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Hand can not pick up the water to flush, to see if you can flush down, can not be the medicine, it is recommended to use the last medicine, the flower is harmful, as for the yellowing, it is generally a lack of water, but the cyclamen water is too much easy to rot the roots, you look at your soil situation, usually there is no stagnant water at the bottom of the pot, you start from this aspect first, if there is a lack of water to water some, if not, first remove the insects in the solution of the leaves, it may also be because of the problem of the insects caused by the leaf yellow, the insects solve the leaves are also yellow, you are changing the light, Air humidity, fertilization and other conditions, one variable at a time, so that even if there is a problem, you know how to operate, I hope it can help you.
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You first see if the white dots are on every leaf, and it may be that the pattern on the leaf makes you mistaken. Let's see if your cyclamen leaves are growing vigorously. If not, eighty percent is your water is big, touch the white spot and other places to feel the contrast, and then cut that place and no white spots with a small blade for comparison, if it is not the same, eighty percent is a fungal infection, spray carbendazim and fertile leaf amino acid foliar fertilizer is good, cyclamen would rather dry a little, not water, as long as the water is watered, the bulb will begin to mold, so the water must not be big.
Cyclamen should have no white spots, and if it is a white insect, it should be diluted with dimethoate or pesticide and sprayed.
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Whitefly, dimethoate, or diluted with extermin
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The first step in killing cyclamen insects is to kill them, spray them with the corresponding pesticides to completely remove them, and improve their cultivation and maintenance measures. Common insect pests in cyclamen include mites that feed on young leaves and shoots, slugs that are large and form leaf gaps, aphids that cause yellowing and wrinkled leaves, and cabbage worms that damage the dorsal parts of leaves.
How to deal with cyclamen long bugs.
1. Mites
Mites are one of the main pests and diseases of cyclamen, the main damage is the young leaves, young shoots, mites will suck the juice in it, so that the leaves of cyclamen will curl inward along the leaf edge, the leaf surface will turn brown, and there will be oily shiny, the leaves are shrunken and deformed, and can be sprayed with dicofol, pyridoxalin, etc., mites are more resistant to pesticides, and they should be applied in rotation.
2. Slugs
Slug is one of the common pests and diseases of cyclamen, the main damage is the top of the young leaves and young shoots, when the spider is infested, there will be gaps or holes in the leaves, and the young leaves will also appear mutilated, the slugs are relatively large, they can be caught directly, in order to avoid being infected again, reduce the air humidity on the ground and clean up the internal environment.
3. Aphids
Aphids are one of the main pests and diseases of cyclamen, mainly infecting the back of cyclamen leaves, which will suck the sap of young leaves and young shoots, causing the leaves to wrinkle and yellow, and may fall off in severe cases.
4. Cabbage worms
Cabbage worm is one of the common pests and diseases of cyclamen, it will parasitize on young shoots, young leaves, leaves and flower buds, and like to feed on the back of the leaves.
Through our introduction, I believe you have a deeper understanding of how cyclamen grows worms.
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Cyclamen pests are first killed and sprayed with the appropriate pesticides to remove them, and cultivation and maintenance measures are improved. Common insect pests in cyclamen include mites that feed on young leaves and shoots, slugs that are large and form gaps in the leaves, aphids that cause yellowing and wrinkled leaves, and cabbage worms that damage the backs of leaves.
1. Mites
Mites are one of the main pests and diseases of cyclamen, the main damage is the young leaves, young shoots, mites will suck the sap, so that the leaves of cyclamen are curled inward along the leaf edge, the leaf surface will turn brown, and there will be oily shiny, the leaves are shrunken and deformed, and they can be sprayed with dicofol and pyridoxalin, etc., and the mites are more resistant to pesticides, so they should be applied in rotation.
2. Slugs
Slug is one of the common pests and diseases of cyclamen, the main damage is the top of the young leaves and young shoots, when the spider is infested, there will be gaps or holes in the leaves, and the young leaves will also appear mutilated, the slugs are relatively large, they can be caught directly, in order to avoid being infected again, reduce the air humidity on the ground and clean up the internal environment.
3. Aphids
Aphids are one of the main pests and diseases of cyclamen, mainly infecting the back of cyclamen leaves, which will suck the sap of young leaves and young shoots, causing the leaves to wrinkle and yellow, and may fall off in severe cases.
4. Cabbage worms
Cabbage worm is one of the common pests and diseases of cyclamen, it will parasitize on young shoots, young leaves, leaves and flower buds, and like to feed on the back of the leaves.
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The small white worms born from cyclamen are scale insects, which are mainly caused by high temperatures and poor ventilation. In the early stage, you can use pepper water and soapy water, and in the later stage, you can use drugs such as cocoon, scales or carbendazim, and spray them once a week. During the maintenance period, the plants should be moved to a warm and ventilated position, and antibacterial agents can be used appropriately for prevention.
