What to do if pepper leaves are yellow and curly? What causes chili pepper leaves to curl and what t

There are four reasons for this.

1. The yellow leaves caused by high temperature and drought are affected by high temperature and drought, and the pepper seedlings will have the problem of lower yellow leaves due to insufficient absorption of water and fertilizer in the root system and malnutrition, which can be delayed by spraying foliar fertilizer or timely watering. In addition, the high temperature in summer will also cause the adult pepper to turn yellow leaves, which is also easier to judge: the pepper leaves curl upward, and the veins of the leaves turn green and yellow spots appear, gradually leading to the yellowing of the whole leaf.

Second, the nutrient deficiency caused by the nitrogen deficiency of yellow-leaved pepper will appear thin and low, the leaves are thin and yellow, and will fall off in the later stage, you can apply an appropriate amount of nitrogen fertilizer or compound fertilizer, but not too much fertilizer, so as not to cause the plant to grow. Magnesium deficiency in pepper often occurs at the fruiting stage, and the leaves will yellowish along the main vein and gradually expand to the whole leaf, but the main vein and lateral veins will maintain clear green, and the old magnesium deficiency leaves will turn pale yellow between the veins. When peppers are deficient in potassium, the leaves will lose green and turn yellow from the leaf margin, and the tips near the middle of the plant will gradually turn yellow-green.

Lack of calcium in peppers causes the plant to be dwarfed and the top leaves to yellow, but the lower leaves remain green, and the growing point and its vicinity will stop growing or die, and the lower part of the fruit tree will turn brown and rot. 3. Yellow leaves caused by fertilizer damage and pesticide damage Yellow leaves: After the occurrence of pesticide damage in pepper, the leaves will be scorched and the leaf margins will yellow, but the yellow leaves caused by pesticide damage are mostly spotted and will not expand on the leaves.

Fertilizer damage to yellow leaves: After the fertilizer damage of pepper, the leaves will turn yellow, shrunk, brittle and ossified. Fourth, the disease caused by the yellow leaf pepper wilt wilt mostly occurs in the middle and late stages, the leaves near the ground in the early stage of the disease will droop first, and then the leaf tips will gradually become dry yellow, and spread upward along the main stem, and finally make the whole pepper all wilt and die, which should be used in time fungicide**.

Extended information: At the same time, in order to prevent the occurrence of yellow wilt, try to choose higher terrain and better drainage soil planting when planting to prevent and control the disease of stagnant water, and at the same time, irrigate the roots with biological bacteria twice after transplanting pepper seedlings, which can well prevent the occurrence of yellow wilt in pepper. Pepper is prone to viral diseases under the condition of high temperature and drought, and the veins of the leaves on the top of the plant will turn green after the onset of the disease, or there will be a phenomenon of dark green, and the leaves will be yellow and dry and fall in severe cases.

The control of yellow leaves of virus diseases should be combined with the control of whiteflies and aphids, because aphids cause the spread of virus diseases, and whiteflies will absorb the sap on the back of the leaves and make the leaves yellow. References**:References**:

1. Pests and diseases.

Pests and diseases are the main diseases in the growth process of peppers, and the medium of spreading the virus is the harm of stinging and sucking pests such as aphids. Insecticides with strong systemic properties such as imidacloprid and thiamethoxam can be selected for spraying, and amino-oligosaccharides should be added at the same time, so as to improve the immunity of pepper and enhance the resistance of pepper to viral diseases.

2. Lack of water in the soil.

In the summer season, the soil will inevitably lack water, and the roots of green peppers will always dry up, so that the roots can not absorb nutrients well. In the root part of the pepper, there will be a large area of water shortage, and finally the leaf curl will occur. Therefore, farmers can water the pepper a little bit, gradually increase the amount of watering, and slowly let the plant adapt to return to normal growth, it is recommended that you do it at night to reduce the evaporation of water.

3. Insufficient soil nutrients.

When the nutrients in the soil are insufficient, growers do not apply enough fertilizer, which can also cause the leaves to curl. You can apply a small amount of farmhouse fertilizer to supplement the nutrients of the pepper in time, so that you can have a good ** spicy leaves curl.

Pepper leaf curling is generally caused by pests and diseases, lack of soil moisture, and insufficient soil nutrients, and the corresponding methods should be found in time to alleviate the phenomenon of leaf curling.

