What happened when the leaves of the tree were yellowed after the grapes were transplanted?

If transplanting, you need to cut off a part of the branches and leaves, put them in a cool place, or shade the sun, and transplant the seedlings for half a month to keep the soil moist.

Apply with powdered organic fertilizer to watering effect.

Vine cultivation techniques.

1. Grape growth habits.

This crop is suitable for growing in relatively cool locations in tropical areas where there is a lot of rain, and the minimum temperature they can tolerate is about -3 degrees Celsius, and some can persist until -4 degrees Celsius. It is the type of crop that grows towards the sun, so it needs good sunlight and the moisture of the land should be higher. However, we must not have the problem of stagnant water.

Planting this crop is also considered trouble-free, it can resist drought for a short time, and the quality requirements for the land are not too high, as long as the drainage is better, not saline-alkali land is not a big problem.

2. Tree grape propagation technology.

There are many ways to grow this crop, such as the most common use of seeds, or grafting, cuttings, etc., each method corresponds to different results, and the applicable situations are also different.

1) The way to plant seeds is currently the most used method, because this way germinates more. When harvesting the fruit, you only need to put it in a bag, then put it in a refrigerated environment, and when you want to plant it, you can take it out, clean it, and use it directly. However, the refrigeration time can only be between one month and two months, not too long.

Generally speaking, it takes about 20 to 40 days for planted seeds to germinate, depending on the temperature at that time.

2) Grafting is also one of the methods used in many places, some of this crop takes six to ten years to produce fruit, if this method is used to plant can advance the time of fruiting, generally the time can be shortened to three years. However, planting in this way depends on the season, and the success rate will be higher only in autumn and winter, and other seasons are not suitable.

3. Reasonable fertilization.

According to the stage of tree growth, we should add fertilizer appropriately, so as to provide enough nutrients for its growth and ensure that the color of the fruit is relatively uniform. Although the requirements for planting this crop are not very demanding, everyone needs to be diligent.

If the leaves of the vine turn yellow and dry, it is necessary to prune the foliage, control watering and fertilization, regulate the light, and pay attention to the control of pests and diseases.

1. Prune branches and leaves

Cut off the yellowing and dry leaves, branches and leaves reasonably, cut off all the aging branches, and remove the sick and weak branches in time.

2. Control watering

Lack of water can cause the leaves to turn yellow, so you need to water them in time to keep the soil moist. Overwatering or not draining in time during the rainy season will also cause the leaves to turn yellow, so reduce watering and remove stagnant water in time when there is a lot of rain.

3. Control fertilization

Too much fertilization can burn the root system, causing the leaves to turn yellow, and watering can be done to dilute the concentration of nutrient fertilizer. Lack of fertilizer can also cause yellowing of leaves, so add a small amount of vinegar when fertilizing.

4. Adjust the lighting

Insufficient light can cause yellowing of leaves, and insufficient natural light can be used to increase the light by artificial lighting. When there is a lot of strong light weather, it is appropriate to take a semi-shaded way to avoid long-term direct sunlight.

5. Prevention and control of pests and diseases

To remove the yellow leaves in time, you can spray insecticides for control.

The methods of rescuing the yellowing and drying of the leaves of the vine include water control, suitable light, increase or decrease of fertilizer, replacement of soil, external damage to the spine or pests and diseases, as follows:

1. Control moisture.

If the leaves of plants are yellow, look at the soil moisture first, then generally check whether the soil is short of water, or too much watering will also cause the leaves to turn yellow. The edge of the leaf is a phenomenon of water shortage, which should be watered in time and slowly infiltrated to ensure that the soil locks in water and alleviates the phenomenon of yellow leaves; The yellowing of the new leaves and the lack of luster are a phenomenon of excessive moisture, and the water should be stopped immediately.

2. Appropriate lighting.

Carefully check whether it is due to the yellowing of the leaves caused by insufficient concealed light for a long time, remove the concealment measures in time, and supplement the light; On the contrary, long-term direct sunlight will also cause yellowing, dryness and burn of leaves, and shading measures should be taken in time to alleviate it.

3. Increase or decrease of fertilizer.

The yellowing of grape leaves may also be caused by no top dressing, less top dressing, and improper top dressing. During the growth period, grapes should be supplemented with fertilizers in a timely manner according to their growth, generally using fertilizers such as phosphorus and potassium, and adding some trace element fertilizers to maintain the plant's absorption and rapid growth.

4. Replace the soil.

If the soil environment is not good, it will also cause the leaves of the grapes to turn yellow. It is necessary to choose loose and breathable soil to ensure that the grape roots can breathe and grow, and after the plant grows steadily, the soil should be properly turned to avoid soil compaction and hinder growth.

5. External damage or pests and diseases.

Check whether the branches and roots of the plant are damaged and broken, and the external force will also affect the growth of the plant, and the leaves will turn yellow. In addition, the appearance of pests and diseases will also affect the growth of grapes, resulting in yellowing of leaves, and it is necessary to spray drugs in time according to the situation.

Clause. First, first of all, we must find out the reason, carefully check the roots, stems, leaves, and fruits of the vine whether they are harmful insects, the most common pests of grapevines are red spiders, scale insects, if the pests need to be sprayed with pesticides, because the tree bears fruit can only be sprayed locally with a small sprayer.

Clause. 2. Check whether the soil of the vines is too moist or too dry, if it is too wet, you need to stop watering, if it is too dry, you need to water it appropriately.

Clause. 3. Check whether the vines are yellow due to lack of nutrients, and if so, they need to be fertilized appropriately to supplement nutrients.

