What if the leaves of cucumbers dry edges?
Cucumbers are a very difficult culture to grow.The ability to get a good crop of cucumbers is expensive, it requires a high level of professionalism and practical experience. Especially a lot of effort must be spent on the proper preparation and cultivation of seedlings, as well as on the prevention and treatment of diseases of this vegetable. What if the leaves of cucumbers dry edges?
We find out the reason
Cucumber is quite a capricious plant and very capricious. It requires careful maintenance and compliance with the regime of watering and feeding. Growing seedlings is not easy and requires certain skills. The slightest deviations from the regime immediately affect the appearance of the seedlings, the leaves wither and dry. The illnesses that occur most often are:
- yellowing of the leaves;
- dry edges of the leaves;
- yellowing seedlings in the greenhouse.
Such diseases can be triggered by several reasons that are recommended to know ahead of time. First of all, external factors are important:
- temperature;
- humidity;
- lighting.
Also the cause of yellowing and wilting can be harmful insects that feed on plant sap and root system. External factors have a significant impact on the development of any plants. To garden culture is not dried, it must be watered, this is understandable. But when there is too much moisture in the soil, it also adversely affects the root system, it begins to rot. If you do not take action, the plant dies.
It should also be remembered that cucumber leaves are afraid of direct sunlight. Ultraviolet rays can cause foliage burns. Fatal cause of yellowing leaves can be bad seeds. When this happens, in this case nothing can be done, the harvest is doomed to destruction.
It is recommended to buy seeds only in those outlets that have a good reputation and relevant documents confirming the quality.
First of all, you should pay attention to watering, very often it is unregulated watering that causes the leaves to turn yellow. It may be necessary to apply more fertilizer, but this is a double-edged sword, as you can go too far with them, and then the result will be sharply negative. Important fertilizers for young shoots are nitrogen and manganese.
It is possible that the seedlings do not have enough space, therefore, part of the seedlings is recommended to be transplanted into a separate container. Not all plants love when they are transplanted, especially cucumbers, so it is better to do this in advance, then there is a chance that the young shoots will not die. It is important to pay attention to where young plants grow. If cold drafts are present, then these are not the best conditions. As already mentioned, cucumbers are gentle, heat-loving plants and a cold “breeze” is an undesirable factor for them.
Diseases and pests
Spider mite is a formidable enemy of vegetables in the garden. It occurs quite often, so you need to be able to deal with it. The simplest and most effective tool in the fight against this pest is a soap solution. The plant is not afraid of this mixture, but for the insect it is deadly. Also similar to the composition is suitable for combating aphids. Iskra and Fitoverm are also used. Another serious attack is the leaf-maker, its lime can only be done with the help of fungicides.
The plant is often exposed to various fungal diseases, the most dangerous enemies:
- sprout fly;
- white-winged aphid greenhouse;
- powdery mildew;
- Fusarium;
- brown rot;
- aphid melon;
- spider mite
The last two pests most “love” cucumber seedlings. Seedlings are also susceptible to infection with powdery mildew. It looks in such a way as if the leaves are sprinkled with flour, while the leaves turn yellow and curl into tubes. Root rot is also a formidable opponent. Most often occurs in marshy or waterlogged places. Mealy dew finds itself bright spots on the leaves, they steadily grow and "eat" the entire leaf, it dries and turns yellow. The following chemicals are suitable for prevention of powdery mildew:
- "Topsin";
- "Ballet";
- "Kratan".
Carefully monitor the dosage, for young plants too high a concentration can be detrimental. Powdery mildew is a disease that is triggered by a fungus, the chemical "Fitostorin" is effective against it. In Russia, cucumbers often suffer from peronosporoza. It is recommended as a preventive measure to stop the choice on varieties that can effectively resist this scourge.
Fusarium wilt is a pathology that occurs in a greenhouse and is extremely dangerous. The fungus passes through the capillaries and "clogs" all the ducts. Inevitably saplings and plants die. You can only fight with fusarium wilt if you change the soil to 100%. If vertex rot appears, you should think about the correctness of watering. The best option is to water the seedlings twice a day in the morning and in the evening. Water is recommended to first defend.
Such a pest as a greenhouse whitefly is very afraid of the composition “Konfidor”, and the Strela means is effective in combating the germ fly. When root rot occurs, the soil and drainage should be checked, it is possible that the root system may become swampy and rot.
Improper care
There are soils too acidic, in this case, the topic of reducing acidity is relevant, as the ideal soil is neutral. Sometimes slaked lime comes in handy. It is a natural product and has a universal effect. Heavy chemistry is often harmful to both plants and humans. An important cause of the dried edges of seedlings is an imbalance of trace elements in the soil. For cucumbers, these microelements are primarily needed:
- potassium;
- manganese;
- sulfur;
- nitrogen.
