Why do tomato leaves curl in a greenhouse, what to do

Tomato leaves can curl for a variety of reasons. Let's look at the main cases, and what can be done in this situation.

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The leaves can curl after transplanting the plants to a permanent place, because the roots are damaged, even with careful handling from cups. After a couple of days, it will be seen whether the plant will take root or die. Most often, tomatoes quickly adapt to new conditions and continue their development further.

Oversupplymoistureorherdisadvantage

With a lack of moisture, the leaf blade curls inward. The plant, as it were, saves the water that is in it. With an excess of moisture, the tomato bush twists the leaf plates in reverse.

Watering should be done early in the morning or late in the evening. When setting fruits, the tomatoes should be moisturized abundantly.

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The optimum temperature for the normal growth of tomatoes is +25 degrees during the day and + 18- + 19 degrees at night. As the temperature rises, the plant begins to experience stress. The leaves also curl.

Excessintroducednutritiouselements

If the leaves of the tomatoes are bent and the underside of the leaves becomes purple, then the plant has received an excess of zinc. With an excess of manganese, the leaves become saturated green in color and wrinkle. With an excess of nitrogen, tomatoes begin to fatten. The leaf blades become dark green, they curl, the stem thickens.

In these cases, it is necessary to stop fertilizing the tomatoes for a while, and reduce watering to a minimum.

Disadvantagenutritiouselements

With a lack of calcium, the leaves curl upward, the fruits suffer from apical rot. To cope with this problem, you must use calcium nitrate.

With a lack of phosphorus, the leaves of tomatoes acquire a grayish or purple hue and curl. In this case, superphosphate must be added to the soil, which is preliminarily diluted in hot water, otherwise the elements will be in a form that is difficult to access for plant roots for a long time.

With a lack of copper, the leaves acquire a yellowish tint and curl. To resolve this situation, you need to add copper-containing substances.

Lack ofpinching

If you do not remove stepchildren from tomatoes, they can also bend. The bush thickens, and if you start the plants, then in the future the tomatoes will experience stress when simultaneously breaking off a large number of overgrown shoots from the leaf axils. They must not be allowed to reach more than 5 cm.

Diseases

In diseases such as bacterial tomato cancer, the leaves can also curl, wither along with the stem, which is associated with disturbances in the culture's conducting system. When a leaf or stem is cut, darkening of the vessels is visible.

In this case, the plants can no longer be saved. If the fruits are affected (local infection), then you can still apply 0.2% "Fitolavin-300" or the drug "Gamair", which is sold in tablets. They are dissolved in water and sprayed with tomato bushes.

Most often, these diseases occur with thickened plantings. This is a dangerous disease that usually develops slowly. Therefore, it is necessary to observe the necessary distance between plants when planting in the ground.

Pests

Aphids, whiteflies, spider mites can settle on the lower part of the leaf.

Aphids suck the juices out of the leaves, so they curl up. Garlic infusion can be used against spider mites and whiteflies. An ash solution with the addition of laundry soap helps from aphids.

Now you know about the reasons for curling leaves in tomatoes and preventive measures to combat this phenomenon.

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