What s wrong with the yellow spots on the leaves of the junzi orchid

The small yellow spots on the leaves of the orchid are yellow spot or brown spot, which is caused by poor maintenance environment during growth, to avoid this phenomenon, it should be avoided from direct sunlight in summer, placed in a ventilated and cool place, and often sprinkled water on the ground to increase air humidity and improve the small environment. In winter, try to get as much sunlight as possible to accumulate nutrients and provide more energy for flowering and growing new leaves.

Prevention and control methods: If the yellow spots in the leaves are dense, you can cut off the damaged leaves, and spray 800-1000 times of 50% carbendazim wettable powder on the whole plant, spray it once every 7 days or so, and spray it about 3 times in a row to stabilize the condition. or methyl tobuzin, antibacterium, zebsen zinc and other bactericidal drugs.

It also has good effects with potassium permanganate. If the yellow spots are not very serious, they can be directly sprayed to prevent and control, but the yellow spots may still appear on the leaves, which can only control the disease from developing and deteriorating, which is a common disease. It is recommended to focus on prevention in the future, try to let it grow under relatively good environmental conditions, and the plants are robust in order to resist the infection of pests and diseases.

Watering should be controlled in a dry state, but the supply of water-based fertilizers should be appropriately increased during the arrow period. Excessive watering and insufficient light are important reasons for the low disease resistance of plants, so to avoid mutual infection between diseased plants, they should be isolated and maintained, and then concentrated and co-cultivated after recovery.

Causes of leaf spot disease:

1) Nutrition is too raw. Horse manure soil or leaf soil must be fully fermented.

3) The potting soil is not well disinfected. If possible, the soil can be steamed or fried to achieve the purpose of disinfection. Or dilute the water with sterilel and spray it to mix and sterilize thoroughly.

4) Lack of nutrition. Purple-brown and yellow-green spots on the leaves are a sign of fertilizer deficiency, especially potassium deficiency.

5) The rust spots on individual leaves are often caused by the direct contact of fertilizer with a fleshy root or the mechanical contusion of a fleshy root.

There is no need to panic when leaf spot occurs, it can be solved by soil exchange. When changing the soil, wash the fleshy roots with clean water, dry them and then put them on the pot. If any of the leaves are rotten and unsightly, simply cut them off.

In addition, it is an organic sulfur arsenic compound fungicide, which can prevent and control a variety of true grate diseases, such as white rot, brown spot, stem spot, etc. Use a concentration of 500 1000 times the liquid, spray once every half month, and spray 3 or 4 times in a row to collect effect. Antibacterial is unique to toxicity, pay attention to safety when using.

In addition, you can use magnetized water to water the orchid all year round, which can also effectively avoid the leaf spot disease of the orchid.

The newly grown leaves have yellow spots, which may be due to infection with diseases, or it may be a lack of fertilizer, and it will be easier to judge the cause if it is convenient to upload a **. You can also send a private message to "Thousand Seasons" and our flower technical experts will help you diagnose.

It is brown spot disease, is a typical fungal disease, the initial symptoms start from the lower leaves, gradually spread to the upper part, the initial is round or oval, purple-brown, the later stage is brown spot black, the diameter is 5-10mm, the boundary is clear, the disease spots can be connected into a piece in severe cases, so that the leaves are yellow and fall off, affecting flowering.

The pathogen overwinters in dead leaves or soil with mycelium or conidia, and begins to occur in early summer with the help of wind and rain, and in autumn, the harm is serious, high temperature and humidity, insufficient light, poor ventilation, continuous cropping, etc. are conducive to the occurrence of diseases.

Prevention and control methods of brown spot disease:

Before or when the high temperature and humidity weather comes, it is necessary to apply less or no nitrogen fertilizer, maintain a certain amount of phosphorus and potassium fertilizer, avoid string irrigation and flood irrigation, especially try to avoid evening irrigation.

When dead spots appear, the dew should be removed as soon as possible in the morning to help alleviate the condition. Properly pruned residual branches should be removed in time, and timely and effective chemical control should be carried out.

The yellow spot of the leaves of the orchid is caused by the brown spot and leaf spot of the plant, as well as too much light and improper fertilization. If it is caused by excessive light and improper fertilization, the plants should be moved to a suitable position and given appropriate light and fertilizer.

