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If the concentration of the orchid is too large when spraying the leaves with mancozeb, it may cause leaf burning. In this case, the following measures are recommended:
1.Immediately stop using mancozeb and wash the foliar surface with water. Using a sprayer or watering can, wash mancozeb from the surface of the orchid leaves to avoid further damage.
2.Observe the condition of the orchid plant, and if you find that the plant has shown severe burn symptoms, you can try to cut off the damaged leaves to reduce the burden on the plant.
3.Increase the frequency of watering appropriately to help the plant recover. If the concentration of mancozeb is too high, it may affect the roots of the orchid plant, so make sure the orchid plant is adequately watered to maintain its normal water requirements.
4.If the situation is more severe, consider moving the plants to a well-ventilated area to reduce the effects of mancozeb. At the same time, contact a professional botanical doctor or specialist in time for further advice.
It should be noted that the use of fungicides should be operated in strict accordance with the proportions and precautions on the instructions to avoid damage to plants caused by improper use. In the process of orchid farming, more attention and observation are also needed in order to find problems in time and take corresponding measures.
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Here's how:
Generally speaking, under the premise that the foliar surface is not damaged by fertilizer, the concentration of fertilizer can be appropriately increased, which can improve the osmotic efficiency and the effect is better, but often in order to pursue this effect, many orchids do not grasp the concentration well, and they will burn the leaves, so they do not have enough experience, or insist on thin fertilizer diligently.
Mancozeb is a kind of broad-spectrum, low toxicity, low residue, high efficiency, multi-point resistance is not easy to produce resistance to protective fungicides, belongs to organic sulfur fungicides, after use, can form a layer of air-permeable, permeable, light-transmitting dense protective film on the surface of leaves and fruits, inhibit the germination and invasion of pathogen spores, destroy the activity of various enzymes required for the normal physiological metabolism of pathogens, so as to achieve the purpose of sterilization and disease prevention, can prevent and control fungal diseases of a variety of crops, and has become an important variety of fungicides.
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Hello friend, but don't sprinkle too much, you will be burned to death if you sprinkle too many stems.
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Orchid stem rot.
Stem rot of **.
Orchid stem rot, also known as blight and wilt, can be called orchid stem rot as long as it causes the rot of the orchid pseudobulb. The peak incidence period is from May to September every year. Today, it is mainly said that stem rot is caused by fungi, but no matter what kind of **, most of them have the cause of high temperature, high humidity and no ventilation.
Symptoms of stem rot.
The main symptom is that the leaves of the orchid begin to turn yellow from the base, and will wither and die within a day or two. When you touch the leaf with your hand, it will break, and the onset will be rapid and severe.
At the same time, the surface of its root system is still intact, but the inside has been infected and turned brown, and even rotted, so the appearance of stem rot has a great impact on orchids.
Prevention and control of orchid stem rot.
For orchid stem rot, the most important thing is prevention, followed by remediation**.
Prevention of stem rot.
Summer and autumn are prone to disease, the climate environment is high temperature and rain, humidity is high, orchids are very susceptible to infection. Therefore, windows should be opened for ventilation to ensure air flow. The potting soil should not be too wet, and use more water-soluble fertilizer with trium.
In addition, it should also be sterilized and disinfected frequently, and from May onwards, the whole orchid and the surrounding environment can be sprayed every week with special fungicides such as carbendazim and fungtoxin. It is mainly for the sterilization of the periphery, and the foliage can be appropriately less.
Stem rot of **.
For orchids that have been infected with stem rot, the whole pot of orchids should first be removed and washed. Then cut off all the diseased plants and repair the decayed parts with a razor blade.
Soak the orchids in sterilization for at least one hour. Then place in a cool place to dry.
Then mix the manganese zinc of methaglamin, which is adjusted into a paste, smear it on the stem of the orchid, and dry it.
Finally, the false bulb of the orchid can be wrapped in sterilized aquatic plants and replanted with new pots and soil.
Note: Do not water immediately after replanting, and do not bask in the sun, leave it alone in a ventilated place. After three days, it can be doused thoroughly with streptomycin with water. Thereafter, the whole plant is soaked with a sterilization agent every month.
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Friend, you said that this medicine can cure orchid rot.
Pay attention to the usage, don't overdose, I hope it can help you.
It is best to use compound fertilizer, which is also rich in nutrients, including carbon soil, coconut peat soil, humus soil, etc., and you can also use plant ash as fertilizer, which is nutritious.
1) English common name mancozeb (2) trade name mancozeb.
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