Cucumber seedlings wilt during the day and get better at night, what s going on?

Cucumber seedlings wilt during the day and get better at night. According to this description, this is cucumber wilt. And the night is a little better, you can judge that this is in the early stage, if it is the late stage, then the cucumber seedlings will wilt both day and night.

Let me introduce you to cucumber wilt.

Cucumber wilt diseaseCucumber wilt symptoms: For example, when cucumber seedlings are raised, the seedlings will wilt during the day, as if they lack water, especially the stems are significantly reduced. But in the later stage, the whole seedling will wilt and will not recover at night, and over time, the cucumber seedling will wither and die.

Causes of cucumber wilt disease:

The scientific name of the pathogen of cucumber wilt disease is Fusarium acuminium cucumber specialization, which can overwinter in the residues and seeds in the soil through mycelium and spores, and can survive in the soil for several years. Because this pathogen likes a warm and humid environment, high soil moisture can easily cause cucumber wilt. If several crops of cucumbers are planted in the same plot in a row, the number of pathogenic bacteria will accumulate and increase the severity of cucumber wilt.

Now that we know the symptoms and causes of cucumber wilt, we need to understand how to prevent and control cucumber wilt.

Cucumber wilt control methods: First of all, we need to ** the spread of pathogenic bacteria. On the one hand, we need to select the most reliable and disease-resistant seeds, disinfect the seeds by soaking the seeds before sowing, and then sow them; On the other hand, after each harvest, the planting field must clean the soil of diseased residues and disinfect the soil. This cuts off the spread of pathogenic bacteria.

Cucumbers cannot be cropped continuously, and must be rotated with non-cucurbitaceae crops, and the soil must be disinfected for each rotation, and the soil must be ploughed.

In the process of cucumber growth, it is necessary to do a good job of field management. Scientific water and fertilizer management, increasing photosynthesis, and appropriately reducing the ambient temperature can enhance the growth trend of cucumber, which is conducive to reducing the incidence probability of cucumber wilt.

Usually spray pesticides for prevention, such as carbendazim, spray once a week, spray three or four times in a row, you can get a good control effect. Carbendazim is suitable for the planting period of cucumber seedlings, and other different kinds of pesticides have different action times. In the early stage of the disease, a variety of drugs can be used in turn to achieve good results.

If the disease is severe, then I recommend removing the diseased plants, disinfecting the planting area, and paying more attention to the growth of other plants.

Cucumber wilt is not terrible, and its symptoms are more obvious, and growers are relatively easy to detect. If there is a blight, it will be timely**. In addition to blight, other diseases such as downy mildew should also be aware of the symptoms and take precautions.

What happens when cucumber leaves suddenly wilt? The loss to growers is very large, and these 4 methods can be prevented.

It is most likely caused by high daytime temperatures. The temperature is too high during the day, and the water in the soil evaporates quickly, so you should replenish water in time to keep the soil moist or give cucumber seedlings shade from the sun.

The main reason is that the pathogen blocks the conduit of the melon seedlings to transport water, and the pathogen contains toxins that affect the normal squeezing of the melon seedlings, so that the leaves of the diseased seedlings turn yellow and die, and the melon seedlings infected with the blight disease are easy to pull out, this is because they feel that the roots, the roots become brown and rot.

I don't know very well, you can go to the Internet to check some information, and the explanations in it will be very detailed and reliable. And the method is also very simple.

It may be that the fertilizer cannot keep up, or it may be because of the weather, as the temperature gets higher and higher, the management of cucumbers will also change, and it may also be that there are pests and diseases. Cucumber has a shallow root system, so it should be cultivated in humus loam soil rich in organic matter and good air permeability. The soil should be mildly acidic to weakly alkaline.

Rooting agents and feasting biofungi can be applied.

Seedling fertilization: use imported water-soluble fertilizer, fully and evenly. If it is found that there is a lack of fertilizer at the seedling stage, you can use powder potassium dihydrogen phosphate foliar fertilizer and spray it on the foliage.

