How to prevent the phenomenon of yellow leaves in celery?

Celery planting with its young leaves and young stems for food, commodity characteristics to the leaf color is dark green, petiole tender green manure is wide and thick is better, eat coarse fiber less, the taste is crisp and tender, but in the planting and production, often due to extensive management, improper fertilization and watering, such as nitrogen fertilizer application too large, too little or insufficient fertilization, resulting in seedlings or weak growth, soil dryness and watering is not timely, lack of water in the root system can not supply the plant dehydration, as well as diseases and underground pests harm the roots, etc., will cause celery to appear yellow leaves. The appearance of yellow leaves will lead to the inhibition of celery photosynthesis, the reduction of organic matter synthesis, the slow growth of plants, the increase of fibrous quality, and the decrease of yield and quality.

Prevention and control methods for yellow leaves in planted celery: Reasonable fertilization, avoid too much or single fertilization, insufficient fertilization:

Celery likes fertilizer, the plant is short, and the growth is rapid, so the soil moisture and fertilizer should be continuously carried out, celery will grow fast and the yield is high, the demand for nitrogen in celery growth is large, and the fertilization is mainly nitrogen fertilizer, so that celery grows fast, and the leaves are not yellow, but too much nitrogen fertilizer application will cause root burning, insufficient application amount, and will grow slowly and appear nitrogen deficiency, both will make the plant appear yellow leaf phenomenon, and at the same time in order to improve the celery leaf color concentration and petiole hardness, reduce the increase of fibrous matter, and apply nitrogen fertilizer at the same timeIt can be combined with phosphorus and potassium fertilizer to achieve a balanced nutrition of nitrogen, phosphorus and potassium, promote the normal growth of celery, and prevent or alleviate the phenomenon of yellow leaves of celery.

Especially for the celery harvested, from the harvest to the end of the harvest, it takes up to half a year, and fertilizer should be applied every time after the harvest every month to supplement the supply of nutrients, promote the rapid growth of small petioles, and prevent the phenomenon of yellow leaves due to nutrient deficiency.

Watering at the right time and in the right amount to prevent the soil from drying out

Celery likes a cold growth environment, frequent watering to reduce soil temperature, keep the soil moist, can promote celery to grow better, at the same time, the plant absorbs enough water, the petiole is brittle and tender, less fibrous, the leaf color is green and large and thick, and the quality is high. If the soil is dry, the plant due to lack of water, poor root growth, leaves will become yellow due to dehydration, petioles are thin and short, leaves are small and thin, and crude fiber increases, which seriously affects the yield and quality, therefore, frequent watering is an important measure to improve yield and quality, but if watering too often and too much watering, it will bring serious soil compaction, poor air permeability, poor root growth and other negative effects.

Watering should be timely and appropriate, when the soil is dry, water in time to provide water to promote the growth of plants, when the air temperature is too high, small water is watered in an appropriate amount to reduce the temperature of the small climate, create a suitable environment for the normal growth of plants, usually watering to see dry and wet, keep the soil moist, and promote the rapid growth of celery.

Pest and disease aspect:

Pests and diseases harm the roots and leaves of celery, and will also cause yellow leaves, but compared with the lack of fertilizer and water will appear in a large area of yellow leaves, the yellow leaves of diseases and insects are less, but they can not be ignored, so it is necessary to observe often in field management, and find signs of pests and diseases, so as to prevent diseases and insects to ensure the health of the plants, so as to prevent the damage of pests and diseases, resulting in weak plant growth, small yellow leaves and other phenomena.

When the fertilizer damage occurs celery yellow leaves, the fertilization should be scientific and reasonable, and the fertilizer damage should be taken in time to take rescue measures. Soil that is too dry and too wet for a long time will cause yellow leaves, so celery must be well watered to keep the soil dry and wet.

Acidifying alkaline soils to a neutral and acidic level can be done with a certain amount of organic fertilizer and an increase in organic matter, so that celery grows better.

It is likely to be caused by the lack of nutrients in plants, and nitrogen and potassium fertilizers should be supplemented in time to promote the growth of plant rhizomes, regular watering, and appropriate ventilation.

The yellow of drought and lack of water is different from the yellow of water, the yellow of water deficiency is that the tip or edge of the leaf is withered and dry, and the old leaves are withered and yellow from the bottom up, but the growth of new leaves is relatively normal. Pay attention to watering when watering to water enough, just water thoroughly. 2. When there is a lack of fertilizer, the color of the young leaves becomes lighter, yellow or light green, while the old leaves are more normal or gradually turn from green to yellow.

