Diseases of peppers in the greenhouse and their treatment: what to do, measures to combat the photo

Diseases of bell pepper can be recognized by the appearance of the plant. Therefore, knowing the initial signs, you can choose the right control measures to save the entire crop.

Bacterial diseases

In greenhouse conditions, the climate is favorable for the development of many pathogens. Infection spreads at a faster rate than in open beds. Therefore, it is necessary to follow the recommendations in order to prevent this or that disease.If the disease of peppers in the greenhouse is recognized early, then their treatment will be carried out correctly.

Phytoplasmosis (stolbur) of bell pepper is provoked by mycoplasmas. Infection occurs due to aphids, mites and other pests.

The plant does not grow to the declared size, the bush is small. The upper leaves begin to suffer. Their edges are bent up, twisted and gradually dry out. If you do not start a fight, then the dry leaves turn yellow, fall off and the plant dies. Fruits with a stolbur of pepper are formed small, deformed, redden early. The pepper tastes bitter and not juicy.

The main preventive measures that will help against diseases include:

preventive pest control;
best to choose hybrids, they are more resistant to all diseases;
if diseased bushes appear, they need to be uprooted and carried away from the beds;
be sure to disinfect the supporting structures of the greenhouse, garden tools and the soil itself;
tops after harvesting should not be left on the site;
weeding to prevent weed growth.

Verticillium wilt of pepper is caused by bacteria. Leaves with such a disease first turn pale, become rough and hard. The fruits are formed small, the shape is deformed, and there are very few seeds inside.

If a disease-resistant cultivar is affected, then the spread is slow, and the fruits have time to ripen.

Verticillosis is not curable. You can only save yourself if you carefully process the planting material and the ground.

Why do pepper leaves turn black? Common diseases of pepper seedlings are complemented by a disease such as bacterial black spot.The cause of the disease is bacteria that persist on the seeds. Therefore, it is so important to carry out the disinfection procedure before planting seedlings. Hot weather and high humidity contribute to the mass spread of bacteria.

Dark brown spots appear on the leaves. As the disease spreads, the spots on the pepper leaves turn black and increase in size, but do not coalesce. Due to malnutrition, the leaves begin to dry, and the fruits do not ripen.

To protect against the disease, you should choose varieties that are resistant to this disease. How to process a vegetable crop? The fight against microorganisms may be accompanied by drugs such as Trisodium phosphate, Fitosporin, Planriz.

Viral nature

Bronze pepper (spotted wilt) occurs due to viruses. A distinctive symptom of the disease is the gray-violet or bronze color of the leaves. As the infection spreads, brown spots or streaks form on the leaves, first at the base and then moving towards the tips.

Fruits are also affected by spotted wilt. Peppers develop brown, yellowish or green rings and dark stripes at the base.

What should I do to prevent bronzed peppers? A number of preventive measures need to be taken:

be sure to disinfect the seeds before planting;
you can't plant peppers next to a flower bed;
get rid of weeds in time;
appearing diseased leaves must be disposed of, they are cut and burned;
Advice from experienced gardeners: "Fight the disease with Fundazol."

Serious tobacco mosaic disease can destroy the entire crop or significantly reduce its quantity. The causative agent is a virus.On the plant you can see the leaves with a marble pattern. Yellow, dark and light green blotches alternate. The leaves curl, development stops, the fruits form small and do not ripen. Brown spots can be seen on the peppers.

How to deal with the virus? To prevent pepper mosaic, you need to treat the seeds before planting, do not plant in the same area for several years in a row. From folk remedies, a solution of whey and iodine is effective.

Another disease that affects peppers is pepper blossom end rot. It develops when the plant cannot provide the fruit with calcium.

The factor in the development of the disease is not only calcium deficiency, but also the presence of viruses, bacteria or fungi on the surface of the fruit.

At first, dark green spots appear at the base of the fruit, which eventually turn brown. The damaged area shrinks and becomes dry.