It is conducive to cultivating strong seedlings. Bottom fertilizer: Generally, the roots enjoy rooting agent and Yanwo biological fungus agent, which is conducive to slowing down the seedlings.

Soil top dressing: 5000 kg of cucumber per mu, from planting to the end of harvesting, a total of 8 10 times of top dressing. The first top dressing after planting slow seedlings was mainly water-soluble fertilizer.

In the peak period of vegetable melon, increase the number of top dressing. It is conducive to promoting the normal development of fruits and the healthy growth of plants.

Under natural growing conditions, it is not possible to ensure smooth ripening of all female flowers and young fruits of cucumbers, from flowering to fruit set.

In particular, greenhouse growers know that during the expansion period of the fruit, the young melon will stagnate, gradually turn yellow, dry up, and finally wilt and fall off.

Recently, several farmers have reported that the cucumbers planted in the greenhouses suddenly wilt in a short period of time, and the plants slowly lose their ability to set melons, which is the phenomenon of acute wilting of the cucumbers.

Cucumbers wilted. (1) Cause

In summer, the temperature is high at noon and afternoon, and the transpiration of melon leaves is vigorous, and the root system cannot keep up with the transpiration of the leaves. If the temperature is very high after a sudden rainstorm at this time, the transpiration of melon leaves is blocked, and the temperature and soil temperature remain high, causing the whole leaf of the cucumber to suddenly wilt.

Normal plants. (2) Countermeasures

Cucumbers planted in greenhouses should be ventilated to keep the temperature below 30 degrees during the day and about 18 degrees at night, and the relative humidity is lower than 85%. Sometimes even if the vents of the shed are all opened, the temperature is still high, at this time the bottom edge of the shed film on the south side should be uncovered, so that the temperature of the shed is lowered, and at the same time pay attention to watering, it is best to carry out at 8 10 o'clock in the morning, do not water at night or on a cloudy day, and pay attention to the difference between water temperature and ground temperature should be within 5 degrees.

Cucumber growth and development is suitable for relative humidity of about 85%. When the relative humidity of the shed is higher than 85%, it should be ventilated and humidified. When the temperature is 10 to 15 degrees in the evening, ventilate for 1 2 hours to reduce the humidity at night, prevent growth, and avoid high temperature obstacles.

In the production, the first batch of melons is easy to grow when there are few, forming a situation of excessive growth and development. For this purpose, 100 times of Baoguoling liquid can be used to spray flowers or spot flowers, which can not only promote early maturity and increase yield, but also prevent growth. In case of continuous high temperature or early dry weather, the cucumber evaporation in the shed is large, and the respiration is vigorous, at this time, a lot of water is consumed, and if the duration is long, it will occur high, etc., at this time, it is necessary to increase the number of watering appropriately.

What happens when cucumber leaves suddenly wilt? The loss to growers is very large, and these 4 methods can be prevented.

Due to the influence of water, fertilizer, temperature and light, the growth of cucumbers in solar greenhouses often shows various symptoms that affect the yield due to the different growth conditions between the sheds.

1. Flower topping syndrome.

The flower topping is the melon topping, the growth point of the melon vine is shrinking, the leaf color is black and green, the young melon is raised, higher than the growth point, and the reproductive growth and vegetative growth are hindered at the same time. This type of vine is caused by excessive fertilization (especially nitrogen) or excessive pesticide spraying at one time. There are three measures that should be taken in management:

The first is to re-water and apply a small amount of decaying human feces and urine with the water; the second is to spray low concentrations of gibberellin at the point of growth; The third is top dressing, a small amount and many times.

