fold solution of 90% trichlorfon can be evenly sprayed for control.

2. Snails

Harmful site: flowers and tender leaves of Clematis paniculata.

Time of occurrence: as one of the main pests of the orchid, snails usually appear in the evening or after heavy rain. They will gnaw on the flowers and tender leaves of the orchid, causing serious harm to its appearance.

Prevention and control methods: to remove withered branches and leaves in time, once diseases and insects are found, they should be artificially killed, or 50% sulfuric acid and 80% dichlorvos should be sprayed for drug control.

3. Beetles

Harmful site: the young part of the root of the orchid, causing the residual root to be cut off and so on.

Symptoms of damage: the leaves turn yellow and the plants become thinner, which in severe cases can lead to the death of seedlings.

Prevention and control method: after finding the beetle, we can shake the plant in the morning or evening to make the beetle fall and concentrate on killing. In addition, 1000-1500 times of 50% marathon liquid can also be sprayed for prevention and control.

4. Drillworms

Harmful parts: tender shoots and buds of Clematis paniculata.

Symptoms of damage: as one of the main insect pests of Cymbidium, the heart worm often eats its larvae into the tender stem of the orchid, resulting in withered seedlings.

Control method: when it is found that drillworm larvae can be sprayed with 4.5% cypermethrin EC 50 ml mixed with 60 kg of water, once a week, 2-3 times continuously. If it is an adult, the plant is a threat, so we should pay attention to it.

(2) four diseases of Cymbidium

5. Brown spot

The cause of the disease: the disease is one of the diseases that the orchid pays attention to. It generally spreads by means of watering and artificial operation, and often infects and harms the leaves with weak growth and wounds.

Symptoms: the leaves appear brown spots, there will be yellow halos around; then slowly expand, the spots become irregular, the edges will become reddish brown; in the later stage, the spots become black, and black grains will appear at the same time.

Prevention and treatment: when the above diseases are found, spray the mixture of 1000 times pentachloronitrobenzene fungicide and 1500 times liquid nicotinine insecticides immediately and spray several times in succession.

6. Anthrax

Cause of the disease: the disease is mainly in the spring, with the help of wind, rain and insect transmission, invading from the wound.

Symptoms: orchid leaves appear round or subcircular disease spots, the edge is reddish brown thin lines, the center is grayish brown. Old leaves usually develop in the first half of April and new leaves in August in the second half of the year.

Prevention and treatment: when diseased leaves are found, they can be cut off in time, and they can also be burned or buried deeply after removal to reduce the source of the disease. The wound should be smeared or sprayed with 70% copper oxychloride suspension 1000 times or 25% 100g emulsion, which should be sprayed in turn to prevent drug resistance.

7. Spot blight

Disease cause: one of the diseases of Magnolia paniculata, it mainly appears in spring, conidia escape from conidia for primary infection and re-infection, so that the disease continues to expand, plant growth decline and basin soil alkali prone to disease.

Symptoms: the leaves of Clematis paniculata will appear gray and withered spots at the beginning, and the edge is a brown-purple coil with many small black spots on it.

Prevention and treatment: cut off the diseased leaves, and then apply 30% basic copper sulfate suspension to the wound. When the above symptoms are found, spray 30% basic copper sulfate suspension 400 times or 47% plus Ruinong wettable powder 800 times, spray once every 10 days, continuous prevention and treatment for 2 to 3 times.

8. Grey mold

The cause of the disease: with the help of wind, rain and insects, the disease invades the disease from the wound. If the planting is too dense, the humidity is high, the light is insufficient or nitrogen fertilizer is applied, the orchid is easy to suffer from gray mold.

Disease symptoms: the leaves appear dark green to dark yellow-white spots, showing water stains, the disease spots expand rapidly under the condition of high temperature and high humidity, showing brown irregular shape, so that large areas rot and grow gray mildew layer.

Prevention and treatment: when the above symptoms are found, spray with 500 times of 80% dichlorothalonil wettable powder or 75% chlorothalonil.

