What causes tomato leaves to curl upwards? How to deal with it?

Tomato leaves are always rolled up, which is due to improper cultivation management, external environmental conditions, viral infection, etc. Leaf curl caused by improper cultivation management and external environmental conditions is physiological leaf curl, which is often distributed on the whole plant leaves, and there are no symptoms of vein mosaic leaves. Tomato leaf curling and atrophy is a common phenomenon in our lives, and the reason for this is that leaf curling caused by improper cultivation management and unsuitable external environmental conditions is physiological curling.

Only by analyzing specific problems, improving environmental conditions, and strengthening cultivation and management can we fundamentally solve problems. Leaf curling of tomato plants is a common problem. To solve the problem fundamentally, the first thing to do is to make more efforts to cultivate.

The suitable temperature for tomato growth requires the deseeding temperature to be about 25 during the day and between 15-18 at night.

In the summer and autumn high temperature season, measures such as covering shade nets, spraying mud, spraying coolant, and strengthening ventilation are usually taken to reduce the temperature of the shed. In addition, the demand for water in the summer and autumn high temperature seasons is relatively large, but it should not be watered blindly. Avoid watering at noon and choose low temperatures in the morning and evening.

At this time, the ground temperature is about 15, which is suitable for watering. At the same time, special attention should be paid to the amount of watering, and a small amount of water should be used frequently to avoid root damage caused by excessive watering. When planting tomatoes, we need to do pitting and pruning.

But pay attention to the coring time. If the pitting is done too early, it can easily lead to the propagation of axillary buds, so that the phosphoric acid in the leaves cannot be transported, and the leaves will also age, resulting in leaf curling. In addition, when pruning, it is not advisable to remove side branches too early.

If the pruning time is too early, the assimilation area of the leaves will be too small, which will affect the growth of the aboveground parts of the plant and the growth of the root system, resulting in leaf rolling. Temperature and moisture are very important in the full fruiting period of tomatoes. In case of high temperature and dry weather, it is necessary to pay attention to timely watering and replenishment.

If it is not watered and replenished in time, it will have a great impact on the growth of tomatoes. Because the area of the leaves is large at this time, the environment of high temperature and strong light will cause the leaves to transpire excessively and the water to evaporate quickly, resulting in curling of the lower leaves of the plant.

The curl of the leaves indicates that it is indeed phosphate. Plants should be given phosphate fertilizer in a timely manner, and proper watering should be used to minimize direct sunlight exposure, so as to ensure the quality and taste of plant fruits.

The tomato leaves are rolled upwards, pests appear in the soil, and the roots do not grow well. This leads to a lack of moisture. The solution is to prevent nuisance and promote root growth. With some medications. For example, R. solanacacium.

Tomato leaves roll down the reason.

1. Watering after a long drought.

If the soil is too dry in the early stage and the water is too large in the later stage, the transpiration of crop leaves will be seriously inhibited, and the leaves will roll back and wilt downwards when the leaves show a state of self-protection.

2. The impact of low temperature frost damage.

If the temperature continues to be below 10, the mesophyll cells of the crop will be damaged by the cold, and the leaves will begin to wilt, and in severe cases, the leaves will dry up and bend downward, and the mesophyll cells will freeze and whiten. When the spring cold is inverted, it will also cause the new shoot leaves to curl downward!

3. Pest damage.

The body of the tea yellow mite is very small and often difficult to identify with the naked eye. The main symptoms of mite damage are narrowing, stiff and erect leaves, downward shrunken or twisted deformities, and finally bald tips.

The leaves will become smaller, harder and thicker, and the most important thing is that the back of the leaves is oily and has a brown rust color. Aphid damage can also cause severe curling of leaves, because aphid habits generally feed on the back of leaves and young tissues, so aphid infestation can also cause different degrees of leaf rolling.

4. Nematode hazards.

Nematode infestation will cause the roots to absorb nutrients and conduct them in, and the roots will have severe lesions, causing the leaves to turn downward.

This kind of leaf curling is often caused by comprehensive factors, soil compaction, salinization, excessive water and other factors lead to poor root development, too much fruit set, too high temperature, poor ventilation, uncoordinated fertility, etc., the use of pesticides, these reasons currently exist more or less in the field, it is recommended to spray foliar Bihu or brassinin or Youma repair agent to alleviate, the most important time is to increase the appropriate application of organic fertilizer and biological bacteria on the basis of reasonable fertilization, which can be relieved by flushing humic acid biological bacteria.

Summary. On the one hand, it is caused by physiological leaf curling caused by improper cultivation and management measures and unsuitable environmental conditions, and on the other hand, it is caused by viral diseases and tea yellow mites.

What causes tomato leaves to curl upwards? How to deal with it?

On the one hand, it is caused by the physiological leaf curling of the slag due to improper cultivation and management measures such as Ming Pei, unsuitable environmental conditions, etc., and on the other hand, it is caused by viral diseases and tea yellow mites.

Leaf shrinkage caused by improper measures and unsuitable environmental conditions should start from cultivation management, and the right medicine should be prescribed for the problem; The leaf shrinkage caused by viral diseases and tea yellow mites is an infectious disease, which should be treated in time to prevent the spread of drugs.

Drought causes tomatoes to roll their leaves. The soil is dry, the roots do not absorb enough water, and the leaves lose water, thus wilting and curling.

Is it okay to hydrate now?

Seriously not leaf curls.

Yes pro.

What causes tomato leaves to curl upwards? How to deal with it?

Hello dear <>

I'm glad to answer your questions. There are many reasons to help you find the curl of the top leaves of your tomatoes. 1. High temperature exposure:

It may be caused by the high temperature and strong sunlight around the area, so it is necessary to strengthen ventilation and use sunshade nets to shade the light. 2. Traces of water shortage and drought: It may also be caused by insufficient watering and drought, and water management can be strengthened.

3. Infectious diseases: It may also be caused by infection with stripe spot, mosaic disease, leaf cover disease and other diseases, which need to be sprayed in time. 4. Other reasons:

There are also reasons such as excessive soil humidity and pesticide damage.