2. Yellowing of melon skin.

When cucumbers are in the fruiting period, the leaves are large, the growth is fast, and the yield is high, but the skin of the melon is often yellow, which reduces the value of the commodity. The yellowing of the melon skin is caused by nitrogen deficiency and iron deficiency, and the measures that should be taken: first, apply 5 kg of ferrous sulfate per mu; The second is the foliar spray of multi-element liquid fertilizer (containing iron), which can make the melon skin turn from yellow to green.

The cucumber wilts at noon, because there is a lack of water, and the sun is too sunny.

Cucumber cultivation techniques.

5 cubic meters of organic fertilizer for land preparation and fertilization, 25 to 30 kg of superphosphate or 10 to 15 kg of diammonium phosphate (5 kg per cubic meter of superphosphate, 2 to 3 per cubic meter of diammonium phosphate). Before planting, plough the furrow, the width of the furrow is more than 15 cm, and it is covered with mulch.

Determination of the planting period: planting as soon as possible on the premise of ensuring that there is no freezing after planting, and planting in Chengde area is generally in late April and early May. Temperature index requirements:

The minimum night temperature is above 5 and the soil temperature is above 12 at 0 to 10 cm. The cucumber in the autumn dew field adopts the method of live broadcasting.

Planting density: 4000 to 4500 acres, planting in large and small rows, small row spacing 40 cm, large row spacing 80 cm, plant spacing 25 to 30 cm, planting with dark water method.

Manage shelfs. After planting, the shelf should be planted as soon as possible, and the seedling should be pumped by wind, and the shelf can be a flower stand or a herringbone frame, about 8 to 10 cm away from the root.

Tie vines. The "8" method is used to tie vines to prevent abrasion of stems and vines and sagging stems. Every 2 to 3 knots are tied, should be carried out in the afternoon, the stem vine is easy to break in the morning, the tightness of the vine should be suppressed and the weak should be strengthened, and the growth of the plant should be tied a little tighter, and the height of the growth point is consistent.

Pruning and pinching. For the main vine, all the side branches should be removed, and one or two leaves should be left after the side vine is fruitful, and all the tendrils should be removed. When the stem exceeds the head of the shelf, it is necessary to pinch the tip in time to promote the growth of the lower melon, and the method of twisting the tip can also be used to inhibit the growth of the upper part.

Fertilizer and water management. Timely watering and cultivating, the amount and frequency of water depends on the weather and growing period. Slow seedling water is watered 5 to 7 days after planting; water control, cultivating, and squatting seedlings before sitting on melons; When the root melon is 10 to 12 cm long, water the melon; Watering during the fruiting period is done every 5 to 7 days.

The principle of top dressing is that the front is light and heavy, a small amount of many times, urging melon fertilizer to be applied after the root melon sits, and the melon fertilizer is carried out after the root melon is harvested. Promote the use of organic fertilizer topdressing.

This is a normal physiological phenomenon, don't worry. At noon, the light is too strong, the temperature is high, and the transpiration is caused by excessive water loss.

Unsuitable planting environment: Cucumbers prefer an environment with plenty of sunlight, fertile soil, and suitable moisture. If the planting environment does not meet the conditions for cucumber growth, it is easy to cause the seedlings to become weak and weak.

2.Overwatering or lack of water: Cucumbers prefer warm, moist growing environments, but they should not be too wet or too dry.

Overwatering or lack of water can affect the growth and development of cucumbers, and the seedlings become sluggish. 3.Pest and disease infestation:

Some viruses and bacteria can infect cucumbers and cause yellowing, curling, and death of leaves. In addition, some insects such as aphids and whiteflies can also cause damage to cucumbers. Here's how to fix it:

1.Check whether the planting environment is consistent with the growth requirements of cucumbers, such as ensuring that the soil is fertile, has good air permeability, and reduces salinity. 2.

Control the amount of watering and allow the top layer of the soil to dry a little after each watering before watering the next time. At the same time, it also avoids wilting caused by lack of water. 3.

Pay attention to the prevention and control of pests and diseases, and do a good job of cleaning and disinfection regularly. In case of pests and diseases, measures should be taken to eliminate pests in time, and biological pesticides or organic pesticides can be used.

