How to treat rust spots on the leaves of the junzi orchid?

Suspected brown spot disease.

Symptoms: The disease occurs on the leaves of Cailan, the initial period is dark green water-stained dots, and later expands into round or irregularly shaped lesions, the lesions ** concave, reddish-brown to gray-brown, the texture is harder than anthrax, the lesions can penetrate both sides of the leaves, but will not perforate, and produce reddish-brown dots on the front of the leaves, which are its conidia. Sometimes there are diseased leaves and mixed anthracnose bacteria.

Prevention and control methods: high temperature and humidity dripping water on the roof of the shed, these are the conditions for the onset of the disease, so in the summer and autumn high temperature season, we should pay attention to shading, ventilation, cooling, and dampness, and carry out disease prevention measures in advance.

At the beginning of the disease, 40% methyl copper wettable powder can be used 600 700 times liquid; 64% alum wettable powder 500 times liquid; 400 500 times of 36% thiophanate-methyl suspension, choose one of them, once every 10 days or so, and continuously prevent and control 1 2 times.

It is a spider fungus, sprayed with pesticide 920 flush, and the method medicine used is written!

Don't panic when rust spots appear in orchids, according to this method, even stubborn rust spots can be easily removed.

The leaves of the Monarch Orchid appear rusty finger type early spots, which is due to the leaf spot disease of the Monarch Orchid.

First, the disease mainly infects leaves. In the early stage of infection, small brown spots occur in the patches, which gradually expand into yellow-brown to gray-brown irregular lesions. The affected part is slightly sunken and the edges are slightly raised. In the later stage, the lesions are dry and have small black spots on them.

Second, the pathogen is a fungus. Excessive application of nitrogen fertilizer in cultivation. When phosphorus and potassium fertilizers are relatively small, the disease is prone to occur. Under high temperature and dry conditions, or when the scale insect is seriously infested. Leaf spot is prone to damage.

3. Governance measures:

1. Remove diseased leaves and diseased finches and reduce the source of infection.

2. Control scale insects, avoid insect pests, and reduce non-dyeing.

3. In the early stage of the disease, spray carbendazim solution, tobuzin wettable powder solution, and dysenammonium solution for prevention and control.

1. Orchid likes sufficient fertility during the growth period, if rust spots appear on the foliage, it is recommended to dilute it with potassium fertilizer and blast sand, once or twice a week, which can generally alleviate the rust spot of Orchid.

2. It may be that the soil planted by the orchid itself has the germs of the virus, at this time, the rust spot of the orchid is generally particularly serious, and some of the leaves have been completely rotted when it can be considered a soil problem.

It is time to change the soil, and it is generally recommended to use the disinfected garden soil to plant the Monarch Orchid, and try to remove the diseased leaves to prevent the virus from spreading.

There are rust spots, and the leaves will appear black-brown spots, which will gradually turn yellow and fall off. Carbendazim solution needs to be sprayed in time for effective prevention. Caused by infection with red spiders and scale insects, it is necessary to remove insects and spray insecticides in time.

When maintaining the orchid, it is necessary to sterilize and disinfect the soil and maintain it in a ventilated and bright place.

Orchids suffer from rust spots, which cause black-brown spots to appear on the leaves. After too long, the leaves of the orchid will gradually turn yellow and fall off. Damaged leaves need to be removed in time to prevent further spread of the disease. Spray carbendazim solution in time for effective prevention and control.

Rust spots on the leaves of the orchid may be due to a large number of pests and diseases. Orchid is susceptible to spider mites, scale insects, etc., and pests will attach themselves to the surface of damaged leaves in large numbers. In addition to wiping the surface of the leaves with a damp rag, it is also necessary to spray insecticides in time for effective prevention.

When it comes to the maintenance of the orchid, it is necessary to plant it in loose and fertile soil. The soil was soaked with carbendazim solution for effective sterilization and disinfection. After planting the orchid, it is necessary to turn the soil frequently to effectively promote the absorption of the roots, and there is more rain in the rainy season, so do a good job of soil drainage.

Orchids need to be pruned frequently to effectively reduce excess nutrient consumption. The thinning of the branches of the orchid can effectively enhance air circulation and avoid the breeding of bacteria and insect pests. Orchid needs to be maintained in a ventilated place, and the windows should be opened frequently to effectively promote the continuous growth of the plant.

After the appearance of rust spots, it is necessary to cut off all the diseased leaves and destroy them to avoid infection of other healthy leaves, and you can also spray carbendazim solution and tobuzin solution on the plant to eliminate the bacteria on the orchid, and you can also replace the loose and fertile soil with good air permeability and replant it, so that the plant can grow healthily.

1. Prune

After rust spots appear, you can prune it. Use sharp scissors to cut off the diseased and spotted leaves to avoid infection of other healthy branches and leaves, and apply plant ash to the wound after pruning to avoid tissue fluid overflow and allow the pruning wound to heal as soon as possible.

