Why are tomato leaves curled in a greenhouse

23-10-2018

Tips and ideas

If tomato leaves curl in a greenhouse, what does it mean, and what to do? This is an extremely unpleasant symptom for gardeners. His deceit lies in the fact that the transplanted seedlings first develop well, pleasing the eye, and then suddenly the leaves begin to curl, turn yellow and fall off.

Curling leaves of tomatoes

Problems caring for tomatoes

The biological meaning of leaf curling is that they dry up as if they are in a state of severe drought and scorching sun. How is this possible?

The leaves twist, turn yellow, dry out, and then fall off, because the roots have just been replaced by seedlings that have just been transplanted. This can occur when transplanting too small, fragile seedlings, as well as due to the fact that they tolerate sprouts too late - when they stretched out and weakened in conditions that were inconvenient for full development. However, a similar situation can occur in already grown tomatoes. Most often, the roots are damaged due to improper transplantation, the appearance of pests that feed on the roots, and excessive moisture, which contributes to the development of rotting. If young bushes twist, there is a probability of recovery and normal development, but in the later period the prognosis is not so favorable.

Wrong watering. Tomato - a capricious vegetable. It does not tolerate too much moisture, but does not like drought either. The soil should not be wet or very dusty. If the leaves of the plant curl along the central axis, forming a boat, then the tomatoes clearly lack water. Tomatoes behave in a similar way if you overdone and fill them. Root hairs are immersed in fact not in the soil, but in its aqueous solution. They suffocate in an oxygen-free environment and therefore, being in water, they cannot consume moisture.

Pinching and pinching produced not by the rules. Why does this simple procedure cause the leaves to dry out? The reason is simple - excessive diligence of the owners, manifested in the mass removal of all the lower leaves immediately after transplantation. It is difficult for an immature plant to withstand such a test, and it dies from an imbalance in the functioning of photosynthetic organs, in contrast to those that only breathe, that is, oxidize. As a result, the tomato is dying of hunger.

Long maintenance of excessively high temperature in the greenhouse. Twisted leaves may appear even if the optimum moisture level is maintained around the clock in the greenhouse. Tomatos, despite their tropical origin, heat is contraindicated. Plants are able to experience heat stroke with the oppression of all physiological temperatures. The activity of photosynthesis also decreases. In such conditions, any plant begins to get rid of what stops working, but continues to consume energy. Leaves and fruits become such extra organs.

Watering with a bucket without damaging the tomato bushes

The maximum allowable temperature is 35 ° C. After that, you need to take emergency measures.

Soil and pest problems

Disruption of the chemical balance of the soil. With a deficit or an excess of one or another element, the plant dies in some cases precisely by dropping leaves. This is usually a sign of overuse of mineral fertilizers.

With a deficiency of potassium, the stem of the plant is deformed, the leaves curl and fall off. With an excess of potassium, the edges of the leaflets first die, and then the leaves themselves. Under magnesium deficiency conditions, the lower leaf blades turn yellow, curl and fall off.

If the plant leaves are not just spun, but there are still a number of other signs, for example, too wide stem and strong and big stepsons, then this indicates an excess of nitrogen. The fact is that excess nitrogen does not allow root hairs to assimilate elements such as potassium, phosphorus and zinc. As a result, against the background of an excess of one element, the lack of another is formed.

If there is a deficiency of potassium, then in parallel with drying, there may be a change in the color of still living leaves from green to brown with yellow streaks. Similar processes occur with a lack of phosphorus. In this case, the veins of the leaves become purple, and the leaf blades themselves acquire grayish-green shades.

Unpleasant consequences in the form of twisting and falling leaves may cause a deficiency of the following elements:

zinc;
boron;
sulfur;
copper.

Fertilizing tomatoes with mineral fertilizers

Diseases of various origins, damaging not only the leaves, but also the roots and stems. Characteristic signs of infectious diseases of tomatoes are:

mosaic pattern on leaves;
blistering leaves on the leaves;
withering shoots;
the appearance of light bloom in conditions of high humidity;
the appearance of pinkish plaque in the root of the neck.

Actions at occurrence of dangerous symptoms

First of all, do not do something that makes the leaves curl around the tomatoes. If you poured too much water, dig up the earth and after a day grumble it. So it dries out faster, and a layer of mulch will save it from unwanted draining.

Mulching tomatoes to preserve moisture in the soil

Greenhouses need to be ventilated in any weather, except, perhaps, cold and windy. So you can avoid overheating and waterlogging.

The soil intended for planting seedlings, you must always prepare carefully. Manure and minerals in advance, better in September, as soon as the last harvest is gathered. Dung need to dig deep. Fertilizing with mineral fertilizers is best done in reduced quantities - do not forget that all this is already in the ground.

Infected plants must be removed and must be burned. The place where the sick tomato was growing is treated with copper oxychloride solution. It is necessary to dilute 60 g in 10 l of water. Flood the earth in a radius of a meter. It would be nice to handle and neighboring bushes.

Lack of batteries in tomatoes (video)

Tomato content is troublesome, not always grateful, but time consuming. If you want to have a good harvest of the most popular vegetable after a potato, you will have to know a lot, be able to do it.