When leaf rolling occurs, the light ones are generally only slightly rolled up or down on both sides of the leaves, and the heavy ones are often rolled into a cylindrical shape.

The main reasons for the occurrence of pepper leaf curling are:

1) Water-scarce soil is arid, and when the water supply is insufficient, it is most likely to cause leaf curl disease. (2) Under high temperature and strong light, the water loss of the plant is accelerated, and leaf rolling is easy to occur, and if the water supply is insufficient at the same time, the leaf rolling will be more serious. The strong light exposure in summer often causes the body temperature of the leaves to rise too fast and too high, accelerating the loss of water, and leaf rolling, so the open field pepper is more prone to leaf rolling in summer.

3) Foliar fertilizer damage, pesticide damage, foliar spraying pesticides, foliar fertilizer concentration is too high, or spraying pesticides and foliar fertilizers around noon during the high temperature period, which is easy to cause leaf curling. (4) When the fruit-leaf ratio is out of balance, when the plant leaves too many fruits and the leaf area is insufficient, the leaves are easy to be used for fruit growth in large quantities due to nutrients, and their own malnutrition and curl. In general, if the topping is too early or the leaves are not enough at the time of topping, leaf curling is more likely to occur.

5) Insufficient fertilizer and water, especially after treatment with fruit setting hormone, the growth potential of the fruit is enhanced, and the amount of nutrients competing for from the leaves is also increased. (6) When the damage of diseases and insects such as red spiders, aphids and whiteflies is serious, it is easy to cause leaf curling.

Control measures: (1) The varieties that are resistant to leaf curling are generally selected, the varieties with small leaves and thick leaves are more resistant to leaf rolling, and the varieties with large leaves and thin leaves are not resistant to leaf rolling.

2) Cultivated in protected areas, temperature management should be strengthened during high temperature to prevent excessive temperature. Generally, the maximum temperature should not exceed 35.

3) Cultivation in the open field should be reasonably densely planted to seal the ridges before the arrival of midsummer and avoid strong light irradiating the ground.

4) Implement mulching cultivation. The plants under plastic film mulching cultivation have strong growth, high fertilizer and water utilization efficiency, and are not prone to leaf rolling.

5) The concentration and timing of foliar topdressing and spraying should be appropriate. It should be dispensed and fertilized according to the required concentration, and foliar fertilizer and spraying should not be carried out around noon in the high temperature period.

6) Strengthen fertilizer and water management to prevent defertilization and dehydration. During the squatting period, the length of squatting time should be determined according to the type of variety used, the growth of the plant and the weather conditions, so as to avoid excessive squatting and leaf rolling; In the fruiting period, fertilizer and water management should be strengthened, and the soil should be kept moist frequently. Foliar topdressing should also be carried out at the peak of fruiting to supplement the lack of root absorption.

7) Timely pest control.

What to do with chili curly leaves? It only takes one trick to solve this problem perfectly.

Leaf curl virus, qualitative of the growth point, almost stops growing. Go to the Internet to search for biopesticide 30% suspension agent and spray it a few times to be cured.

Causes of yellowing of pepper leaves and prevention methods.

1.Viral diseases.

In the case of high temperature and drought, especially some time ago, the occurrence of virus disease is particularly serious, the specific symptoms are the appearance of bright veins on the top of the leaves slightly green, or the appearance of thick and light green mottling, severe in addition to the green mottling, will also cause the diseased leaves to turn obvious yellow, the phenomenon of falling leaves, especially in the case of high temperature and drought.

Prevention and control measures. In the prevention and control of viral diseases, we must first control whiteflies and aphids, because whiteflies and aphids will spread viral diseases, causing difficulties in prevention and control. For viral diseases, virus A plus triasanol can be used for prevention and control.

2.Leaf mold.

It usually starts in the lower leaves and gradually develops to the upper leaves, especially during the swelling period of the fruit. At the beginning of the disease, it has light yellow irregular green spots, and the diseased part of the leaf is initially white mold, and soon turns gray-brown to black.

With the development of the disease, the leaves gradually become spotted from the bottom up, and when it is serious, it becomes yellow and dry, so that the plant grows weak, and the fruit becomes smaller and deformed, which affects the yield.