As a preventive measure, measures such as keeping the humidity in the greenhouse, loosening and weeding the soil, regular watering help. Mulching is recommended. At least three times during the entire growing season, it is useful to carry out root dressing, for example, with calcium nitrate.

Fungal attack

Significant damage to the crop can bring such a fungal disease as late blight. The spores can be airborne and stay in the soil for a long time.

First of all, the leaves get sick. Brown spots appear on them at first small in size. They increase with great speed and spread throughout the plant, including the fruits. A light gray coating can be discerned on the surface of the spots.

In dry weather, the leaves curl up and dry out. If the weather is rainy, then black spots develop on the leaves and rotting cannot be avoided.

Drugs that can stop the spread of the fungus in peppers and prevent infection of all seedlings: Alirin B, Gamair, Oxyhom, Ordan, Fitosporin M, Quadris.

If the lower part of the stem of the pepper has darkened, the cause may be a fungal disease such as black leg. The infection most often affects seedlings, but an adult plant can also get sick. The pathogen enters the plant through the soil or along with infected seeds. Spread factors are too frequent planting of seedlings or a poorly ventilated greenhouse. The place begins to dry out, rot, after which the entire seedling dies.

The fight against the pathogen can be carried out in the following ways:

should inspect plants daily;
at the first detection of the disease, it is recommended to make a solution of potassium permanganate and pour it over the soil;
the soil must be disinfected before planting seedlings, preparations such as Baikal, Radiance are suitable;
recommended treatment of seeds with drugs that increase immunity: Epin, Agate;
be sure to observe the irrigation regime;
the room must be ventilated, avoiding drafts.

The appearance of Fusarium wilt of peppers also belongs to fungi. Spores clog the vessels inside the stem, and the plant ceases to receive nutrition and moisture. The leaves of the seedlings turn yellow, curl. Fusarium wilt of pepper is not subject to treatment. If a diseased sprout is found, it must be destroyed immediately.

Prevention consists of the following actions:

choose varieties of peppers that show resistance to Fusarium;
seeds must be treated with special preparations, for example, foundationazole;
after harvesting, remove the old tops.

In the greenhouse, bell peppers often suffer from cladosporiosis, you can suspect it when the leaves have darkened.

The fungus is active especially where there is high humidity. Brown spots develop on the outside of pepper leaves. From the inside, a gray coating can be observed.

How to treat cladosporiosis and main preventive measures:

in autumn, after harvesting, it is imperative to disinfect with copper sulfate;
choose a different place to plant peppers every year;
when a disease appears, it is recommended to reduce watering and air humidity in the greenhouse;
you can cure the plant with drugs such as Barrier, Barrier.

Gray rot is provoked by fungi. It may occur due to high humidity. First, brown dots appear on the lower part of the stem. Then black spots may appear on all parts of the plant. As the infection progresses, the entire plant becomes moldy.

Control measures to prevent and treat fungal diseases of pepper:

keeping distance during landing;
maintaining normal temperature and humidity;
often found in reviews: “Treatment with Fitosporin, Fundazol or Previkur helps to get rid of the disease. We process beds even for preventive purposes.”

Due to frequent rains, high humidity, sweet peppers are affected by streptoria. White spots appear on pepper leaves, which can be of different sizes. E

If you do not start the fight, then the leaves turn white, wrinkle, dry out and fall off. The first signs are observed first on the lower leaves, the top gradually begins to lighten.

The fungus often affects a weakened plant, so you need to monitor the top dressing, lighting and soil moisture. A diseased plant should be immediately removed from the garden. The remaining seedlings are recommended to be treated with preparations containing copper.

Greenhouses can become an environment for the appearance of a rust fungus. A rusty coating forms on the leaves. In case of severe infection, the plant dies.

When growing pepper seedlings at home, you can also encounter the diseases listed above. Very often, pathogens infect young, immature vegetation. Therefore, it is so important to start doing prevention at this stage.