Tomatoes What s wrong with the edge of the leaves being a little dry?

Hello, there are several reasons for this.

1. Excess water.

To maintain tomatoes, we must wait for the potting soil to dry and water thoroughly to avoid excessive watering, as excessive moisture in the soil will easily cause root rot and easily induce leaf spot.

When watering too much, it is easy to induce rhizome rot, and water accumulation in the roots will cause the root system of the tomato to to have no oxygen, which will lead to a lack of oxygen in the tissues of the plant, and finally lead to plant decay, and finally cause the whole plant to wither.

Tomato rhizome rot is generally caused by overwatering, and the other is root rot, which is infected with fungal diseases, which are usually dormant and can easily induce fungal diseases if the soil is moist for a long time.

2. Fungal diseases.

Fungal diseases are a common problem in tomatoes, especially when seedlings are cultivated, if you find that there is a rot of rhizomes, you must pull it out to avoid infecting other seedlings.

Sometimes the soil will also contain fungi, and a lot of water or an unventilated environment can easily lead to leaf spot disease, and the leaves will also turn yellow.

3. Early blight.

This is also a very common fungal disease, first of all, it appears on the low old leaves, and the leaves look like spots, forming small spots like concentric rings, which will eventually lead to yellowing and wilting of the leaves.

4.Potassium deficiency.

The symptoms of crop potassium deficiency first show old leaves, from the tip of the leaf and the leaf edge began to yellow, commonly known as "**edge", there are necrotic spots in severe cases, sometimes the leaf edge is scorched, it is recommended to use potassium dihydrogen phosphate + foliar fertilizer containing amino acids, which can make the leaves green, the stalks thick, and promote growth.

Hello, it may be a lack of water, watering may be better.

Hello, this may be due to a boron deficiency and zinc deficiency.

Boron deficiency can easily cause the leaves to become brittle, which can be solved by foliar spraying with boron fertilizer of Vosch Ferva leaves, and spraying 2-4 times in a growing season.

In addition, fungicides or other pesticides will cause tomato leaves to become brittle when the concentration is high, and the concentration of pesticides should be reasonable.

Zinc deficiency occurs in small leaves, and can be supplemented with zinc fertilizer for swan leaves. Easy to absorb and effective.

Management of tomatoes.

Second, the management method of planting tomatoes.

1. Prune regularly.

TomatoesThe growth cycle of tomatoes is about 60 days, and pruning begins after the tomatoes have grown stems and leaves. The side buds that grow at the base of the stem should be cut off to prevent the invasion of pests and diseases. Generally, when the tomato has just grown its first flower, in order for it to absorb the nutrients, the other side branches should be cut off as soon as possible.

After waiting for the tomatoes to bear fruit, you should pinch off the main head above the fruit to control the growth of the plant.

2. Regular inspection.

If the tomatoes appear to have yellow leaves, it is necessary to find out**, prescribe the right medicine, and spray the right fertilizer. If the leaves of the tomatoes are hardened and slightly upward, this is a symptom of malnutrition and fertilizer needs to be applied immediately. If the leaves are slightly bent downward, the tomatoes are healthy and can be left without fertilizer.

3. Sufficient moisture.

Tomatoes have well-developed stems and leaves, have a large demand for water, and have a strong absorption capacity, so it is necessary to replenish sufficient water. However, tomatoes are drought-tolerant crops, so they should not be watered too much, and try not to use irrigation when watering, and use a general watering can. Spring and autumn are generally watered once in about 7 10 days, and the watering time is generally selected before 10 o'clock in the morning, and it is not suitable for watering at noon, and in winter, it is generally watered once in about 10 days.

Summary. The leaves of tomatoes are black and wilted, mainly due to diseases. In the summer, between May and June, tomatoes are exposed to high temperature and humidity, and tomato black spot disease, and the leaves will turn black, dry and wilt.

Between 3-7 in spring and 9-11 in autumn, in a humid environment, tomatoes develop tomato leaf mildew, and the leaves turn black, curl and wilt.

The leaves of tomatoes are black and wilted, mainly due to diseases. In the summer between May and June, tomatoes will get tomato black spot disease in a high temperature and humidity environment, and the leaves will turn black, dry and wilted. Between 3-7 in spring and 9-11 in autumn, in a humid environment, tomatoes develop tomato leaf mildew, and the leaves turn black, curl and wilt.

After the tomatoes have tomato black spot disease, the diseased branches, leaves and fruits of the tomatoes need to be cut off and burned in a concentrated manner. After pruning the diseased leaves, the tomatoes can be sprayed with iprodione, chlorothalonil or mancozeb. After diluting the agent with water, it is generally 7 to 8 days to spray tomatoes 1 time, and after spraying 3 or 4 times in a row, tomato black spot disease can be inhibited.

