Preventive measures of longevity flower powdery mildew and gray mold

Longevity flowers are relatively easy to maintain in succulent plants, but longevity flowers are also more prone to powdery mildew and gray mold. Therefore, in the maintenance need to pay attention to the following five points, for longevity flowers can effectively prevent the occurrence of powdery mildew and gray mold.

Longevity flower

1. Try to keep the leaves dry and the pots well ventilated, especially do not spray water in the evening, so that the leaves remain water overnight. If there are water droplets in the leaves, dry them with a paper towel or blow them away with air.

2. give priority to prevention and spray fungicides on a regular basis.

3. The plant should be smeared with plant ash or sulfur powder or nail receptacle as soon as possible when the wound and broken surface appear inadvertently.

4. Pay attention to check the plant status in the days of large humidity and temperature difference, especially those prone to disease, such as Paris, white fox and so on.

5. Once it is found that diseased leaves and branches should be removed as soon as possible in order to reduce the stock of bacteria, and at the same time, we should seize the opportunity to spray.

Longevity flower disease control: powdery mildew, gray mold, stem rot and root rot longevity flowers are relatively easy to maintain in succulent plants, but there will also be some common diseases: powdery mildew, gray mold, stem rot and root rot, the following author: Dingyun water, teach you how to control common diseases of longevity flowers, some control measures and maintenance measures are also general for succulent plants, may refer to. Powdery mildew mostly occurs from late autumn to early spring and is easy to occur when there is a large temperature difference between day and night and high humidity. It is most suitable for the production, germination and infection of spores when the temperature is 15 ℃ at night and the humidity is as high as 90%. During the day, the high temperature of 27 ℃ and low humidity of 40-70% are the most suitable for spore maturation and emission. It will be inhibited when it is more than 30 ℃. The humidity range of the disease is very large, and it can occur between 23% and 99% of the air relative humidity. Therefore, powdery mildew can still occur and spread rapidly even in a dry greenhouse or under the conditions of high temperature and humidity in the mildew and rainy season. " Botrytis cinerea is a low temperature and high humidity disease. The high incidence period is when the growth temperature of the pathogen is 2: 30 ℃, the temperature is 20: 25 ℃, and the humidity is more than 90%. The pathogen was tolerant to low temperature, and produced a large number of spores at 7 ℃ and 23 ℃. The disease is easy to occur when the light is weak, the relative humidity is above 90% or there is a water film on the surface of the seedlings. Flowering is the most susceptible to disease, invading from wounds and aging organs through airflow, irrigation and agricultural operations. " To understand the mechanism of powdery mildew and gray mold, we should pay attention to the following points in maintenance: 1) try to keep the leaves dry and well ventilated between pots, especially do not spray water in the evening to keep water overnight. If there are water droplets in the leaves, dry them with a paper towel or blow them away with air. 2) give priority to prevention and spray fungicides regularly. 3) the plant should be smeared with plant ash or sulfur powder or nail receptacle as soon as possible when the wound and broken surface of the plant appear inadvertently. 4) in the days of humidity and temperature difference, we should pay attention to check the plant status, especially the disease-prone varieties such as Paris, white fox and so on. 5) once it is found that diseased leaves and branches should be removed as soon as possible to reduce the stock of bacteria, and at the same time, we should seize the opportunity to spray. What the novice should pay special attention to is that, in the absence of water, if it is found that the longevity flower plant is not vibrant, the plant leaves are shrunken or wrinkled, bleak and dull, it is generally explained that there is something wrong with the plant root system, and it is necessary to immediately change the plant basin to wash the root and replace the plant material. Seriously, it is necessary to decisively behead and cut off the good part for cutting. Don't simply think that plants are short of water or fertilizer. The most common causes of stem rot and root rot are warm and wet environment and wound infection. Mushroom mosquitoes, moths and snails drilling holes in stems and root pink scale are all the main culprits, so on the one hand, to prevent stem rot and root rot, we should develop good watering habits