Clause. Fourth, check whether the vine is yellow because of too much fertilizer, if so, you need to stop fertilizing, reduce the amount of fertilizer, etc.

The leaves of the vine are yellow and dry, possibly infected with leaf spot.

When the vine becomes ill, brown spots appear on the leaves, thickening the lesions, and then the spots become connected in one piece, causing the leaves to turn yellow and fall off. To prevent and control this disease, we should strengthen field management, control nitrogen fertilizer application, reasonable fertilization, do a good job in pastoral cleaning, and spray 1500 times of 50% sterilization soluble powder and 400-500 times of 30% basic copper sulfate suspension in the early stage of the disease.

1. What is the disease?

Symptoms: The leaves of the grapes are yellow and dry, which may be due to leaf spot infection. This is a common disease caused by a fungal infection, when the vine becomes ill, brown spots appear on the leaves, thickening the lesions, and then the spots become connected in one piece, causing the leaves to start yellowing and eventually causing the leaves to fall.

Solution: Strengthen field management, control nitrogen fertilizer application, and reasonably apply fertilizer to improve disease resistance. Do a good job of cleaning the garden, cut off the sick branches and leaves, remove and destroy them, and prune regularly to increase ventilation and light.

In the early stage of the disease, spray 1500 times of 50% chlorpyridoxin soluble powder, 400-500 times of 30% alkaline copper sulfate suspension, 500-600 times of 70% mancozeb wettable powder, etc.

2. Other causes of yellowing and dryness.

1. Lack of water and fertilizer: The normal growth of grape vines requires sufficient water and fertilizer supply, if there is a lack of water and fertilizer, it may affect the growth, resulting in yellowing and dry leaves. Fertilizer can choose fertile leaf water-soluble fertilizer series.

2. Root damage: If you water too much, it will lead to water rot roots, if you fertilize too much, it will also lead to root burning, after root damage, the normal function of transporting water and fertilizer will be weakened, and it will also lead to yellowing and dryness of the leaves.

3. Pesticide effect: When spraying grapes, if the type of pesticide is not right, or the fertilizer concentration is too high, it may cause the Portuguese tart to be infected with pesticide damage, and it will also cause the leaves to turn yellow and dry.

1. Causes of yellowing of grape leaves:

1. If the leaves of the whole garden are yellowed quickly, it is likely to be a pesticide damage; (Because of the lack of nutrients or diseases, it is unlikely that the whole garden will break out soon).

2. If it is sporadic and some plant leaves are yellowing and there is a process, it may be a deficiency of nutrients, root disease or leaf disease;

3. If the yellowed leaves have green veins, but the veins are yellow, it may be iron deficiency or magnesium deficiency. We can continue to subdivide, if the old leaves are yellow, the new leaves are not yellow, they can be identified as magnesium deficiency, if the old leaves are not yellow, the new leaves are yellow, they can be identified as iron deficiency;

4. If the veins of the yellowed leaves are yellow and the veins are green, then it can be identified as a viral disease;

5. If there are yellow spots on the yellowed leaves, and the yellow spots are slowly necrotic, it can be identified as a fungal disease of the leaves;

6. If the yellowed leaves first dry up from the edge of the leaves, but the leaf veins and leaf veins are still normal, then it can be identified as root damage or fertilizer damage;

What are the prevention and control measures for yellowing of grape leaves?

1. Yellowing of leaves caused by pesticide damage.

The yellowing of the leaves caused by the pesticide damage is generally manifested in 3-5 days after the spraying, and the location of the pesticide damage is not the old leaves, nor the new leaves, but the middle leaves, and it is the yellowing of the whole garden.

1) Mancozeb pesticide damage.

pesticide damage caused by inferior mancozeb;

The use of low-quality mancozeb leads to yellowing of leaves.

Generally, it is not recommended to use non-complexed mancozeb at the young leaf stage and young fruit stage, and it is recommended to use high-quality fully complexed mancozeb, mancozeb or propylene zinc.

2) Symptoms of drug damage caused by organophosphate agents.

The leaves are tender in the young fruiting stage of grapes, and the use of organophosphate agents in hot weather will also cause burns and yellowing. The picture above** shows the yellow leaves produced after the use of organophosphate-containing agents.

3) The pesticide damage caused by the fogging machine.

The spraying of the mist machine saves water and trouble, but if it is not operated properly, it will lead to uneven local medication and drug damage symptoms.

2. Yellowing of leaves caused by nutrient deficiency.

1) Magnesium deficiency yellowing.

Magnesium deficiency causes yellowing, which does not occur in the whole garden, and manifests itself as yellowing of old leaves and normal of new leaves; And only the veins of the leaves are yellow, and the veins are still green.

2) Iron deficiency yellowing.

Iron deficiency causes yellowing, which does not occur in the whole garden, and manifests: new leaves are yellow, old leaves are normal; And only the veins of the leaves are yellow, and the veins are still green.

3. Yellowing of leaves caused by viral diseases.

The yellowing of leaves caused by viral diseases occurs sporadically, mainly manifested in the yellowing of leaf veins, which are still green between leaf veins.

4. Yellowing of leaves caused by fungal diseases.

Leaf disease causes yellowing, which only forms small yellow spots on the leaves, and then the lesions dry up and die.

5. Yellowing of leaves caused by fertilizer damage and root damage.

The yellowing of the leaves caused by this cause first appears as a yellowing of the edges of the leaves, followed by gradual drying, rather than starting from the inside of the leaves. The above are several causes of yellowing of grape leaves, in production, find the cause of the disease, and deal with it accordingly.