I received it yesterday afternoon, I planted it last night, and it wilted today, what.

Cucumbers prefer environments with plenty of sunlight, fertile soil, and suitable moisture. If the planting environment does not meet the conditions for cucumber growth, it is easy to cause the seedlings to become weak and weak. 2.

Overwatering or lack of water: Cucumbers prefer warm, humid and humid growing environments, but they should not be too wet or too dry. Overwatering or lack of water can affect the growth and development of cucumbers, and the seedlings become sluggish.

3.Pest and disease infestation: Some viruses and bacteria can infect cucumbers and cause yellowing, curling, and death of leaves.

In addition, some insects such as aphids and whiteflies can also cause damage to cucumbers. The solution is as follows: 1

Check whether the planting environment is consistent with the growth requirements of cucumbers, such as ensuring that the soil is fertile, has good air permeability, and reduces salinity. 2.Control the amount of watering and allow the top layer of the soil to dry a little after each watering before watering the next time.

At the same time, it also avoids wilting caused by lack of water. 3.Pay attention to the prevention and control of pests and diseases, and do a good job of cleaning and disinfection regularly.

In case of pests and diseases, measures should be taken to eliminate pests in time, and biological pesticides or organic pesticides can be used.

Dear, I received it yesterday and it wilted today, and it is likely to be the first reason.

Don't worry, it needs to slow down the seedlings. Let it get used to it for a day or two at first, and then the sun can't be too strong, remember to water it.

Give it a few days and it will be fine.

Remember to fertilize it in a few days.

How will it be in a few days?

Yes, let it slow down, don't worry, there's nothing wrong with planting it in the open air. Remember to teach it some water every day, but don't water it too much.

The sudden wilting of the top of the cucumber stalk can be caused by a variety of reasons. Here are some possible causes and solutions:

Water shortage: Cucumber plants have a greater need for water, and if they are not watered for a long time or the soil moisture is insufficient, the plants are prone to wilting. At this time, it is necessary to replenish water in time to keep the soil moist, and at the same time be careful not to overwater, so as not to cause hypoxia in the roots.

Lack of fertilizer: Cucumbers have a high demand for nutrients during growth, and if there is a lack of nutrients in the soil, the plant will also wilt. At this time, it is necessary to apply fertilizer in time, and you can choose organic fertilizer, compound fertilizer, etc., and apply it according to a certain proportion to meet the nutrients required for plant growth.

Pests and diseases: Wilting at the top of cucumber seedlings can also be caused by pests and diseases. For example, cucumber wilt, cucumber aphids, etc., these pests and diseases can cause the leaves of the plant to wilt, the top of the plant wilting and other phenomena.

At this time, it is necessary to take timely control measures, such as spraying fungicides, insecticides, etc., to reduce the harm of pests and diseases to plants.

High temperature: The suitable temperature for cucumber growth is 20-30, if the temperature is too high, the plant will grow slowly, and the ridge of Dingkai will wilt. At this time, it is necessary to take cooling measures, such as shade nets, spray cooling, etc., to maintain a suitable growth temperature.

Lack of light: Cucumbers are light-loving plants, and if there is not enough light, the plant will grow slowly and wilt at the top. At this time, it is necessary to adjust the light conditions of the plants to ensure sufficient light time to promote the growth of the plants.

Culture medium problem: If the culture medium of cucumber seedlings is not suitable, it may lead to poor root development, which will affect the plant's ability to absorb water and fertilizer, and then lead to wilting at the top. At this time, it is necessary to check the condition of the culture medium, and if there is a problem, it needs to be replaced in time.

In summary, the top wilting of cucumber seedlings may be caused by a variety of reasons, which need to be analyzed and treated according to the specific situation. In daily management, it is necessary to pay attention to the growth of plants, find problems in time and take corresponding measures to ensure the healthy growth of cucumbers.