and try our best to avoid long-term waterlogging. On the other hand, it is necessary to deal with germs and insect pests. Powdery mildew, gray mold, stem rot and root rot are recommended: tebuconazole, Syngenta 75% chlorothalonil 1000 times, 50% thiram wettable powder 500 times 800 times, 65% Dysen zinc wettable powder 600 times. If you can't apply the medicine, you can also spray and wipe the plant with baking soda 1purl 1000 or diluted vinegar solution. Incidentally, pesticides and flowers also have fake distribution centers. It is recommended to do more homework before buying medicine. It is best to identify famous factories or brands. Don't be too small and lose the big. I know that many novices like to use carbendazim and methyl thiophanate recommended by drugstores, especially 1 yuan per pack. Even if you can buy RP, it can only be used to wipe the wound. It is basically ineffective to powdery mildew, gray mold, stem rot and root rot caused by fungi. In addition, in order to prevent drug resistance, more than 2-3 kinds of fungicides are generally prepared, and the effect of changing use is much better than that of single use. In addition, we have to say that cinder, which is readily available, is widely used in the cultivation of succulent plants. Many people only know that it has a hydrophobic effect, which can reduce the planting cost, but they do not know that cinder has both germicidal and insecticidal effects because it is rich in sulfur. Plants that use cinder are more resistant than those who do not, and are not easy to produce root rot and root pink scale. (transferred from fruit-free pudding bear) A brief discussion on the pest control measures of longevity flowers longevity flowers are relatively easy to maintain in succulent plants, but some common diseases also occur, such as powdery mildew, gray mold, stem rot, root rot, leaf spot, mosaic virus and so on. The following will teach you how to prevent and cure the common diseases of longevity flowers. Some control measures and conservation measures are also general for succulent plants. You may wish to refer to them. Powdery mildew mostly occurs from late autumn to early spring and is easy to occur when there is a large temperature difference between day and night and high humidity. It is most suitable for the production, germination and infection of spores when the temperature is 15 ℃ at night and the humidity is as high as 90%. The high temperature of 27 ℃ and low humidity of 40-70% during the day are the most suitable for the maturation and emission of spores. It will be inhibited when it is more than 30 ℃. The humidity range of the disease is very large, and it can occur between 23% and 99% of the air relative humidity. Therefore, powdery mildew can still occur and spread rapidly even in a dry greenhouse or under the conditions of high temperature and humidity in the mildew and rainy season. " Botrytis cinerea is a low temperature and high humidity disease. The high incidence period is when the growth temperature of the pathogen is 2: 30 ℃, the temperature is 20: 25 ℃, and the humidity is more than 90%. The pathogen was tolerant to low temperature, and produced a large number of spores at 7 ℃ and 23 ℃. The disease is easy to occur when the light is weak, the relative humidity is above 90% or there is a water film on the surface of the seedlings. Flowering is the most susceptible to disease, invading from wounds and aging organs through airflow, irrigation and agricultural operations. " To understand the mechanism of powdery mildew and gray mold, we should pay attention to the following points in maintenance: 1) try to keep the leaves dry and well ventilated between pots, especially do not spray water in the evening to keep water overnight. If there are water droplets in the leaves, dry them with a paper towel or blow them away with air. 2) give priority to prevention and spray fungicides regularly. 3) the plant should be smeared with plant ash or sulfur powder or nail receptacle as soon as possible when the wound and broken surface of the plant appear inadvertently. 4) in the days of humidity and temperature difference, we should pay attention to check the plant status, especially the disease-prone varieties such as Paris, white fox and so on. 5) once it is found that diseased leaves and branches should be removed as soon as possible to reduce the stock of bacteria, and at the same time, we should seize the opportunity to spray. What the novice should pay special attention to is that, in the absence of water, if it is found that the longevity flower plant is not vibrant, the plant leaves are shrunken or wrinkled, bleak and dull, it is generally explained that there is something wrong with the plant root system, and it is necessary to immediately change the plant basin to wash the root and replace the plant material. Seriously, it is necessary to decisively