If not properly cared for, cyclamen is susceptible to pests and diseases, the most common being scale insects. Scale insects are small in size, mostly white, and can damage the young leaves and flowers of cyclamen, so you can wipe the leaves with soapy water and pepper water in the early stage, and spray the leaves and stems of the plant with solutions such as chlorothalonil, scale or scale bizhi in the later stage.
It is suitable for spraying in a high temperature climate, spraying at about 30 degrees, the medicinal effect is better, and it is also conducive to the penetration of the liquid medicine, which can quickly kill the scale insects. The scale insect is relatively easy to remove, generally sprayed once in 5 days and 7 days, sprayed 3 times and 4 times in a row to clean it up, and the plant should be moved to a warm and ventilated position after spraying.
The scale insects on cyclamen are mainly females, which are very reproductive, and will lay eggs on the plant in large numbers and suck the sap and nutrients of the leaves, so that the leaves of the plants curl and yellow, dry up and fall off, and induce various diseases. Scale insects can harm the growth of plants, and if not timed, a large number of pests can lead to plant death.
Scale insects mostly occur in spring, and if the plant is exposed to high temperature, humidity and unventilated environment for a long time, it is very easy to be infested. To grow well like cyclamen, place it in a warm, ventilated location and give the plant plenty of light and moisture. Antibacterial agents can be sprayed appropriately to prevent insects, and windows should be opened frequently for ventilation to ensure indoor air circulation.
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Common ailments of cyclamen: bacterial soft rot, gray mold, anthracnose, etc
Leaf spot and root nematode disease, the control methods are as follows: Bacterial soft rot: caused by Bacillus spp.
It mostly occurs in petioles and stems. The lesions at the petiole are small light brown spots at first, and the water is soft rot. After expansion, the diseased tissue is soft rot, swollen, ruptured, detached from the epidermis, and has a foul smell.
After the bulb is infected, the tissue becomes yellowish-brown, soft rot, and pasty. It is more likely to develop the disease during the growing season and in early spring. After discovery, the diseased and disabled tissues should be cleaned up in time to reduce the source of infection, strengthen ventilation and control watering; In the early stage of the disease, spray with 200 ppm to 1000 ppm streptolinin, oxytetracycline or penicillin solution, or smear the diseased plant, and then water the diseased plant pot with the solution; Spray an equivalent amount of Bordeaux liquid or stone sulfur mixture.
Botrytis cinerea: caused by the fungus of the genus Botrytis vinifera. It mostly occurs on leaves and petioles.
The lesions are dark green to yellowish-white spots at first. Water-stained, irregularly shaped, sunken, soft rot, dark discoloration. Under humid conditions, soft gray-brown mold appeared on the lesions, that is, the meristem of pathogenic bacteria, and gray mold spots were also covered on the peduncle and flower in the later stage.
It can be reproducible in greenhouses. However, it is important to focus on February-April, July-August. High temperature, humidity and poor ventilation are conducive to the occurrence of the disease.
After discovery, clean up the diseased plants in time, adjust the temperature, humidity and ventilation conditions; At the beginning of the disease, spray i% equivalent Bordeaux solution, polyantimycin 2000 times or 70% tobuzin 1000 times 1500 times.
Anthrax: Caused by the fungus Semi-Aware Fungi. Occurs on leaves, petioles.
Lesions on the leaves mostly occur on the dorsal sides of the leaves. The lesions are brown at first, with inconspicuous margins. The lesions are in the form of a whorl and expand outward, the near pattern is irregular, the inner black is revealed, the edges are yellow, and gray-black granules appear on the lesions in the later stage, and the gray-white colloidal body is extruded under humid conditions, that is, the meristem disc and meristem of the pathogenic bacteria.
Diseased leaves do not fall off after drying. It mostly happens in May and July. High temperature and high humidity, suffering from bacterial soft rot, which is conducive to the occurrence of diseases under conditions such as aphids and red spiders.
Remove diseased leaves and insects in time after discovery; At the beginning of the disease, spray 60% anthrax fome r-} solution or 70% tobuzin 1500 times.
Leaf spot: Caused by pathogenic bacteria, the affected leaves appear black spots and enlarge, then turn pale brown and wither. After discovery, diseased leaves should be removed as soon as possible, and ventilation should be strengthened or the equivalent amount of Bordeaux liquid should be sprayed.
Root nematode disease: caused by pathogenic bacterial infection caused by nematodes harming roots. The roots are raised and nodules, the plant growth is weak, and the leaves are wilted, and the soil can be disinfected with 2000-4000 times the liter of mercury water after discovery.
In order to prevent the occurrence of insects, the potting soil must be disinfected in advance to kill insects.
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Go to the flower room and buy [green alum] to soak in water and water the flowers.
Gardenias are infested by small insects, teach you a simple trick, which can not only prevent insects, but also do not need to spray.
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