Why pepper sheds leaves and what to do?
Pepper is a fairly common crop to grow, and many gardeners are happy to place several bushes on their site. So that the pepper does not get sick and pleases with its fruits, it is necessary to pay a lot of attention to it. But when the problem has already arisen, and the bushes turn yellow, and then the leaves fall, it is necessary to understand its root cause. The answer will be found in this article.
The reasons
Peppers have many reasons to part with their foliage. Perhaps such a reaction does not bode anything terrible, or perhaps right now it is necessary to quickly carry out a series of rescue procedures. But first things first.
- Light. From the moment a sprout appeared from the ground, you need to monitor its condition. And the first thing that can affect well-being is the degree of illumination. The lack of such a factor, whether sunlight or artificial, will provoke seedlings to stretch. If this goes on too long, the pepper sprout may become exhausted and begin to lose its foliage.
- The soil. The cause of the problem may lie in acidic and heavy soil. Peppers will not like to grow in such conditions. And strangely enough, its subsequent reaction will be manifested in yellowing, followed by dropping of leaves.
- Diseases. The soil initially infected with bacteria or fungi will probably be unacceptable for the life of immature seedlings. And you also need to be prepared for the fact that pests can emigrate from another place and harm the plant.
- Space. No need to save money by allocating small containers for seedlings.In cramped conditions, the plant will begin to tangle and rot the roots. This will significantly reduce the supply of nutrients, which will lead to a number of other problems, including leaf shedding. If it is possible to plant peppers on time, then, of course, you can use small peat pots. But if there is still at least a month before planting, the growing container should be large, about 0.5 liters per plant.
- Lack of moisture. In dry weather, especially before transplanting into open ground, it is very easy to miss the drying of the earth in a pot.
- Excess moisture. Overwatering can also cause leaf loss in peppers.
- Temperature. Far beyond the temperature regime (less than + 12 ° C at night and above + 26 ° C during the day) is another common cause of the problem.
- Transfer. This is just the case when, in order to cope with leaf fall, you just need to wait. Planting pepper in a new place is almost always accompanied by stress, which can manifest itself in the form of yellowing of the leaves with their further fall.
This situation does not pose a potential threat to the life of the plant. Of course, provided that the pepper did not begin to shed its foliage even before transplanting.
- Minerals. A mineral-poor soil will not be able to meet the high nutritional needs of peppers. First of all, nitrogen deficiency will manifest itself. Starting from the lower leaves and above, their green color will gradually change to yellow. And with a long-term shortage of the mineral, everything will not be limited to yellowing, and the plant will begin to lose foliage. In addition to nitrogen, one cannot do without such important substances as phosphorus, potassium, calcium, iron and others. How to prevent mineral starvation in pepper will be discussed below.
- Sunburn. The problem is more relevant for regions with a very active summer sun. On days when the sun's rays carry a critical amount of energy, an uncovered bush, especially young seedlings, can get a sunburn. But, on the other hand, pepper is a photophilous plant. Therefore, in such conditions, you need to competently plan a place for growing, maneuvering between the sizzling sun and a deaf shadow.
- Water temperature. Anything that can lead to a shock state of the plant, one way or another, will affect the health of the foliage. By watering with cold water, the risk of damaging the root system increases, which then will not develop properly. This will inevitably cause complex damage to the pepper.
- Pests. Some small insects will also want to taste delicious bell pepper, but not its fruit, but the leafy part. Plant juices will act as the main dish for pests. Leaves from such exposure will not be able to stay with the plant for a long time and will soon leave it.
Treatment
As it became clear, there are quite a few factors that can lead to dropping foliage. Based on the list above, some problems can be easily prevented, but others require detailed consideration. To begin with, it is worth highlighting those measures that will be aimed not at momentary treatment, but at preventing the disease.
Prevention
As mentioned, heavy and acidic soil is by no means the best substrate for growing peppers. In order for the culture to develop without complications, you need to prepare everything. The introduction of rotted manure or humus in the fall will help improve the structure of the earth, making it looser. And the problem of acidification will be perfectly solved by adding wood ash or chalk.
