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Causes of yellowing of leaves on pepper in a greenhouse and methods for their elimination


For many plant growers, pepper has become a habitual vegetable crop grown in a greenhouse, which grows well indoors. Although this plant is thermophilic, it is not very demanding.

That is why many vegetable growers take up the cultivation of pepper in a greenhouse and greenhouse, not fully knowing all the subtleties that should accompany this process. And yet, it is precisely the non-compliance with the basic, it would seem, insignificant rules on the cultivation technology that can very badly affect the health of the pepper and its fruiting.

General rules

Despite the fact that for many summer residents for some reason it seems that pepper when grown in a greenhouse does not really need a protective structure, it is in closed ground that errors in caring for this vegetable plant are most often manifested.

The following nuances and features may affect the comfort of growing pepper in a greenhouse:

  • insufficient lighting, as well as too long or short daylight hours;
  • Incorrect soil and air humidity in a greenhouse or greenhouse;
  • the use of low-quality or in the wrong dosage of fertilizers;
  • non-compliance with the temperature regime in the greenhouse or greenhouse;
  • lack of insects that contribute to pollination;
  • watering the pepper with too cold water;
  • poor soil in the greenhouse;
  • exposure to pests and diseases;
  • improperly selected for growing in the same greenhouse with pepper plants.

Most often, vegetable growers are faced with the fact that the leaves or fruits of pepper in a closed ground turn black or yellow, and then completely die. Only knowing the main reasons why yellowing or drying of the green mass of plants occurs, you can decide on further actions aimed at correcting the situation.

Probable reasons

Many vegetable growers, when yellowing pepper, try to correct the situation and ask quite logical questions: why do the leaves of the plant turn yellow and why does the pepper turn yellow in closed ground and stop growing. Most often, the root cause of such metamorphoses lies on the surface and is in violation during the most important agrotechnical measures:

  • insufficient parameters of humidity in the air and soil of ridges when grown in closed ground cause a violation of the tugor of the green mass of pepper in a greenhouse or greenhouse, as a result of which the leaves turn yellow first and then fall off;
  • insufficient or inadequate nutrition of peppers when grown indoors, as a result of which pepper begins to react with changes in appearance;
  • sudden and unexpected changes in temperature indicators for the plant, causing yellowing or death of pepper in a closed ground. Leaves with a decrease in temperature turn yellow and gradually die;
  • leaves turn yellow if the pepper has undergone fungal or bacterial damage.

Leaves become the most reliable indicator in attacks of numerous insect pests, which, eating a green mass of pepper or plant juices in a greenhouse, make the bushes turn yellow.

If the leaves have lost color or changed shape, then it is worth thinking about eliminating the causes that caused such changes. The sooner therapeutic measures are started, the more chances there are to return the plant to a full life.

We also suggest that you read the article on greenhouse pepper pests and how to deal with them.

Why do the leaves of seedlings turn yellow

How to fix the problem

Such a vegetable crop as greenhouse pepper really needs to comply with certain moisture indicators, the violation of which adversely affects the general condition of the plant, reducing tissue stiffness and causing wilting. Sometimes it is enough to even out the moisture indicators to completely restore the health of plants.

Insufficiently or poorly fertilized greenhouse soil will not be able to fully nourish the plants grown in closed ground, which will necessarily negatively affect their health and appear in the form of yellowing or wilting.

Peppers need iron most of all, and its insufficient amount causes a disease called chlorosis. In this case, it is necessary to perform an unplanned dressing of plants with high-quality fertilizers based on trace elements.

Peppers are very thermophilic and any jumps in temperature or temperature changes cause weakening and disease of plants. Any short-term frost can cause the death of pepper in the greenhouse. It is very important to observe the timing of sowing and planting seedlings, as well as monitor the temperature in the greenhouse or greenhouse, performing additional cover of plants with film materials if necessary.

Preventative measures

If as a result of the inspection it was possible to identify a pest or disease, then special attention should be paid to preventive measures aimed not only at quickly eliminating the cause, but also further protecting the plants in the greenhouse from such a damaging factor:

  • high-quality and timely soil preparation, including deep digging and disinfection;
  • planting only healthy and strong seedlings of peppers in a greenhouse;
  • the acquisition and sowing of varieties or hybrids that have guaranteed resistance to most pests or diseases;
  • presowing preparation and seed treatment with special disinfectants;
  • the use of spraying with solutions prepared from plants that have a good antimicrobial or pest repellent effect.

It will be useful to recall that not only the construction of the greenhouse and the ground in closed ground needs disinfection, but also the entire garden tool, as well as the equipment that is involved in caring for the plants.

The best solution is regular inspections of all greenhouse plants, including pepper, which will help to notice any manifestations of plant diseases at the initial stage. The earlier treatment is started, the higher the likelihood of a plant returning to normal development.

As a rule, vegetable growers try not to resort to the use of highly toxic drugs, which on the one hand very quickly destroy pests, but on the other hand they can accumulate in different parts of the plant. The negative impact of such "chemical" fruits on the human body is obvious.

It is recommended to use chemical preparations only in case of ineffectiveness of folk and biological control agents, as well as if the infection is widespread and it is not possible to cope with gentle methods.

How and what to feed pepper

Carrying out high-quality irrigation of greenhouse peppers, the correct formation of its bushes, timely feeding and regular weeding with careful loosening will allow you to grow powerful and strong plants, free from flaws and abundantly bearing a very long period.


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