The yellow spot on the leaves of the orchid is due to brown spot disease, which is mainly caused by fungal infection. In the early stages, it will change color from the tip of the leaf, showing oval-shaped brown spots on the leaf that will gradually extend to the petiole. In the later stage, the patches will dry up and turn yellow, and eventually fall off.

The residual leaves can be cut off and the relevant agents can be used**.

Leaf spot disease can also cause yellow spots on the leaves of the orchid, and in a dark and humid closed environment, high temperature, and poor ventilation, it will cause the plant to suffer from leaf spot. Yellow spots will grow on the reverse side of the leaves in the early stage, and large areas will grow in the later stage. After the plant gets sick, it is necessary to prune the diseased leaves in time, and wipe the spot with carbendazim or potassium permanganate solution and other fungicides.

Strong sunlight exposure will also make the leaves of the orchid grow yellow spots, the orchid likes light and is afraid of the sun, the plant needs sufficient sunlight for photosynthesis, but can not be exposed to the scorching sun, especially in summer, need shade. If the plant is exposed to strong sunlight in summer, the leaves will lose moisture and will shrink and dry out, slowly grow yellow spots, and then wilt and fall off.

Improper fertilization is also an important reason for the yellow spot of the leaves of Monarch Orchid, to fertilize reasonably, more nitrogen fertilizer needs to be applied during the growth of the plant, and more phosphorus and potassium fertilizer should be applied before the flowering period. Too little potassium fertilizer will cause rust spots to grow on the leaves. It should be noted that in summer, the temperature is high, the growth of plants is slow, and if you apply fertilizer frequently, it will cause the roots of the plants to be burned out, which will affect the growth of leaves.

In general, this phenomenon can occur due to over-watering, over-fertilization, or too much sunlight, but in addition to this, it is also possible that the plant has developed leaf spot.

In general, this phenomenon can occur due to over-watering, over-fertilization, or too much sunlight, but in addition to this, it is also possible that the plant has developed leaf spot. Therefore, in the daily maintenance, we need to do as much as possible reasonable watering, scientific fertilization, moderate light, if leaf spot disease occurs, do a good job of pruning diseased leaves, replacing potting soil, spraying prevention and control.

Workaround:

1.Cut off diseased leaves. Yellow spots on the leaves of Junzi orchid are often due to leaf spot disease, and the diseased leaves and branches must be cut off in time to prevent the spread of the disease.

2.Replace the potting soil. After destroying the diseased leaves, replace the potted plants with new potting soil. Before changing the soil, the roots of the orchid need to be cleaned and disinfected, and the rotten part can be cut off directly. After all the disinfection and pruning treatment, plant it in the new potting soil.

3.Spraying control. If leaf spot disease occurs in Junzi orchid, it can be appropriately sprayed with 50% dycenum 1000 times liquid for prevention and control, sprayed once every 6 days, and sprayed four times in a row.

Strong light exposure, strong light exposure will cause the water loss of the leaves of the orchid and produce yellow spots; Improper fertilization, lack of potassium fertilizer will cause yellow spots on leaves, and phosphorus and potassium fertilizers need to be applied before flowering to alleviate them; The soil is not suitable, and the soil is too alkaline, which will cause the root system to rot and produce yellow leaves, so it is necessary to change the soil for cultivation; Leaf spot disease, after being infected with leaf spot disease, the leaves of Junzi Orchid will also turn black, and the leaves need to be cleaned up in time for disinfection.

The leaves of the orchid have yellow spots, which may be caused by strong sunlight. Orchid is suitable for growing in a sunny environment, but it is not resistant to strong light exposure, especially in summer, it needs to be shaded, if it is exposed to strong light in summer, the water in the leaves will be lost a lot, and the yellow spots will gradually grow, and it is easy to wilt and fall in the later stage.

Improper fertilization can also cause yellow spots to develop in the orchid, and if too little potassium is applied during the growth period, a lack of potassium will cause yellow spots on the leaves. In the later maintenance of Junzi orchid, more nitrogen fertilizer should be applied during the growth period, and phosphorus and potassium fertilizer should be applied before flowering. Note that fertilization should also be avoided in the high temperature environment in summer, otherwise it will cause the roots of Junzi Orchid to be burned and affect the normal growth of leaves.

Orchid is suitable for growing in a loose and breathable, slightly acidic soil environment with good drainage, if the soil is heavy or alkaline, it will cause the roots to rot and produce yellow spots. After discovery, you can take the orchid out of the pot soil, prune off the root system that is seriously rotten and blackened, soak and disinfect it in carbendazim solution, and then re-pot it.