On the pest control of the orchid, the editor has introduced it here. I believe that if you encounter the orchid worm or get sick again, you should know how to do it! Generally speaking, the orchid is easy to get sick, so for the sake of unnecessary trouble, we'd better take good care of it. Otherwise, these bad things will come to us one after another, which will be troublesome to death! Finally, I wish everyone's crane orchid can bloom beautiful flowers.

Control of Diseases and insect pests of Cymbidium during flowering period

Crane orchid, also known as Paradise Bird Flower, is native to South Africa. After flowering, it looks like a crane, so it is named crane orchid. Next, let's take a look at the flowering period and the knowledge of disease and pest control of the orchid.

The florescence of Magnolia:

Generally speaking, the breeding period of Magnolia is very long. It is usually sown in March and can only be planted two years later. After planting, it can be planted separately. Once it is ripe, it will blossom every winter, and the florescence is very long, which can last until June of the following year. If artificial pollination is carried out during flowering, we can also collect and dry for a new round of sowing when the seeds are withered.

Pest control of Clematis paniculata:

1. Grey spot of Clematis orchid

The gray spot of Clematis paniculata mainly occurs on the leaves, the disease spot is black-brown spot in the initial stage, multiple disease spots are connected into one piece, or a single disease spot expands into an irregular shape, with grayish brown inside, and the edge is dark brown; in the later stage, the disease spot is dry and black grains appear on the disease spot in the wet environment.

Solution: clean up the diseased and disabled tissue in time, avoid causing plant wounds in maintenance, strengthen ventilation and light transmission, increase foliar spray, and keep the foliar surface clean and moist. At the initial stage of the disease, 800 times solution was sprayed with ultra-broad-spectrum fungicides.

2. Anthracnose of Hewang orchid

Colletotrichum gloeosporioides is caused by Alternaria przewalskii, which belongs to half-known fungi. The pathogen overwintered with mycelium on diseased leaves and remnants, and invaded from the wound by wind, rain and insects in the next spring. Old leaves usually develop in early April, while new leaves begin to occur in August. The disease is easy to occur when the humidity is high, and the incidence of stagnant water in the basin and poor ventilation is aggravated. The disease is mainly damaged leaves, the disease spot is round or nearly round, the edge is reddish brown thin line, the center is gray brown spreading, about 6 × 4 cm in size, and the conidium disc shows small black grains when it matures. Generally speaking, the old leaves fall ill in the first half of the year and the new leaves in the second half of the year.

Solution: it is found that the diseased leaves are cut off from the edge, and the diseased leaves can also be removed, burned or buried deeply. Spray 25% carbendazim wettable powder or 40% polysulfide gel suspension, 70% copper oxychloride suspension 1000 times, 25% carbendan 500 times, or 75% thiophanate methyl 1000 times.

3. Botrytis cinerea

Solution: spray water to the plant as little as possible, increase the application of potash fertilizer to ensure a good ventilated environment; in the initial stage of the disease, use 75% chlorothalonil wettable powder 500 times liquid spray every 10 days, a total of 2 times 3 times.

4. Crane orchid blight

Attention should be paid to soil disinfection in the prevention and control of orchid blight, plant spacing should not be too small, planting should not be too deep, old leaves should be cut off in time, ventilation and nutrition management should be strengthened, and plant growth should be increased.

Solution: immediately after the diseased plant was found, the soil was disinfected locally, and Jinggangmycin was sprayed regularly during the growing period to achieve the purpose of early prevention and control.

5. Scale insects

Scale insect damage is easy to occur when indoor cultivation is not well ventilated, and it is generally parasitic on the stem, leaf and inflorescence of Cymbidium. The adults and nymphs suck the plant juice with stinging mouthparts, making the leaves curl, yellowing and aging, affecting the plant growth, and in serious cases, withered and fallen leaves, until the death of the whole plant; at the same time, when the shell insect is infected, a large amount of honeydew is discharged in the wound, which pollutes the leaves and causes coal fouling, and a layer of black mold is produced on the leaves, which affects the normal growth and flowering of the orchid.