Prevention and control measures. After the onset of the disease, it can be sprayed with a mixture of Dakonine 700-800 times, mycloconazole 2000 times, and methyl tobuzine 800 times. It is also necessary to pay attention to the timely removal of diseased residues after harvest, and concentrate on deep burial or burning, and reasonable crop rotation, preferably rotation with non-Solanaceae plants, which can reduce the probability of leaf mold.

It should be a lack of fertilizer or water, it depends on what the potting soil lacks nitrogen, the leaves are small, the leaf color is light yellow, the lower leaves are yellow first, and gradually the whole plant loses its green, and the lower part is more yellow.

The potting soil is deficient in phosphorus, the leaves are curled, the leaf color is dark green, the yellowing between the leaf veins of the lower leaves is potassium deficiency, and the brown edges of the lower leaves are easy to lodging.

The potting soil is deficient in magnesium, and the edge and middle of the leaves are green and white from bottom to top.

If there is no lack of fertilizer, it may be that there is too much watering or too much fertilizer.

Mosaic disease plus yellowing virus disease can be cured three times with a plant-derived biological pesticide 30% suspension agent willow. The effect is immediate.

The roots are weak and the absorption capacity is poor, and they cannot absorb enough nutrients for the growth of aboveground stems and leaves, resulting in poor plant growth. Nitrogen, phosphorus and potassium (20, 20, 20) water-soluble fertilizer plus humic acid active liquid fertilizer or amino acid active liquid fertilizer plus biological bacterial fertilizer were applied to the roots. Foliar sprays of natural brassinin plus humic acid active liquid fertilizer plus potassium dihydrogen phosphate plus zinc sulfate plus magnesium sulfate plus ferrous sulfate.

Every 7 to 10 days, 2 to 3 times in a row. In order to promote the roots to take root and strengthen the roots, promote the seedlings to grow seedlings and strengthen the seedlings.

Answer pro, there are many reasons for the yellowing of pepper leaves, the following is the prevention and control method I have sorted out for you about the causes of yellowing of pepper leaves, you can take a look at what is the main cause of yourself! 1.The yellow leaves caused by overwatering improved and the peppers entered the normal growth stage.

In order to promote the tree, some vegetable farmers water too much at one time, resulting in a lack of oxygen in the soil, the death or injury of capillary roots, which makes the water and nutrients insufficient, resulting in the young leaves at the top of the pepper are light yellow and wilted, and the old leaves are dark yellow. In addition, excessive watering leads to insufficient iron and zinc**, or lack of iron and zinc in the soil, which can also lead to yellowing of the parietal leaves. Prevention and control methods:

Watering should be carried out according to the needs of peppers in different growth periods and soil moisture, and the requirement is to water small water, not large flooding. After the yellow leaves appear due to excessive watering, hoe in time to reduce soil moisture, and spray leaf fertilizer containing iron and zinc in time to solve the problem. 2.

The yellow leaves caused by the excessive soil are affected by the continuous rainy and snowy weather, and the peppers planted early cannot be watered in time due to the low temperature in the early stage, resulting in the lower old leaves gradually drying up and curling yellow. Solution: After the weather improves, water in time to ensure the moisture required for the growth of peppers, but the watering should not be too large, otherwise the capillary root injury will cause the new leaves to turn yellow.

3) Yellow leaves caused by excessive fertilization are normal old leaves are hypertrophied and shiny, the leaf color is dark green, the back of the leaves is shrunken and convex after a large amount of fertilization, the leaves are not stretched, the old leaves gradually fall off, the new leaves are seriously curled and closed, and the whole leaves turn yellow and fall off. The reason for this is that the amount of fertilizer applied is too large. Workaround:

Timely watering to dilute the fertilizer concentration, combined with irrigation rooting agent, and spraying Brassidiolactone or Bihu at the same time, can alleviate fertilizer damage.

Parietal yellowing is mostly a viral disease, and the lower yellowing is considered to be a bacterial disease or nitrogen deficiency.

Pepper leaves are rolled, and there are usually several possibilities.

1.After a day of evaporation in summer, the plant lacks water and closes its leaves to prevent the water from evaporating.

2.Caused by insect infestations, such as red spiders.

3.Excessive fertilization of the fertilizer leads to curling and burning leaves.

