Content
Caring for plants always requires certain knowledge. Even experienced specialists can make a mistake and not understand why the leaves of cucumbers wither in a greenhouse.
The fact is that cucumbers are quite capricious vegetables that require special attention. There can be many reasons for the death of the entire crop:
- Lack of moisture in the soil.
- High or low air humidity.
- Violation of the temperature regime, sudden changes in temperature.
- Excessive watering.
- Lack of light.
- Direct exposure to sunlight burning plant leaves.
- Fungal diseases of the root system.
- Pests that spoil shoots and leaves.
- Lack of minerals in the soil.
- Close proximity to other vegetables.
The first thing that comes to mind when the leaves of cucumbers in a greenhouse begin to dry and curl up, plants lack moisture. This vegetable needs regular watering, especially if grown in a greenhouse, where the temperature can be much higher than in open ground. The plant needs moisture, along with light, for photosynthesis, with the help of which nutrition, division and growth of new cells occur.
If the root system lacks moisture, the leaves of the plant curl to reduce the area of evaporation and retain as much liquid as possible necessary for development. This can happen with irregular watering.You can cope with the situation by simply watering the cucumbers more often.
Increasing watering sometimes does not help correct the situation. Limp cucumber leaves may also indicate excess moisture, which is retained at the roots in large quantities, causing rotting. You can avoid such troubles by following the regime of watering cucumbers in the greenhouse:
- In hot weather, plants are watered once a day, strictly early in the morning or in the evening, after sunset. Water consumption - no more than 9 liters per 1 sq. m.
- The water should be at room temperature. Cold liquid can damage the root system of a heat-loving vegetable and cause root rot.
- You need to water the cucumbers using a watering can, directing the water pressure under the root. If moisture gets on the leaves, especially on a hot day, this can lead to the gradual death of the cucumber, since water droplets act like a magnifying glass in the sun. You can simply burn the leaves and shoots of vegetables.
If regular and proper watering does not help to find the answer to the question of why cucumber leaves wither, you need to look for other reasons.
Excess or lack of fertilizers
Before planting cucumbers, the soil is treated with substances to kill pests. As the plants grow, this treatment can also be carried out using various fertilizers. Gardeners often use chemical fertilizers and fertilizers, which fall into the category of herbicides.
But a large amount of such substances remaining on the leaves can cause them to curl from the edges to the center, dry out and fall off.
Solving the problem is very simple. You just need to generously spray the cucumber bushes with plenty of water. This will help wash the herbicides off the visible parts of the vegetable and direct the excess into the soil.Fertilizers, especially foliar fertilizers, must be used with caution, strictly following the instructions. Despite the fact that these substances help accelerate the growth and fruiting of cucumbers in a greenhouse, their excess is harmful to vegetables.
Curled dry leaves may also indicate a lack of minerals: nitrogen, phosphorus, sulfur, potassium.
The root system of vegetables is weak, it is located near the surface, so the plant cannot always get enough nutrients from the soil. In this case, you can purchase fertilizers based on special industrial chemical compounds or fertilize the cucumbers with manure, compost and chicken droppings. These folk remedies for caring for vegetables have long proven their effectiveness.
Pest Control
There are a large number of pests that can appear in a greenhouse if the soil was not well treated before planting seedlings. The most common reason that can destroy a crop is these are different types of rot. Root rot can be identified by limp leaves and dark brown plant stems. If rot has already affected the roots, then simply reducing watering will not be enough. It is necessary to treat the plant with special means.
The drug "Trichodermin" combats this problem well.
There are other diseases that are destructive to plants. Most often, cucumbers in a greenhouse are affected by fungal diseases. The most common of them is white rot. It can be recognized by dry leaves covered with a white coating. This disease can be prevented by treating the soil and seeds before planting. You can help infected plants with the help of drugs such as Fitosporin, Gitrauxin, Kornevin.
The simplest precaution when growing cucumbers is to regularly spray the vegetables with a weak solution of potassium permanganate.
Different types of rot are not the only problem that arises for people growing cucumbers in a greenhouse. The entire vegetable harvest can be destroyed by well-known pests: aphids and mites.
Remedies for aphids and ticks
Aphids are recognized very easily. These small insects feed on the leaves of many plants, cucumbers are no exception. Cells in a damaged leaf cannot participate in photosynthesis, the production of nutrients. The leaves are turning yellow, dry and fall off, and the entire cucumber bush gradually dies.
A simple remedy for aphids, which does not require additional costs, can be quickly prepared at home. This is a regular soap solution. If treatment with a soap solution is not enough, you can buy the drug "Iskra", which does an excellent job of killing aphids without harming cucumbers. You can also fight ticks yourself. The best remedy for these pests is an infusion of onion peels. It is prepared very simply:
- A handful of onion peels are poured into 1.5 liters of water and boiled for 5 minutes.
- The solution is cooled and filtered.
- The resulting tincture is used to treat shoots and leaves.
Conclusion
The right place for planting, careful watering, regular loosening of the soil, timely fertilization of cucumbers and pest control help to avoid vegetable diseases and get a rich harvest in the greenhouse.