Besides, Improving soil quality in this way will prevent another common problem from developing: mineral deficiencies. Manure or humus in this case will act as a very capacious source of nitrogen. And wood ash simply leaves no chance for the development of a phosphorus deficiency. And with other important minerals, there will also be no problems with such a complex introduction of these elements.
Another preventive measure is disinfection of the substrate where it is planned to grow sweet peppers. The fact is that many pests are able to overwinter in the ground without much difficulty. Even if at the time of the autumn harvest there were no signs of the appearance of parasites, this does not give any guarantee that insects or fungi did not have time to settle in the new territory. Therefore, prevention never hurts.
If the amount of land is small, for example, the volume that seedlings need, then you can use the thermal method. Freezing the soil for several days or calcining it in the oven with a high degree of probability will not allow the seedlings to get sick.
When it comes to disinfecting large amounts of land, which is especially true for greenhouses, then calcination is clearly not the best method here. In this case, the microbiological preparations "Gamair", "Fitosporin" and others are well suited. To date, a large selection of such funds has already been presented, aimed at combating both insects and fungi. At the same time, without losing the quality of the substrate itself, even in the long term of use. It is still possible to specifically combine plants and environmental elements to create a bio-shield from various ailments, but this is a separate issue.
Operational measures
Diseases and pests that can lead to leaf fall on pepper do not always winter in the ground next to the plant. They may appear suddenly. Let's figure out what to do in this case. First you need to figure out the type of attackers, insects or fungus.
spider mite
Small white dots on the foliage will indicate the appearance of a spider mite. These insects are unlikely to destroy the plant, but the yield will definitely be reduced. To control pests in the early stages, you can try picking them by hand or with a wet sponge, but this is a very laborious undertaking if you do not have a couple of diseased plants at your disposal. A more effective method would be the use of biological preparations, such as Biovir, Nissoran, Fitoverm and others.
Aphid
A more dangerous pest compared to the tick is the aphid. You can find it with the naked eye on the back of the sheet. A colony of these insects is able not only to reduce the future harvest, but also to kill the plant by sucking out all the juices. The same drugs that are suitable for eliminating spider mites will help in the fight. And also aphids really do not like ashes. Therefore, spraying in the morning with a solution of wood ash with water will be a good solution.
Fusarium
A very dangerous and common fungal disease, Fusarium, leads to yellowing and falling off of foliage. Unfortunately, it is not always possible to say for sure that the pepper is affected by this particular disease. This is because fusarium at first looks like a nitrogen deficiency.
But then it acquires more distinctive features (twisting the leaves into a tube, withering of the upper shoots), noticing which you need to immediately take action. The best solution is to burn diseased plants.
Yes, no matter how unfortunate it may be, the fight against Fusarium in its active stage is ineffective.Better to keep what you have than to lose everything. The remaining plants are treated with Gamair, Previkur or Fitosporin.
Blackleg
Another dangerous fungal disease is the black leg. Based on the name, the main symptom of infection is already clear. The stem at the base of the plant darkens and thins, and the same changes occur with the foliage, it turns yellow and falls off. Having found the fungus in advance, you can try to deposit the infected in a separate place. And there already begin to treat with the same drugs that are used for fusarium. But it’s worth saying right away that there are not so many chances for a successful recovery in plants, therefore, having found a black leg, most often they are immediately burned.
Care rules
A number of simple plant care measures will help save those forces, who would otherwise go in search and elimination of various ailments.
- Do not pour cold water. It is better to leave a container of water for watering at home, then the temperature will be optimal.
- Water only after the top layer of the soil has dried out, so as not to create once again favorable conditions for the development of mold.
- Check soil moisture more often, especially for seedlings growing in containers. At least the simplest method is suitable for analysis: if a finger, deepened into the soil by one phalanx, does not stumble upon a wet layer, it's time to water.
- Regularly inspect plants for infection by fungal diseases or insect pests.
- Harden seedlings before transplanting into open ground, so as not to stress the plant, increasing the risk of infection with the same dangerous diseases.
- Choose the right greenhouse model so as not to violate the temperature regime. In the southern regions, this is an actual problem due to overheating during the daytime.
You can learn more about why pepper sheds leaves in the next video.