Peppers belong to the infinite growth type, which buds, blooms, and bears fruit at the same time. Pepper has a long growth period, likes temperature and light, but the root system is not developed, the root amount is small, the soil is shallow, it is not drought tolerant, not waterlogging, and it needs more fertilizer and has strong fertilizer tolerance. Pepper is heavy on nitrogen and potassium fertilizers, while the demand for phosphate fertilizers is not large, and a large amount of calcium, magnesium and boron are required.

During the growth period of pepper, it is best to combine pest spraying control, after fruit set, appropriate spraying of ribery Yanwo amino acid foliar fertilizer and Yanwo powder potassium dihydrogen phosphate solution, combined with imported chelated boron fertilizer from Shangyanwo, can effectively prevent flower and fruit fall. At the peak of fresh pepper harvesting, peppers need to absorb a large amount of magnesium fertilizer, magnesium nitrate solution, and spray several times. When pepper is deficient in boron, you can use Yanwo boron fertilizer, which has a high safety factor and is not easy to cause poisoning.

Summary. I have helped you find the results; Yellow and shriveled leaves on the top of peppers? Hello, chili peppers lack iron.

When peppers are deficient in iron, the newly grown leaves will yellow, and over time, the leaves on top of the pepper will yellow, and the leaves will twist. Pepper is deficient in magnesium. When the pepper is deficient in magnesium, the interveined mesophyll of the leaves will yellow, and the disease often starts from the lower leaves of the plant, and with the passage of time, the symptoms of green yellowing deficiency will gradually develop to the young leaves, and finally all the leaves of the magnesium deficiency plant will become symptomatic.

Peppers are boron deficient. When the pepper plant is deficient in boron, the new leaves of the pepper are light and yellow, the growth point is dead, the flower is stunted or shed, and the base of the fruit is corked. Chili peppers are deficient in zinc.

When the pepper plant is deficient in zinc, the top leaves will be small and yellow, and the plant will be relatively short. Hope mine is helpful to you.

I have helped you find the results; Yellow and shriveled leaves on the top of peppers? Hello, chili peppers lack iron. When peppers are deficient in iron, the newly grown leaves will yellow, and over time, the leaves on top of the pepper will yellow, and the leaves will twist.

Pepper is deficient in magnesium. When pepper is deficient in magnesium, the interveined mesophyll of the leaf chain and slice will yellow, and the disease often starts from the lower leaves of the plant, and with the passage of time, the symptoms of lack of green yellowing will gradually develop to the young leaves, and finally all the leaves of the magnesium plant will be symptomatic. Peppers are boron deficient.

When the pepper plant is deficient in boron, the new leaves of the pepper are light and yellow, the growth point is dead, the flower is stunted or shed, and the base of the fruit is corked. Chili peppers are deficient in zinc. When the pepper plant is deficient in zinc, the top leaves will be small and yellow, and the plant will be relatively short.

Hope mine is helpful to you.

Hello, there is still a possibility. 1.Affected by high temperature and drought, pepper seedlings will have the problem of lower yellow leaves due to insufficient absorption of root water and fertilizer and malnutrition, which can be delayed by spraying foliar fertilizer or timely watering.

In addition, the high temperature in summer will also cause the adult pepper to yellow leaves, which is also easier to judge: the pepper leaves curl upward, and the leaf veins will turn green and yellow spots appear, gradually leading to the yellowing of the whole leaf. 2 Pepper nitrogen deficiency will cause the plant to be thin and low, the leaves are thin and yellow, and it will fall off in the later stage, you can apply an appropriate amount of nitrogen fertilizer or compound the stupid Hefei, but do not apply too much fertilizer, so as not to cause the plant to grow.

Is it the onset of the disease.

I have helped you find the results; Is it the onset of the disease. Hello, it may be pests and diseases, pests and diseases will have signs of balance. The yellowing and wilting of the leaves on the top of the pepper can be caused by a variety of reasons, including lack of water, nutrient deficiencies, pests and diseases, etc.

If it is caused by a pathological segment infestation, it may be caused by a bacterial infection or insect infestation. It is advisable to inspect the plants for signs of insects or germs, and if so, to take appropriate measures to control them. At the same time, it is important to ensure that the plants are provided with adequate hydration and proper nutrients to maintain healthy growth.

What I lost was a large number of elements, organic water-soluble fertilizer should not be able to determine all kinds of elements.

Hello, you should pay attention to the dosing of fertilization, too much dosing of organic water-soluble fertilizer will also cause the leaves to yellow and wilt. Hope mine is helpful to you.