Solution: shortly after the nymphs hatch, before the waxy shell is formed, the pesticides used can be 40% dimethoate 1000 times, or 50% trichlorfon 250 times, or 80% dichlorvos EC 1000 times 1500 times, or 2.5% deltamethrin EC 2000 times 2500 times. Generally, it is better to spray 1-3 times continuously, each time at an interval of 7-10 days. In addition, special attention should be paid to the fact that shell insects are easy to develop resistance to drugs, and it is necessary to master the concentration of pesticides and use them alternately.

6. Beetles

The beetle larvae are called grubs, which engulf the young part of the roots of the orchid in the ground, resulting in residual roots and root breakage. When the harm is light, the growth of the seedlings is blocked, the leaves turn yellow or the plants are thin, and when the damage is serious, the seedlings wither and die.

Solution: in the adult occurrence period. Mix sugar, vinegar, liquor and water into a liquid according to the proportion of 1, 3, 2, 20, and add a little pesticide liquid. Put it in a can, hang it on the planting ground, and trap it. When insect pests occur, directly spray 50% marathon 1000-1500 times liquid to control.

7. Drillworms

The orchid borer, also known as the orchid borer, is specially harmful to tender shoots and buds, and there are dung shavings in the wormhole, which is extremely harmful. The main way of damage is that the larvae eat into the stem of Cymbidium paniculata, destroy the growing point and cause withered seedlings.

Solution: use 4.5% cypermethrin EC 50 ml, or 20% fenvalerate EC 50 ml, spray with water 60 kg, once a week, spray 2 times 3 times.

8. Snails

Snails often hide in dark and wet places during the day and come out at night, especially in the early morning or evening after heavy rain, which affects the ornamental value of Crane orchid.

Solution: use 1000-1500 times solution such as 50% phoxim and 80% dichlorvos, spray once every 5-7 days, 3 times continuously.

The orchid is a kind of ornamental flower that we like very much, the flower shape is peculiar, the leaf is broad and green, give a person a kind of fresh and comfortable feeling, use to decorate the home will bring very good effect, but the maintenance of the orchid needs to pay attention to the problem of diseases and insect pests, so as not to affect the ornamental effect of the orchid.

Prevention and control of diseases and insect pests of Crane orchid

The leaves of the orchid are beautiful and have a strange flower shape, which can give people a feeling of freshness and elegance no matter where they are arranged. The maintenance of the orchid can not ignore the prevention and control of diseases and insect pests, otherwise it will affect the ornamental effect of the layout of the orchid:

Pest control of Clematis paniculata:

1. Grey spot of Clematis orchid

The gray spot of Clematis paniculata mainly occurs on the leaves, the disease spot is black-brown spot in the initial stage, multiple disease spots are connected into one piece, or a single disease spot expands into an irregular shape, with grayish brown inside, and the edge is dark brown; in the later stage, the disease spot is dry and black grains appear on the disease spot in the wet environment.

Solution: clean up the diseased and disabled tissue in time, avoid causing plant wounds in maintenance, strengthen ventilation and light transmission, increase foliar spray, and keep the foliar surface clean and moist. At the initial stage of the disease, 800 times solution was sprayed with ultra-broad-spectrum fungicides.

2. Anthracnose of Hewang orchid

Colletotrichum gloeosporioides is caused by Alternaria przewalskii, which belongs to half-known fungi. The pathogen overwintered with mycelium on diseased leaves and remnants, and invaded from the wound by wind, rain and insects in the next spring. Old leaves usually develop in early April, while new leaves begin to occur in August. The disease is easy to occur when the humidity is high, and the incidence of stagnant water in the basin and poor ventilation is aggravated. The disease is mainly damaged leaves, the disease spot is round or nearly round, the edge is reddish brown thin line, the center is gray brown spreading, about 6 × 4 cm in size, and the conidium disc shows small black grains when it matures. Generally speaking, the old leaves fall ill in the first half of the year and the new leaves in the second half of the year.