The potting soil should be checked frequently, if there is dryness, the soil should be changed in time, the thin fertilizer should be applied frequently, and some alum water should be poured in time to replenish iron. Do not apply excessive ammonium nitrogen and ammonium nitrate fertilizers, and apply small amounts and multiple times.

Under the condition of ensuring the temperature of wheat seedlings, try to open the window for ventilation to reduce ammonia in the shed. Overcome fertilizer damage, timely sprinkling, fertilizer effect is better. Deficiency, celery needs a lot of nitrogen, phosphorus, potassium and a lot of calcium during the growth process.

Celery mainly harvests stems and leaves, needs more nitrogen in the growth process, common nitrogen deficiency, celery leaves are nitrogen deficiency, the leaves first old leaves begin to emerge from the outside, with the aggravation of nitrogen deficiency, the leaves will appear yellow, the outside of the old leaves yellow, gradually appear the whole plant, the leaves fall off, this is the obvious nitrogen deficiency symptoms.

Potassium deficiency, celery potassium deficiency, not as obvious as nitrogen deficiency fertilizer, yellowing of leaf margins, slow growth, poor growth, weak root system, the whole plant appears thin, generally potassium deficiency of celery, the outer old leaves are yellow, and accompanied by interveined necrotic spots. Timely control of pests and diseases, celery pests and diseases are mainly prevented, and 800 times liquid methyl tobuzin + brassinolide can be sprayed in peacetime. Prevent the occurrence of celery leaf spot and yellow leaf disease.

The organic fertilizer used in the base fertilizer should be fully decomposed before use. Avoid using too much ammonia as a base fertilizer. Reasonable irrigation, do not let the soil dry and wet, resulting in the occurrence of pests and diseases.

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After this happens, we must do a good job of soil drainage, we must understand what kind of nutrients celery lacks, and then we must supplement this element, we must supplement nitrogen fertilizer, or phosphate fertilizer, we must prune branches and leaves in time, and we should also pay attention to the planting density, do not plant densely, and plant in a cold, dark and humid environment, and the temperature is controlled between 15 degrees and 25 degrees.

I should apply more nitrogen fertilizer, mainly nitrogen fertilizer, supplemented by phosphorus and potassium fertilizer, so that it can grow normally, promote the normal growth of celery, and prevent the phenomenon of yellow leaves.

At this time, you should hand over more water, avoid the temperature is too high, and do not let the sun shine directly on the leaves of celery, you can spray some pesticides to increase the humidity of the air.

Celery plants are edible with their tender leaves and stems, with thick leaf color, light green and thick petioles, less edible crude fiber, crisp taste and strong taste, but in the process of growth and production, often due to extensive management, improper watering and fertilization such as too much nitrogen, too little or no fertilizer, moderate growth or lead to weak growth of seedlings, soil moisture is not timely, root water shortage makes the plant dehydrated, and causes diseases and underground pests to harm the root system, which will cause the yellowing of celery leaves. The appearance of yellow leaves will lead to inhibition of celery photosynthesis, decreased organic synthesis, slow and weakened plant growth, increased fiber, and decreased yield and quality.

Celery likes to be fertilized, the plants are short and grow fast, so the soil moisture and fertilizer will be continuously supplied, celery grows and yields quickly, and celery grows with a large demand for nitrogen. Nitrogen requirements are generally 20% to 30%. Celery needs to be supplemented with enough nitrogen in the later stage of growth so as not to affect leaf and fruit development.

The growth of celery is too high will affect its yield and quality, celery is a fertilizer-loving plant, so it should be noted in the fertilization process, too much fertilizer is too large, it is easy to deform the fruit, affecting its taste and taste.

When celery grows to 8 9 leaves, in order to ensure that each leaf can bear fruit, it is necessary to apply compound fertilizer appropriately, compound fertilizer is generally in kilograms of compound fertilizer and urea per mu, urea and compound fertilizer are organic fertilizers, pay attention not to sprinkle fertilizer on the leaves when fertilizing, so as not to affect the yield of celery. During the whole growth process of celery, sufficient water and fertilizer will be given every time you water, if you apply water and fertilizer, you must use the appropriate amount, and it is best to combine fertilizer and water.

Top dressing is mainly nitrogen fertilizer, can be used urea, superphosphate or compound organic fertilizer to add an appropriate amount of potassium dihydrogen phosphate and rotten chicken manure mixed after application, the application time is every 10 days or so, to fully mix fertilizer and nitrogen fertilizer, the number of each top dressing can not be more, and the time of each top dressing can not be too long. Top dressing is carried out after the harvest of celery in autumn.

You can fertilize the celery to improve, or you can water the celery more, so that you can prevent the phenomenon of yellow leaves.

Prevention and control of yellowing of celery leaves.