The yellow spots on the leaves of the orchid may be caused by the infection of leaf spot, and the small yellow spots will gradually appear on the leaves of the orchid after infection, and then the spots will continue to expand, increase in number, and even affect the normal growth of the leaves. After discovery, it is necessary to use sterilized sharp scissors to prune off the severely infected leaves, destroy them in a centralized manner, and spray the diluted carbendazim solution to disinfect.

Soft rot. Germs often invade from the wound. At the onset of the disease, light yellow water-stained spots appear on the leaves, and then expand into regular lesions, so that the leaves become brown soft rot compounds, and there is fungal liquid flowing out of the lesion wounds.

Prevention and control methods: Once the disease is found, the diseased plants should be separated immediately, the culture soil around the plants should be peeled off, the diseased parts should be exposed, the rotten leaves should be broken, the rotten parts should be scraped off with a sterilization knife, and the sunlight should be properly irradiated to keep the ventilation and dryness; If there are many decayed plants, all diseased tissues must be removed, soaked in potassium permanganate aqueous solution for hours, rinsed with water to dry, smeared with plant ash at the incision, and planted in a new pot, placed in a ventilated place with low temperature; Drugs** can be sprayed or smeared with penicillin or streptomycin or oxytetracycline plus double water solution, which has a certain effect.

Most of the reasons for just changing pots, spray some potion to avoid dispersion of the disease, you can have sunlight, but not exposure to the sun.

The middle part of the leaf is bai

The macula with "numb-skinned du" appears on the surface of zhi, which is the backstain of foliar pathogens from the surface, and the essence is the root.

A: The above symptoms will occur if the potting soil is too dry and wet, or placed in a hot and unventilated place, or unfermented "raw fertilizer" and thick fertilizer are applied.

Rescue method: If there is a problem with fertilization, it should be repotted immediately and replanted. If it is not placed in the same environment, the place should be changed. Usually, the potting soil should be dry, not too wet, and cut off the macula part to allow new leaves to grow.

After changing the pot, the leaves of the junzi orchid have yellow spots, curled edges, and split ends, what should I do?

There are generally several cases of yellowing of the leaves of the orchid, if the bottom leaves grow new roots from the axils of the leaves, the yellowing of the leaves is a normal metabolism. One situation is that the leaf axils do not grow new roots and the leaves turn yellow, which is mostly due to soil quality, poor air permeability, too much fertilizer or poor watering and humidity control of the roots, which may make the leaves of the Junzi orchid yellow. Water can not be watered, the root tip lacks water, it will make the leaf tip turn yellow and dry tip, in this case, it must be watered thoroughly, in summer, every 7 10 days at the bottom of the pot can sit a small pot of water, so that you can ensure that the water is watered, this is called the water immersion method.

Another condition is the appearance of yellow spots of varying sizes on both sides of the leaves, called brown spots. This is mainly due to the fact that the soil is relatively grown, and the amount of fertilizer applied is too large. Generally speaking, the potting soil should be made of humus, with good air permeability, especially in summer fertilization, thin fertilizer should be applied frequently, and fertilizer water should not be dripped onto the leaves, so as to prevent the occurrence of spot removal.

In another case, due to the abundant sunshine and high temperature in summer, if the orchid is exposed to the sun, solar fever will also occur, and the leaves will turn yellow and wilt in the heavy. In summer, shading should be taken, a ventilated place should be placed, the shade avoidance degree should be 50, and the south window of the home can be shaded with a layer of gauze. One is the common disease of Junzi Orchid, anthrax or macular disease, which can be treated with bactericidal drugs such as chlorothalonil, carbendazim, etc., and then it is to remove the diseased leaves to prevent infection, and the second is to burn, Junzi Orchid is a negative plant, not to be exposed to the sun, and the Junzi Orchid that is often indoors is more sensitive to sunlight and is easy to burn, so it can not be placed outside to see the light.

Is it placed in a place where the sun is very strong, like sunburn, in my opinion, its leaves are not too green, the store nitrogen fertilizer.

It may be that the nutrients of the soil and water are insufficient, and you can try to use the Diyi fertilizer of the water-retaining loose soil.

Generally, the fertilizer is not fermented and there is more, which burns the root system, causing yellow spots on the leaves and slowly rotting. It's a lot of rotten!