What should I do if Phalaenopsis has iron disease?

1) Disease 1 Anthrax also known as brown spot disease, mainly harms orchid leaves, and its symptoms are oval lesions on the leaf surface, from small to large, from yellow to black, and in severe cases, it rots in a row. Most of them occur during the rainy season, scattering spores and infecting other leaves. From July to August in Guangzhou, the humidity is above 80, and the incidence is most prevalent when the temperature is hot and muggy.

When found, the diseased leaves should be cut off immediately, burned in a concentrated manner, the surrounding environment should be cleaned up, ventilation should be strengthened, and the water moisture should be reduced, and then sprayed with carbendazim 800 times, or anthrax fome 600 times, or methyl tobuzine 800 times, or chlorothalonil 500 times. Spray 1 time every 10 to 15 days, 2-3 times in a row, and it can be suppressed. 2 Soft rot is also known as bacterial brown spot disease.

It mostly occurs in April and May, when the rainwater carries bacteria into the heart of the young shoots, and small water-stained spots appear, turning from brown to black, and then stinky and dying. When it happens, it should be moved to a ventilated and less humid place in time, and suck out the moisture of the bud core with a cotton wool, and spray it with 1 Bordeaux solution, or 600 times of zebsen zinc, or 500 times of chlorothalonil, once every 10 to 15 days, and spray 3 times in a row. 3 Root rot mostly occurs in high temperature and humidity.

When the potting soil is waterlogged, the soil is compacted, acidic, and the fertilization is too thick, Fusarium takes the opportunity to invade the roots, causing the roots to gradually rot, and the plants cannot absorb nutrients and die. If found in the early stage, you should quickly change the pot, pour out all the planting materials, cut off the rotten roots and leaves, soak the whole orchid with 0 1 potassium permanganate solution for about 15 minutes, take it out, wash and dry, and then dilute the water 3000 times with "promote root growth", soak it for 30 minutes and dry it, replant it in the updated planting material, and place it in a ventilated place to gradually restore its vitality.

1. This disease occurs more often than at high temperatures, and its dispersion is mostly due to wind blowing spores and watering splashes, so try to avoid watering at high temperatures.

2. Do not dry the pot for a long time. Remove and burn diseased leaves in a timely manner.

If it is not completely broken, it can be wrapped in a plastic bag, and if it is completely broken, then there is no way to do phalaenopsis. During this period, phosphorus and potassium fertilizers were mainly applied outside the roots, and micro-fertilizers such as boron, zinc and iron were appropriately applied.

Phalaenopsis gray mold symptom identification It mainly harms the flowers, peduncles, leaves, sepals and other positions of orchids. When the leaves are damaged, brown lesions will appear, which are unevenly distributed on the back of the leaves, which will affect the photosynthesis of the leaves.

Hu Tielan has iron head disease, what should I do We can go to the flower market to consult what method the flower grower should use to treat his iron head disease.

The easiest way to deal with rust on flowers is to remove the rust-infected leaves in time, then keep the environment properly dry, well ventilated and well-lit, through soil sterilization and spraying fungicides**.

Don't think that phalaenopsis will bloom normally after it grows buds. In fact, if the two steps are not done well, Phalaenopsis not only does not bloom, but also is easy to get sick.

Because this flower bud of phalaenopsis has just grown, it is very insect-friendly, because its bud tip is very tender, and small pests like it very much, especially in the summer when the temperature is high, pests are overflowing, so after the flower buds grow, it must be treated with insect control.

The simplest and most effective way to do this is with this dinotefuran. It is very simple and convenient to use. We just need to take out a pill, open it and sprinkle it directly on the surface of this pot. This not only protects against insects, but also prevents the wound from rotting after the insect bite, which can lead to bacterial infection and cause disease.

Therefore, whether you raise phalaenopsis or orchids, when the buds and arrows have grown, they are the most attractive insects. You have to take precautions, and the same goes for other flowers.

What are the common diseases of phalaenopsis? 1. Anthranose: Phalaenopsis is mostly infected with anthrax because the environment provided is too humid and the ventilation environment is too poor.

