Diseases of pepper leaves: descriptions with photos, treatment
Despite the popularity of pepper and the variety of its varieties, it is still a rather capricious culture. She often suffers from fungi, viruses, pests and other diseases. To notice symptoms in time, regularly inspect the leaves on the beds. We tell you what changes happen and what they testify to!
Pimples and tubercles on the leaves
Periodically, pests settle on the leaves, lay eggs and leave their waste products. This is the most common reason why plates are covered with tubercles, although not the only one!
- On the pepper, large tubercles form due to aphids, which thus multiply and leave galls;
- Small pimples of a light green shade are an odema or dropsy, and they form due to edema. Basically, the reason is constant overflow, lack of light or too low temperature;
- The growths on the reverse side occur when planting pepper in a greenhouse. When the soil is too warm and the air is cold, metabolic processes of the plant are disturbed;
- Sometimes small pimples can be a kind of annoyance. This is a reaction to stress after transplanting seedlings to a place with radically different conditions;
- Tubercles resembling warts, whiteflies leave behind;
- Oval large growths, which can not be eliminated, appear due to scabies.
Leaves turn yellow and dry
The reasons why the leaves turn yellow are dozens, from natural biological processes to serious diseases. Sometimes the matter is in violation of agricultural technology and the conditions of the pepper.
- When yellowness evenly disperses along the leaves from the veins - the cause may be a lack of iron;
- The leaves turn yellow and dry from the tips up when they are low in calcium. And if they also begin to die, the problem is a deficiency of boron. It is better not to guess and immediately take advantage of a comprehensive balanced feeding;
- Chaotic yellow spots, interwoven into mosaic patterns, indicate the disease of the same name. There are several types of mosaics, but they are all incurable;
- Lack of moisture on hot days is another reason why pepper leaves look and feel painful;
- If you water the garden at the height of the day, burns may remain on the leaves;
- When the lower leaves turn yellow and fall first, it is time to feed the pepper seedlings with fertilizers;
- The leaves may turn yellow due to a sharp hypothermia if frost breaks out or forget to close the balcony.
Brown spots on the leaves of pepper
In the form of dark spots, fungal diseases are most often manifested. They develop especially actively on warm, humid days, in the most comfortable environment for themselves.
- The leaves darken, as if swelling and softening when they rot. Urgently reduce watering and prophylactically treat pepper from fungus;
- The leaves darken, and the veins turn purple when affected by mycoplasmosis. The disease begins with the upper young plates and gradually passes to the lower;
- Brownish and as if watery spots, which eventually cease to ulcers, leave bacterial spotting;
- In wet weather, brown spots, gradually turning gray or blacken, are a symptom of vegetable brown spotting;
- Brown spots, tumors, ulcers and other defects on the leaves and shoots leave bacterial cancer;
- Yellow-brown spots and deformed stems - the consequences of the fact that the nematodes destroy the root system;
- One more fungus leaves dark spots - cladosporiosis. Its peculiarity is that on the reverse side these spots are covered with an olive coating.
The pepper turns black leaves
Necrotic foci indicate an advanced stage of the disease, although less often pepper can turn black for other reasons. The most sensitive to external conditions is young seedlings.
- Black necrotic spots on the leaves and fruits appear due to alternariosis;
- Young shoots blacken and die when affected by late blight. Dark spots appear on old leaves and on the root neck;
- Black spots with white dots and a greenish halo are a sign of cercosporosis. Very often it affects only the lower leaves.
White plaque on pepper leaves
Fungal lesions are not only spots, but also a characteristic plaque that is left by mycelium with spores. Although sometimes inexperienced gardeners confuse with a white coating a thin translucent web.
- The main creator of the white web on pepper leaves is a spider mite. Most often, he hides on the back of the leaf;
- Light spots with a slight grayish tint remain when affected by gray rot;
- White plaque, reminiscent of velvet or tiny hairs, leaves powdery mildew;
- Practically no different in manifestations or in treatment - downy mildew, but it is darker.
Pale and light leaves
Pepper can not only become stained, but also seem to completely fade. New young or already tall old leaves fade - and there are several reasons for this!
- The leaves of pepper immediately grow weak and pale, if they do not have enough nitrogen during the growth of greens;
- Young leaves grow faded and weak in violation of agricultural technology;
- Large white spots that spread throughout the sheet appear due to another kind of viral mosaic - alfalfa.
Pepper leaves curl
When the leaves curl, twist or warp, this is an alarming sign, because the problem may be in the virus. Although there are several less radical reasons!
- Pepper leaves may curl if they are sorely lacking in light. Most often this happens with home seedlings, so you should take it to the balcony;
- Sometimes large leaves curl up if the planting is too thickened. They simply lack space and oxygen;
- The leaves curl, wither and wilt due to verticillus wilting. Usually after that they do not fall, but remain hanging.