Tomato plants sometimes appear on the upper part of only a leaf wilting strange phenomenon, may be high temperature at noon, transpiration too fast, water ** is not timely caused, but there should be no obvious impact on growth, if to ensure that the soil is not short of water, you can continue to observe, if there are other problems, but also timely consultation for prevention.

If the watering is insufficient, the water in the leaf cell vacuole is reduced and no longer full, so it is necessary to loosen the soil first and then water thoroughly; If the temperature is too high, the cell wall of the leaf cells will become soft, and ventilation and cooling will be required; If the light is not received enough, the intensity of leaf tissue is reduced, and it is necessary to use a fill light to make up the light. Disease damage, need to remove rotten and dry branches and leaves, spray 400 times 80% mancozeb, four times a month.

The upper blade is hairy, depending on whether it has been stained with some corrosive liquid. If not, it's a phenomenon in general.

The picture is in **, is it divided into time periods or is it like this all day? I haven't used any fertilizer or pesticides, and there is no abnormal weather in the recent period.

Summary. Hello, the dry leaves at the top of tomatoes are related to soil, moisture, pests and diseases and fertilizers, during the maintenance period, if the soil fertility is too low, poor air permeability, the leaves of tomatoes will dry up and yellow. If there is not enough water or fertilizer, the tomatoes will not grow well and the leaves will turn yellow and dry.

If they are infested by pests and diseases, the leaves of tomatoes will curl, dry up or fall off. Do you have any questions that I would like to answer for you?

What's the deal with the dried leaves at the top of tomatoes?

Hello, I have seen your question, and I am sorting out the answer, please wait for a while Hello, I have seen your question Ha Beibi Now I am manually replying to the content guess for you, but it will take a little time, please wait patiently, thank you, thank you Ha Fang Zhaoqin I am here to wish you a prosperous Year of the Tiger

Hello, the dry leaves at the top of tomatoes are related to soil, water leakage, pests and diseases and fertilizers, during the maintenance period, if the soil fertility is too low, poor air permeability, the leaves of tomatoes will dry up and yellow. If there is not enough water or fertilizer, the tomatoes will not grow well before they are grown, and the leaves will turn yellow and dry out. If they are infested by pests and diseases, the leaves of tomatoes will curl, dry up or fall off.

Do you have any questions that I would like to answer for you?

When growing tomatoes, there are often many problems that affect the growth of tomatoes. Among them, tomato leaf curling is one of them. So what causes tomato leaves to curl?

1. Pruning too early.

When planting tomatoes, we need to pluck and prune. However, it is necessary to pay attention to the topping time, if the topping is too early, it is easy to lead to the growth of axillary buds, resulting in the inability of the phosphoric acid in the leaves to be transported, and the leaves will also age, resulting in the phenomenon of leaf shrinkage. In addition, when pruning, it is not advisable to remove the side branches too early.

It should be carried out until the side branches grow to about 7cm, if the pruning time is too early, it will cause the assimilation area of the leaves to be too small, which will affect the growth of the above-ground part of the plant, and will also have a great impact on the growth of the roots, resulting in leaf rolling.

2. High temperature and drought.

At the peak of tomato fruiting, temperature and moisture are very important. If you encounter hot and dry weather, then you should pay attention to watering in time and do a good job of hydration. If you don't water and replenish it in time, it will have a great impact on the growth of tomatoes.

Because at this time, the area of the leaves is very large, and the environment of high temperature and strong light will cause the leaf transpiration to be too strong, and the water will evaporate too quickly, so that the lower leaves of the plant will shrink.

3. Improper fertilization.

In the process of tomato growth, the demand for nutrients is still relatively large. Therefore, we should pay attention to fertilization, control the application of nitrogen fertilizer, and remember not to apply too much nitrogen fertilizer. If too much nitrogen fertilizer is applied, it is easy to cause fertilizer damage to tomatoes, resulting in leaflet flipping and shrinking.

In addition, excessive application of nitrogen fertilizer will lead to the lack of phosphorus, potassium and various trace elements in tomatoes, which will lead to too small leaves and deformities.

In the process of tomato cultivation and management, water-soluble fertilizers of fertile leaf amino acid series can be appropriately applied to ensure healthy growth.

4. Disease and drug damage.

Diseases are also a major cause of curling of tomato leaves. Among them, especially viral diseases, tomato leaves tend to fade green, become smaller and shrivel after the appearance of viral diseases. Generally, it is mainly on the heart leaves and the upper leaves of the plant, especially in high temperature and strong light.

Then there is the pesticide damage, many people use the agent to dip the flower during the tomato flowering period, if the concentration is too large or the leaves are in direct contact with the agent, then it will lead to leaf rolling.

It's a drug! Spray the nutrient solution now!