Once infected, there will be small spots on the leaves, which will gradually expand into black-brown or yellow-brown lesions. After discovery, it is necessary to treat it in time, ventilate more, strengthen fertilizer and water management, improve the growth environment, and improve disease resistance. In addition, it is necessary to spray the drug, the drug is mancozeb, once a week, spraying two or three times can be effective.

2. Botrytis cinerea: During the management period, the environmental temperature of the plant is too low and too humid to be infected with gray mold, and the flowers are vulnerable to damage when the disease occurs. In the early stage, the flowers and sepals are prone to water-stained spots, and in the later stage, the spots will enlarge and appear as round patches, and in severe cases, they will fall flowers.

After discovering it, ventilate it more and let it bask in the sun more. Also cut off diseased flowers to avoid infection. In the later stage, Sukrin should be sprayed, once every ten days, and two or three times will be effective.

3. Soft rot: This disease mostly occurs in high temperature and humid environment, harming the leaves of plants. There will be transparent spots on the leaves, and the leaves will rot in the later stage, which is harmful and spreads quickly, so it is necessary to treat them as soon as possible.

The moisture should be controlled, and the spray should be sprayed. The drug can be treated with antibacterial or polyantimycin, sprayed once every ten days, and can be controlled by two or three times. 4. Brown spot disease:

Brown spot disease also occurs in the season of high temperature and high humidity, and there will be brown irregular lesions on the leaves at the onset of the disease, which will cause great damage to the seedlings, and the leaves of the old plants will also yellowish and dry up when they are serious. Polyantimycin should also be sprayed at the time of treatment, once every ten days, and sprayed two or three times to control it. I see that your Phalaenopsis situation is like having anthrax, and you can treat it in time according to the above ** method.

One isBacterial diseases. Common symptoms include sap secretion and decay, which are usually caused by overwatering or through contact with insects or plants. Special attention should be paid to the ventilation of the greenhouse, and the temperature should be adjusted appropriately.

The second isBrown rot. At first, it produces light spots on the body or leaves, and then gradually turns dark brown and wrinkles. Brown rot is easy to occur in the environment of high air humidity, if there is an orchid plant found to be diseased, it is necessary to stop watering, and cut off the diseased part, and apply fungicidal drugs, if the disease is serious or there is a doubt about the expansion of the disease, the disease can be removed or isolated.

Excision, ventilation, keep dry and prevent spread.

These phalaenopsis orchids seem to be suffering from bacterial soft rot, bacterial brown ban, respectivelyAnthrax, white silk disease, etc. Friends may wish to refer to the following for comparison- Phalaenopsis common disease symptoms -

1..Bacterial soft rot begins with water-soaked spots on leaves and rhizomes and rapidly expands into light brown rot spots. The pathogenic bacteria invade from the dorsal part of the leaf, and the leaf surface appears yellow lesions; If the pathogenic bacteria invade from the rhizome, the whole boil will quickly turn yellow.

The rotting roots have a foul smell, the infected tissues rot, and a gray-brown sticky substance that falls over and ulcerates when touched. Under dry conditions, the diseased part gradually loses water and dries out, taking on the form of thin paper.

2.Bacterial brown spot disease mainly targets leaves. When the leaves are infected, light brown water-stained spots first appear, then expand into brown, dark brown, or black irregular dimpled spots with a distinct yellow halo around them.

Lesions can merge with each other to form large plaques, causing decay and death. When the climate and conditions are not suitable, the lesions stop expanding and dry up, and sometimes the lesions are perforated.

3.Anthrax mainly targets the leaves. At first, it is a small round spot of pale yellow-green, and gradually expands into a black-brown spot, and the adjacent lesions merge to form an irregular large lesion.

The periphery of the lesion is black-brown, the middle is gray-brown, and obvious ring stripes can be seen, and small black spots are born on the lesion, that is, conidia. It generally occurs in summer.

4.White silk disease mainly targets the rhizomes. Yellow-brown spots and markings first grow on the rhizome, which gradually expand and decay, and the leaves die and fall off.

The decay of the diseased part starts from the epidermis and progresses, causing the rhizome to overflow. When the humidity is high, the diseased part produces white hyphae, and then produces small black sclerotia. It often occurs during the rainy season to early autumn.