Water in time, the soil should not be too dry, and it should be kept moist. Some people control the seedling stage too long, water control is too much, and ammonia poisoning is very likely to occur, but do not have too much water, and pay attention to removing stagnant water in time after rain. At the seedling stage, it can be combined with watering and spraying to help Zhuang to achieve the standard of strong seedlings.

Do not sprinkle chemical fertilizer in the greenhouse, apply deep cover soil, and water after application. The applied organic fertilizer should be fully decomposed before application. Do not overapply fertilizers such as ammonium nitrogen fertilizer and ammonium nitrate, and fertilize a small amount many times.

Under the condition of ensuring the temperature of the seedlings, try to open the window to ventilate it, reduce the ammonia in the shed, and if fertilizer damage occurs, water it in time, and the remedial effect is better.

Celery likes fertilizer, the plant is short, the growth is fast, so the soil moisture and fertilizer need to be continuously supplied, celery grows fast and the production is high, the celery growth has a large demand for nutrients, and the fertilization is dominated by basal fertilizer, so that celery grows fast, and the leaves do not turn yellow, but the use of too much basal fertilizer causes root burning, the amount of fertilizer is not enough, and the growth retardation occurs nutrient deficiency, both of which will make the plant yellow leaf condition, and at the same time, in order to improve the color concentration value of celery leaves and the strength of the leaf stem, reduce the chemical fiber quality improvementAt the same time as the main application of basal fertilizer, it can be combined with phosphorus and potassium fertilizer, <>

Achieving a combination of light fertilizer and nutrition to promote the normal growth of celery can avoid or alleviate the condition of celery yellow leaves. There are many reasons why celery leaves turn yellow. Long-term precipitation or excessive watering will cause yellow leaves due to excessive soil moisture, while long-term drought, insufficient watering or not immediately watering, will often cause yellow leaves due to drought and lack of water.

The planting land is too poor, often due to lack of fertilizer and yellow leaves, but too much fertilizer, or the wrong method of fertilization, unreasonable fertilizer type often leads to fertilizer damage, such as ammonia poisoning, and finally yellow leaves. When the planting ground is too cloudy, there is no light or not enough light, <>

Yellow leaves will also occur, but if the light is too strong, there will be yellow leaves, because it is easy to be sunburned. If greenhouse planting or greenhouse planting is used, effective natural ventilation is not carried out, and yellow leaves will be caused. Natural diseases damage celery, which is also a key cause of yellow leaves.

Zinc deficiency. If the chemical content of iron is not excessive, it will cause the leaves to turn more and more yellow. Generally, it is caused by the increase of calcium bicarbonate in the soil and the pH value is alkaline.

If there is not too much light, or the soil layer is relatively poor, then there will be yellow leaves, generally planted by vegetable greenhouses, and there is no effective natural ventilation, then there will also be the problem of yellow leaves. The relative density of growing celery should not be too large. Immediately remove diseased leaves and stems.

Eliminate the diseased seedlings, and find that the gray mold seedlings should be pulled out in time. On sunny days, water the flowers later in the morning, gradually water the flowers when the shed temperature rises to 33, and turn off the ventilation holes when the shed temperature drops to 20 to alleviate the decrease in the shed temperature at night. On rainy days, open the vents for ventilation.

Watering should be carried out at noon, and watering should be controlled as much as possible in the early stage of the disease.

Daily foliar fertilizer spraying. Most of the celery leaves are deficient in phosphorus, so we should pay attention to supplementing phosphorus fertilizer every day.

It is necessary to choose the right pesticide for use, be sure to pay attention to the use of fertilizer, pay attention to watering, and pay attention to fertilization.

Fertilization can be carried out, watering can be carried out, and it is also necessary to pay attention to the prevention and control of diseases, so that it can be better prevented.

Summary. Hello, celery is easy to get root rot during the growth process, the taproot is soft rot, the plant is dwarf, and the leaves are yellow. The disease usually occurs in low-lying, damp areas.

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What is celery leaf yellow? How to prevent it?

Hello, celery is easy to get root rot during the growth process, the taproot is soft rot, the plant is dwarf, and the leaves are yellow. The disease usually occurs in low-lying, damp areas. If my answer is helpful to you, please give a thumbs up (in the lower left corner), I look forward to your like, your efforts are very important to me, and your support is also the motivation for my progress.

Finally, I wish you good health and a happy mood!

Hello, the control method of celery yellow leaves 1Drought and stain protection Growing celery requires balanced watering. In general, the ground should be kept moist and not too dry.

At the same time, do not overwater. If my answer is helpful to you, please give a thumbs up (comment in the lower left corner), look forward to your Fengqiao spring praise, your gestures are very important to me, and your support is also the motivation for my progress. Finally, I wish you good health and a good mood!