Solution: it is found that the diseased leaves are cut off from the edge, and the diseased leaves can also be removed, burned or buried deeply. Spray 25% carbendazim wettable powder or 40% polysulfide gel suspension, 70% copper oxychloride suspension 1000 times, 25% carbendan 500 times, or 75% thiophanate methyl 1000 times.

3. Botrytis cinerea

Solution: spray water to the plant as little as possible, increase the application of potash fertilizer to ensure a good ventilated environment; in the initial stage of the disease, use 75% chlorothalonil wettable powder 500 times liquid spray every 10 days, a total of 2 times 3 times.

4. Crane orchid blight

Attention should be paid to soil disinfection in the prevention and control of orchid blight, plant spacing should not be too small, planting should not be too deep, old leaves should be cut off in time, ventilation and nutrition management should be strengthened, and plant growth should be increased.

Solution: immediately after the diseased plant was found, the soil was disinfected locally, and Jinggangmycin was sprayed regularly during the growing period to achieve the purpose of early prevention and control.

5. Scale insects

Scale insect damage is easy to occur when indoor cultivation is not well ventilated, and it is generally parasitic on the stem, leaf and inflorescence of Cymbidium. The adults and nymphs suck the plant juice with stinging mouthparts, making the leaves curl, yellowing and aging, affecting the plant growth, and in serious cases, withered and fallen leaves, until the death of the whole plant; at the same time, when the shell insect is infected, a large amount of honeydew is discharged in the wound, which pollutes the leaves and causes coal fouling, and a layer of black mold is produced on the leaves, which affects the normal growth and flowering of the orchid.

Solution: shortly after the nymphs hatch, before the waxy shell is formed, the pesticides used can be 40% dimethoate 1000 times, or 50% trichlorfon 250 times, or 80% dichlorvos EC 1000 times 1500 times, or 2.5% deltamethrin EC 2000 times 2500 times. Generally, it is better to spray 1-3 times continuously, each time at an interval of 7-10 days. In addition, special attention should be paid to the fact that shell insects are easy to develop resistance to drugs, and it is necessary to master the concentration of pesticides and use them alternately.

6. Beetles

The beetle larvae are called grubs, which engulf the young part of the roots of the orchid in the ground, resulting in residual roots and root breakage. When the harm is light, the growth of the seedlings is blocked, the leaves turn yellow or the plants are thin, and when the damage is serious, the seedlings wither and die.

Solution: in the adult occurrence period. Mix sugar, vinegar, liquor and water into a liquid according to the proportion of 1, 3, 2, 20, and add a little pesticide liquid. Put it in a can, hang it on the planting ground, and trap it. When insect pests occur, directly spray 50% marathon 1000-1500 times liquid to control.

7. Drillworms

The orchid borer, also known as the orchid borer, is specially harmful to tender shoots and buds, and there are dung shavings in the wormhole, which is extremely harmful. The main way of damage is that the larvae eat into the stem of Cymbidium paniculata, destroy the growing point and cause withered seedlings.

Solution: use 4.5% cypermethrin EC 50 ml, or 20% fenvalerate EC 50 ml, spray with water 60 kg, once a week, spray 2 times 3 times.

8. Snails

Snails often hide in dark and wet places during the day and come out at night, especially in the early morning or evening after heavy rain, which affects the ornamental value of Crane orchid.

Solution: use 1000-1500 times solution such as 50% phoxim and 80% dichlorvos, spray once every 5-7 days, 3 times continuously.

The orchid is a kind of ornamental flower that we like very much, the flower shape is peculiar, the leaf is broad and green, give a person a kind of fresh and comfortable feeling, use to decorate the home will bring very good effect, but the maintenance of the orchid needs to pay attention to the problem of diseases and insect pests, so as not to affect the ornamental effect of the orchid.