5.Blight can occur in all parts of the plant, but the leaves and rhizomes are slightly more affected. At first, it is a water-soaked brown spot, which expands to form a rotten lesion, black-brown, yellowish around, and some of the rot has a white mold layer.

When the weather is dry, the lesions are dry and black-brown in the form of tissue paper. It generally occurs in spring and autumn.

6.Leaf spot disease mainly targets the leaves. The first small yellowish spots are seen, and gradually expand into yellow-brown markings with unclear edges, and a black mold layer can be seen on the dorsal surface of the diseased leaves when the humidity is high. It can occur all year round.

7.Pyoriasis is mainly aimed at flowers. At the beginning of the disease, the petals appear lighter and browner along the veins, and in severe cases, the veins are water-soaked.

The leaf symptoms are milder than those of the flowers, and sometimes it is difficult to see. The pathogen was infected by a mixture of two viruses, the national orchid mosaic virus CYMV and the tooth tongue rot bad spot virus ORSV.

1) Leaf spot disease: black dots appear in the early stage of the infected leaves, and there are water-stained yellow circles around them, and then they become round or oval lesions, which are mostly caused by high humidity. Prevention and control methods:

Improve ventilation conditions, reduce humidity, and immediately cut off diseased leaves, and spray 55% carbendazim 800 times solution or 1% Bordeaux solution. (2) In the early stage of soft rot, water-stained green spots appear at the leaf ends, as if they were scalded by hot water, and the leaf tissues are filled with water, rot, and accompanied by foul smell. Prevention and control methods:

As soon as it appears, the diseased leaves are immediately cut off, and the wounds are sprinkled with charcoal powder or plastered with chlorothalonil powder for disinfection, and then sprayed with 1% Bordeaux liquid or 800 to 1000 times the liquid that can be killed. (3) Stem rot often begins at the base of the stem, and then spreads to the roots and leaves, and the whole plant dies in severe cases. Prevention and control methods:

When the disease is found, stop watering immediately, let the sun shine on the plant, and spray with 600 times of zeb zinc or 800 times of methyl tobuzin. (4) Brown rot begins to occur from the heart of the plant (growth point), and gradually the whole plant turns black, and the mesophyll tissue becomes paste. Prevention and control methods:

Immediately stop watering, cut off the diseased part, disinfect the wound with chlorothalonil powder or charcoal powder, and spray with 200 mg of neophytomycin every 7 days. (5) Flower rot is mainly prone to occur during the flowering period when the temperature inside the greenhouse is high and the temperature outside the greenhouse is low. Fine brown spots appear on the petals at the first onset, and later the spots become larger and more numerous, and the disease is confined to the flowers.

Prevention and control method: spray 50% carbendazim 800 solution or 1% stone sulfur mixture.

The possibility of revival is not great, the leaf disease is serious, the root can not be seen, I don't know if the root is rotten due to excessive watering??

Cut off the flower stalks from the bottom, take out the phalaenopsis one by one, look at the leaves and roots, and give up if the leaves are infected. If the leaves are healthy and the roots are all rotten, they can be saved.

The following points need to be paid attention to when raising orchids:

Watering: Do not water frequently, but dry and water thoroughly, when the moss (after the surface of the potting soil is dry, the root turns from green to white and then watered) so that the roots will not rot.

Light: Under scattered light, too strong light will sunburn the leaves, too weak will affect the growth.

Temperature: Keep the temperature above 15 degrees Celsius and below 33 degrees Celsius, too low is easy to freeze, too high will be semi-dormant. Suitable temperature for growth: more than 20 degrees.

Ventilation: Phalaenopsis is best not to be raised in the same pot, so that it is impermeable to wind and easy to be infected with diseases and pests. Except for the cold wind in winter, open windows for ventilation in other seasons to facilitate growth and reduce the occurrence of pests and diseases.

Pay attention to these points, and phalaenopsis can basically grow healthily

If a lesion is found in the leaf, the simple way is to use scissors to subtract the lesion to prevent it from spreading, and then disinfect it with alcohol.

Phalaenopsis flowering conditions: night temperature of 15 to 20 degrees, daily temperature of 25 to 30 degrees, for a month, basically can produce flower stalks.