If there is a shortage of any of these elements, the plant begins to wither and fade. Everything is good in moderation, and if these useful components are present in an excess of, it will also adversely affect the appearance of the plants, pigment spots appear, the root system can be affected. Equally harmful for seedlings as excessive watering, and the presence of too much moisture in the soil.
If the edges of young shoots have become noticeably yellow, then it is possible that the pots with seedlings stand in the sunlight for too short a time. When the cassette capacity is small, it can also adversely affect the development of seedlings. Low temperature also has a negative effect, with the most acceptable temperature being just above twenty degrees Celsius. If the temperature is below +18 degrees, then the metabolism of nutrients may be disturbed. If the seedlings are not planted in time, it will become an overgrowth, which is also not positive news. This factor will certainly have a negative impact on the quality of the crop.
Watering seedlings with too cold water can provoke various diseases in which the leaves soften and a yellow patina forms on them. It is very important when growing cucumber seedlings to monitor the temperature, it should not fall below 25 degrees. In cloudy time, seedlings require additional lighting lamps. If the plant overgrows, it should be transplanted as a matter of urgency, otherwise it will die. It is also important to plant the plants on time, "overgrown" will not take root well in the ground, when the weather is favorable.
If the summer did not succeed, the weather is damp and cold, then this is bad news for cucumbers. Perhaps the appearance of defective ovaries and rotting. In this case, it is necessary to do prophylactic spraying with one percent bordeaux liquid or 0.5% chlorine dioxide. There is also the threat of ovary overload; this is also reflected in the full development.
It is recommended to leave no more than three dozen ovaries. When new inflorescences appear, they should be removed.If you do not follow this process, the cucumbers will be small and yellow.
Eliminate the consequences
In order to get a high yield of cucumbers, one should pay special attention to the soil. Cucumbers have an extreme sensitivity to the quality of the soil, as well as a high concentration of fertilizers in it. When the growth of a plant begins, it is necessary to make additions of nitrogen compounds in large quantities, they will ensure good flowering. It is also required fertilizing urea, it is diluted in a concentration of 10 grams per bucket of water (that is, one teaspoon per ten liters).
From the color of the leaves, it is easy to determine if there is enough nitrogen in the soil, the leaves are lightened, and growth slows down.
Another element is also important - it is potassium. Its shortage also leads to slower growth, while the fruits themselves dry out, have a narrowed appearance at the edges, resembling a pear. In this case, the edges of the leaves are surrounded by a clarified border, and often their wilting also occurs. It is very easy to determine from the leaves how good the soil is for these plants. The middle of the sheet begins to swell, and the edges twist a little. Treat these ills best ahead of time. To have detailed information about them is extremely necessary. Yellowing of cotyledon leaves indicates a lack of lighting.
You should also remember that the presence of a large concentration of fertilizer leads to ammonia intoxication of the plant. As a result, the foliage turns yellow and dies. Bordeaux solution will help bring the plant back to life. Can be effective compositions "Acrobat", "Bravo". Without proper crop rotation, it is impossible to grow full-fledged crops. It makes more sense to grow one crop (cucumber) every three years. In greenhouses, the soil is changed every year and it is treated with various biofungicides (“EMM - 1”, “Baikal”). These compounds effectively eliminate the threat of the influence of pathogenic microorganisms. It is necessary to constantly add fertilizing and mineral compounds. The simplest and most effective top dressing is adding ash and special herbal infusion to the hole.
Prevention
Plants are constantly in need of preventive care, only this can protect them from poor growth and the harmful effects of parasites. First of all, it is recommended to get rid of old plants last year. Each of them contains “generic marks” - various insects and harmful microorganisms. In this case, effective insecticide chemicals such as:
- "Boyleton";
- "Pharmamode - 3";
- "Aktelik."
Special checkers are also used (one unit per 15 cubic meters of greenhouse) “Climate” and “Fass”.
Processing in this way protects young seedlings from infection with specific ailments. After last year's plants are removed, the film and supporting structures of the greenhouse are treated with a special solution at the rate of half a glass per bucket of water. Most often, Pharmamood - 3 is used for this purpose. Also, it is imperative to process the seeds, which often can also generate infection.
If you do not do this operation, the harvest may simply die. Seeds are pickled with "Aliirin-B" and "Gamar". Usually diluted in one liter of water, five tablets of each composition.
A priori, it is clear that pathogens of various diseases are present in the soil. Therefore, in a seedling container with a volume of about 850 ml, one should place the tablet "Gaoccladine" together with the seed. This is an effective biofungicide, based on the presence of the fungus Trichoderma. Spores of the fungus are very useful, they crowd out all pests. It is important to follow strict instructions and install the tablet, as prescribed. After planting, after about a week, water the seedlings with a solution from Aliyirin and Gamair. Such procedures highly protect future cucumbers from infection.
For more information on what to do when the leaves of cucumbers dry, see the following video.