2. Spray the agent

After pruning, it is also necessary to spray the orchid. First of all, you need to buy a special carbendazim wettable powder from the market, or Tobuzin wettable powder, and then mix the agent with water evenly according to the proportion on the package, and spray it on the leaves of the plant to eliminate the bacteria on the orchid.

3. Replace the soil

The appearance of rust spots in the orchid may be due to the growth of bacteria in the planting soil, and it needs to be replanted with replacement soil. Orchid is suitable for growing in soil with rich trace element content and good drainage, and can be used to use loose, breathable, and nutrient-rich garden soil when replacing soil.

4. Replant

When replanting the orchid, you need to soak the plant in potassium permanganate solution to improve its disease resistance, wait for ten minutes and then take it out, rinse it with clean water and drain the water, and then plant it in the soil prepared in advance, and use fine soil to cover the roots.

1. What's going on with rust spots on the leaves of the junzi orchid:

The leaves of the orchid have rust spots, which may be infected with insect pests, such as red spiders, scale insects and other paulownia fans, which absorb the water in the leaves and cause disease spots.

2. What should I do if there are rust spots on the leaves of the gentleman's orchid:

At the beginning of the disease, 40% methyl copper wettable powder can be used 600 700 times liquid; 64% alum wettable powder 500 times liquid; 400-500 times of 36% thiophanate-methyl wide suspension agent, choose one of them, hail once every 10 days, and continuously control 1-2 times.

Spider myogram fungus, spray with pesticide 920 flush, and see the instructions for the method of medication.

There are too many roots and the water can't keep up, and the junzi orchid can't be exposed to the sun, so it should be poured with beer once a week, and the pot should be changed.

1. Reasons. 1.Infective diseases:

Rust spots appear on the leaves of the orchid, which may be infected with diseases such as rust spots. After being infected with this disease, spots appear on the leaves, which then deepen and become larger, gradually spreading to all leaves, and the finch infects the other leaves, thus affecting the whole plant. 2.

Pest infestation: This doesn't just happen with infected diseases. Once infected with pests, such as spider mites and scale insects, the pests attach to the leaves and absorb water, which can also lead to rust spots on the leaves.

2. What to do if there are rust spots.

1.Leaf pruning: Regardless of whether you are infected with pests and diseases, cut off the leaves with rust spots in time to prevent the disease from spreading further.

2.Treatment of the disease: After the infection is confirmed, the orchid should be moved to a well-ventilated place and sprayed in time at the beginning of the disease.

It can be sprayed with 20% tobuzin wettable powder or 50% carbendazim wettable powder 1000 times liquid. 3.Pest treatment:

If the number is small, you can manually kill the pest first. If it is severe, it should be sprayed in time. Hu Congcong 4

Pay attention to maintenance: This situation is easy to occur in a high temperature and high humidity environment, so it is necessary to maintain good ventilation, regularly disinfect and change soil, and is not suitable for thick fertilizer or raw fertilizer.

When brown spot disease occurs in Junzi orchid, the lesions on the leaves will gradually expand, and finally lead to the weakening of the plant, at this time, appropriate soil change treatment can be carried out, and the diseased leaves should be cut off and destroyed in a centralized manner, and the surrounding air circulation should be often strengthened, and in severe cases, carbendazim or potassium permanganate solution should be sprayed 1 or 2 times every half month.

1. Soil replacement treatment

Orchid is easy to suffer from brown spot disease during the growth period, once the diseased leaves on the plant will fall into the potting soil after the onset of the disease, it will pollute the soil for a long time, resulting in poor root growth, it is best to change the soil in time, and loosen the soil after re-distributing the soil, so as to facilitate the respiration of the root system.

2. Cut off the blades

Brown spot disease is a common disease of Junzi orchid, it belongs to fungal diseases, strong harm ability, once the disease occurs after the leaves on the plant will appear a lot of plaques, a long time will cause the plant to wither, so how to deal with the rust spot of Junzi orchid, at this time to cut off the diseased leaves in time and destroy them in a centralized manner, but also to clean up the fallen leaves.

3. Pay attention to ventilation

When the orchid causes brown spot disease, most of it is caused by poor ventilation, it is best to keep the surrounding good ventilation and ventilation in time when the disease occurs, do not put the pot in a shady environment during the usual maintenance period, and often open the doors and windows in the high temperature and high humidity season to facilitate ventilation.

4. Spray drugs

When brown spot disease occurs in Junzi orchid, the lesions on the leaves will gradually increase, and the growth of the plant will be weakened for a long time, at this time, it is necessary to reduce watering in time, keep the leaves dry, and then regularly spray with an appropriate amount of carbendazim or potassium permanganate solution for prevention and control, so as to play the role of sterilization and disinfection.