behead and cut off the good part for cutting. Don't simply think that plants are short of water or fertilizer. The most common causes of stem rot and root rot are warm and wet environment and wound infection. Mushroom mosquitoes, moths and snails drilling holes in stems and root pink scale are all the main culprits, so on the one hand, to prevent stem rot and root rot, we should develop good watering habits and try our best to avoid long-term waterlogging. On the other hand, it is necessary to deal with germs and insect pests. Powdery mildew, gray mold, stem rot and root rot are recommended: tebuconazole, Syngenta 75% chlorothalonil 1000 times, 50% thiram wettable powder 500 times 800 times, 65% Dysen zinc wettable powder 600 times. If you can't apply the medicine, you can also spray and wipe the plant with baking soda 1purl 1000 or diluted vinegar solution. Incidentally, pesticides and flowers also have fake distribution centers. It is recommended to do more homework before buying medicine. It is best to identify famous factories or brands. Don't be too small and lose the big. I know that many novices like to use carbendazim and methyl thiophanate recommended by drugstores, especially 1 yuan per pack. Even if you can buy RP, it can only be used to wipe the wound. It is basically ineffective to powdery mildew, gray mold, stem rot and root rot caused by fungi. In addition, in order to prevent drug resistance, more than 2-3 kinds of fungicides are generally prepared, and the effect of changing use is much better than that of single use. In addition, we have to say that cinder, which is readily available, is widely used in the cultivation of succulent plants. Many people only know that it has a hydrophobic effect, which can reduce the planting cost, but they do not know that cinder has both germicidal and insecticidal effects because it is rich in sulfur. Plants that use cinder are more resistant than those who do not, and are not easy to produce root rot and root pink scale. For the leaves of longevity flowers mainly affected by leaf spot disease, if not found in time, the spot area will expand into dark brown "patches". It will also infect adjacent longevity potted plants, and white foxes and friends are vulnerable to this germ. Treatment: carbendazim, chlorothalonil or methyl topiramate powder can be used to prepare an aqueous solution according to 1Ru 200 and pour it into a flowerpot, or you can use a spray can to spray the front and back of the leaves, once every three to five days, usually cured after three times. If the disease is serious, you can dig up the plant, rinse gently with water, wash off the soil at the root, soak it in the prepared aqueous solution for 2-3 hours, then change the pot, change the soil and replant it, and pour it thoroughly with the soaked aqueous solution. After changing the basin, we should often use the prepared aqueous solution to spray the positive and negative sides of the leaves, after more than half a month to cure. In the spring and autumn season, allowing the damaged plants to receive more sunlight can also increase the resistance of the plants, promote the absorption of the solution, and restore their health more quickly. In addition, mosaic virus is the most common virus in longevity flowers, and it appears widely in modern hybrid varieties. The virus only occurs in the harsh growth environment, and is transmitted to the plant by severe root infection, showing that there are light green to yellow mosaic spots or patches on the leaves, the surface is uneven, and in serious cases, it will inhibit the growth of the plant. Romantic flowers and snow moon are most vulnerable to this virus. On the one hand, the treatment method is to cut off some branches, then remove the diseased leaves, and then soak the branches with carbendazim aqueous solution for about 5-6 hours for sterilization. On the other hand, the original roots must be abandoned and the original basins and substrates must be sterilized; then the sterilized branches will be re-cut into plain sand or vermiculite to excessively promote roots, which can take root in about 10 days and 20 days. When the root grows to 1 cm or 2 cm long, it can be pseudo-planted in the nutritious soil (peat soil + perlite is prepared at 1:1, or a small amount of vermiculite can be added) Finally, the pseudo-planting is put in a place with moderate temperature and good ventilation to slow down the seedlings. Wait until the spirit of the leaves, and then move to astigmatism maintenance, wait until there are new leaves come out, can be full sunshine (summer longevity to avoid full sunshine, will burn the leaves). This method is introduced to Hua you, and the expected results are also achieved. Conclusion: the above are the measures for the prevention and control of longevity flower diseases and insect pests. I hope you can sum up and exchange experience.