What is the reason why the cucumber leaves of potted plants slowly turn yellow

What is the reason for the yellow leaves of cucumbers?

1. Weather reasons Humidity and temperature change greatly, which is easy to cause cucumber yellow leaves, and too high or too low temperature will also cause poor growth of cucumbers and yellow leaves.

2. Fertilizer and water reasons Too much watering can easily lead to cucumber wilting, and it needs to be drained in time when it encounters more rain, and serious drought will also affect root growth. In the application of fertilizers, there is generally less lack of macroelements, and medium and trace elements such as calcium and magnesium are often deficient, especially the lack of magnesium has a greater impact on the photosynthesis of cucumbers. Excessive fertilization can also lead to root burning, which can also cause the cucumber leaves to turn yellow.

3. Field operation Field operation may damage the root system of cucumber, and may also lead to yellowing of cucumber leaves.

4. Diseases Some diseases will cause yellowing of leaves, and cucumber yellowing caused by diseases will generally appear diseased spots. How to solve the problem of cucumber yellowing, mainly from the field management, fertilizer and water, root repair and other aspects to solve, in the greenhouse management, need to pay attention to the temperature and humidity changes in the greenhouse, timely insulation or ventilation, is currently in winter, more attention should be paid to the changes in the greenhouse.

First of all, whether the maintenance environment is lower than 10 in winter, this low temperature environment is easy to cause slight frost damage, and the symptoms only appear after the temperature rises in spring.

The second is the problem of maintaining the environment, in winter and early spring, it is necessary to put the cucumber in a sunny place without shading, otherwise it is not conducive to growth.

Watering should also not be too diligent, smooth sailing can be done thoroughly after the topsoil has dried, while aloe vera can be dry for several days, but it is best to water the potting soil after it is dry, not to keep it moist. Keep the cucumber moist only when the temperature is above 20 and moist when the temperature is above 25. Yellowing of leaves is not a fertilizer damage, but when there is a lack of fertilizer, it is easy to make smooth sailing and yellowing.

The leaf tips are dry, mainly because the air is too dry or the light is not suitable, both plants need a high air temperature to grow well, especially if the wind is smooth, the dry air will wilt, yellow, and scorched.

Cucumber leaves are caused by excessive watering, improper fertilization, disease, the amount of each watering should not be too large, if you water more to drain in time, cucumber fertilizer damage, you need to water immediately, in addition, you should also pay attention to nutritional balance when using fertilizer, cucumber disease, spray in time, but also cut off the branches and leaves of diseases and insects as soon as possible.

Cucumber yellow leaves are caused by excessive watering, improper fertilization, and disease, the amount of watering each time is not too large, if you water more to drain in time, cucumber fertilizer damage, you need to water immediately. In addition, when using fertilizer, we should also pay attention to balanced nutrition, cucumber disease, to spray in time**, but also to cut off the branches and leaves of diseases and insects as soon as possible.

Causes of yellowing of cucumber leaves.

1. Overwatering

The yellowing of cucumber leaves can be caused by too much watering, if the soil is not breathable, there will be water accumulation after watering, so that the roots are soaked in water, and there is a lack of oxygen, then the leaves will turn yellow.

2. Improper fertilization

When fertilizing cucumbers, we must pay attention not to apply fertilizer with too high concentration, otherwise it is easy to burn roots, which will lead to yellowing of cucumber leaves, and potassium deficiency during growth, the old leaves of cucumbers will be yellow, lack of iron and calcium, and the young leaves of cucumbers will turn yellow.

3. Disease

Cucumber leaves appear yellow, first of all, you need to observe whether there is a problem with the root pulse socks, such as infection with wilt, root rot, etc., cucumber leaves will be yellow, secondly, cucumber downy mildew, horn spot, etc. will also cause yellowing of leaves, at this time need to be timely symptomatic**.

Luteophyte remedy.

1. Control wateringCucumber watering over the amount of lead silver ants, must pay attention to do a good job of drainage, the amount of each watering is not too large, if this happens, you can appropriately use some rooting agents to promote root recovery.

2. Reasonable fertilizationCucumber fertilizer damage, need to be watered immediately, so that the concentration of fertilizer in the soil can be diluted, in addition, when using fertilizer, we should also pay attention to nutritional balance, timely replenishment of potassium, iron, calcium.

3. Disease prevention:If cucumber is diseased, it is necessary to spray in time**, and cut off the branches and leaves of diseases and insects as soon as possible to reduce the spread of bacteria.

There are several reasons for the yellowing of cucumber leaves:One is to water it too much, the root system will rot due to lack of oxygen in the soil, and yellow leaves will appear.

The second is to apply too much fertilizer to it, and if there is excess nutrition, it will also cause the leaves to turn yellow.

The third is to be directly exposed to the sun by the intensity of summer.

Fourth, there is a lack of trace elements.

What's wrong with the yellowing of cucumber leaves.

There are two main manifestations of yellowing of cucumber leaves, the first is by camp; Caused by the deficiency of nutrients, the general nutrient deficiency is manifested in the fact that cucumber leaves are divided into two situations: middle and lower old leaves first yellow and middle and upper young leaves first yellow.

The second is caused by pests and diseases, the manifestation caused by pests and diseases is that the leaves wilt at noon, and can recover in the morning and evening, if they do not recover after a few days, then finally the whole plant wilts.

Causes of yellowing of cucumber leaves.

1. Environmental changes: When the cucumber environment changes, it is mainly the sudden change of temperature, humidity and light that will cause the cucumber leaves to turn yellow.

2. Too much watering: If the cucumber is accidentally watered too much, it will cause the cucumber leaves to generally turn yellow, especially the upper leaves become smaller, grow slowly, and wilt in severe cases.

3. Excessive fertilization: cucumbers require more nutrients in the cultivation process, but if too much fertilizer is applied, it will lead to excess nutrients in cucumber plants, which will lead to yellow leaves.

Cucumber leaves are treated with yellowing.

If the yellowing of cucumber leaves is caused by overwatering, then it is necessary to stop watering immediately, and loosen the soil, dry the soil, and if the leaves are yellowing caused by excessive fertilization, water the plant with an appropriate amount of water to dilute the fertility.

Prevent yellowing of cucumber leaves.

1. When planting cucumbers, the surrounding environment should be controlled, and the temperature of the leakage should be controlled at about 28 degrees during the day and about 16 degrees at night. The humidity should also be kept at about 80%, not too high or too low in spring, to meet the light needs of cucumbers, and improve the photosynthesis of cucumbers.

2. Control cucumber watering, keep the soil moisture content at about 88%, cucumber likes moisture, but excessive humidity causes various pests and diseases, watering with a small amount of watering as the principle to prevent too much water from affecting the growth of cucumbers.

3. Strictly control the frequency and amount of fertilizer application, adjust it according to the growth stage of cucumber, add about 2 times at the seedling stage, try to use fast-acting water-soluble fertilizer, mainly potassium fertilizer in the middle and late stages, balance the nutrient ratio of fertilizer, and add 1 time every half month.