Leaves curl on the apple tree
Every gardener is pleased to see a beautiful flowering apple tree on his site. You can immediately understand that the variety was chosen correctly, the soil is good, feeding is only beneficial. But it becomes sad if the leaves are curled on the apple tree. There are, of course, a number of reasons for such changes that caused these changes. To prevent such problems from happening, you need to properly carry out the prevention and care of the plant. In the fight against curling foliage, it is best to give preference to biological products that have a safer composition.
Leaves curl on an apple tree: the main reasons why apple leaves curl
There are a wide variety of reasons why apple tree foliage curls. Among the main and frequently occurring causes, the negative impact of the red-gall aphid, scab or, for example, powdery sundew, developing in a waterlogged climate, is considered. Plants that receive few nutrients can suffer from twisting foliage, so the gardener will have to do periodic feeding for the apple tree. Drought also negatively affects the plant, so frequent and abundant watering will be beneficial.
Why do apple leaves curl? The reason is the red-gall aphid
This enemy rapidly eats such varietal varieties of apple trees as Golden Kursk Renet, Antonovka, Cinnamon striped. It is not clear why aphids attack the plant. It can be assumed that the varieties have a small leaf thickness.
To defeat the apple enemy, you do not need to immediately take chemicals, as there is a high probability of destroying beneficial insects. To partially destroy aphids and ants, you need to install an adhesive belt with a height of 1-1.5 meters in the middle of spring on the planting area.
The main distributors of red-gall aphids are considered ants... Aphids from their antennae spread a span - a sticky mixture that insects absorb.
The simplest and cheapest option is to use adhesive strips. This helps to reduce the number of malicious individuals. In addition to aphids in deadly nets, you can capture a leaf-rolling caterpillar, an earwig, a cap moth and an apple flower beetle that falls into dexterous nets, since it is very careless.
In order to prevent the appearance of an enemy, you need to constantly inspect the apple trees and immediately immediately clean up the bark that has peeled off. Since this is a sweet spot for aphids, they will lay eggs there. In the future, impudent offspring will be formed.
Sticky tapes are not a 100% guarantee against pests. In order to have some kind of result, the Velcro must be changed 2 times a week. Fishing belts need to be replaced 3-4 times per season, as new offspring do not appear very often.
The sticky belt should be tightly close to the trunk, since the red-gall aphid is small and can crawl under the place where the dexterous belt does not fit snugly. In order to apply everything well, the bark is initially cleaned from obsolete parts.
To prevent aphids from dominating the site, the number of ants must be significantly minimized. Unfortunately, in this case, you will have to use strong chemical poisons, such as, for example, Kemifos and Nitrafen. You can apply folk methods.Treat the nests with soapy water or cow urine. But it is not a fact that the result will last for a long time.
Leaves curl on an apple tree, what to do if aphids attack
This enemy acts actively and swiftly. Red-haired aphids, for example, can be seen on an apple tree by swelling reddish in color. Common aphids are carried by the same ants.
Branches and foliage look battered. The pest absorbs juice from young shoots and leaves. Therefore, they are deformed, growth stops, photosynthesis is extremely poor.
To defeat aphids, you must initially plant the apple trees correctly. The trees need to be spaced apart so that the plants get enough oxygen. You can also cut off infected parts of the apple tree, destroy ants.
As a last resort, fungicides can be used, but this is not the safest method for humans. Apples can be eaten 30 days after processing. It is important to remove weeds, which are also considered to carry aphids.
Attention: If several leaves on a tree are damaged by aphids, it would seem that there is nothing terrible here. But the pest can carry a variety of terrible diseases that can destroy the entire crop at the root.
When fighting aphids, you can use liquid soap, peppers, or strong poisons.
Due to the disease, the foliage begins to curl in the plant, among other negative factors. To understand whether the apple tree is infected with an ailment, you need to conduct a thorough examination of the plant. First of all, young leaves are amenable to infection, since they have a large amount of juice in the foliage.
Powdery mildew is more common in March. If it is found that there is a whitish powdery coating on the leaf, then you can begin to fight the problem. Otherwise, the leaves will dry out and curl.
If you plant apple trees very close to each other, then there is a great risk that the disease will affect the plants. Powdery sundew occurs in warm and humid climates. The disease can cut yields in half, although the sundew looks very harmless.
Treatment must be done on time. If the apple trees are severely affected, then the best option would be to use chemicals, for example, Topaz, which is used according to the instructions.
Using folk methods only slows down the sundew, but does not completely cure it.
As a treatment, you can use Bordeaux solution (1%), Oxyhom, HOM and other drugs. The processing of the apple tree is carried out 3 weeks before picking the fruits. Bordeaux solution is used as an additional remedy, since it is not potent for complete healing.
To reduce the sundew factor next year, treatment is needed in the fall. Also, in the spring, you need to remove the spoiled parts of the apple tree, and then destroy it with fire.
This is a fungus that rolls the leaves of apple and pear trees. The disease is spread by spores. In humid climates, trees are likely to become infected very quickly. The primary sign of the appearance of scab is the formation of a brownish-olive bloom on the leaves. In addition to the fact that the sheets curl, the fungus spoils the apples, they begin to rot and crack.
To prevent the fungus from arising, preventive measures must be taken. Remove leaves from around trees. There may be a fungal infection in this place, which must be cut and burned spoiled apples and shoots.
In March, you can carry out the treatment with gentle biological products, for example, such as Bordeaux solution or Fitosporin-M. But if the situation was not saved by harmless and safe means, then strong chemicals can be used. Alternatively, you can apply Filolavin.
If strong remedies are used, then for the best result they should be used before flowering and at the time of its completion.When taking preventive measures, it is imperative to use protective equipment - for example, gloves. Sometimes the use of strong poisons does not guarantee the complete destruction of the scab. Then, to save the trees, you need to feed the plants with special means.
You can make your own potent solution from the following ingredients:
- Ammonia nitrate - 10 grams;
- Potassium sulfate - 15 grams;
- Ammonium sulfate - 10 grams;
- Potassium nitrate - 10 grams.
All components are diluted with liquid. The mixture is sprayed on the plant from a spray bottle.
Leaves curl on the apple tree due to lack of nutrients
The foliage of the apple tree can curl due to the small amount of nutrients in the soil.
If there is a small amount of nitrogenous compoundsthen the leaves of the plant will accumulate and take on a light green color. If the reason is not removed in time, then the foliage of the apple tree will begin to turn yellow and fall off before a certain time.
To replenish the nitrogen content, you need to feed the plant with ammonia nitrate about 20 grams diluted with water. Also, processing can be carried out in the evening. A 0.5% urea solution, with which the apple tree is treated in the evening, can serve as a substitute. Careful attention must be paid to the processing of the leaves.
With a lack of phosphorus, the foliage loses its color and begins to bronze, blush or even turn blue. The foliage dries up and turns black as a result. If the plant is planted in acidic soil, then you need to feed the apple tree with organic fertilizers.
To quickly help the plant in replenishing phosphorus, you need to add superphosphate. If the apple tree is on acidic soil, then instead of superphosphate, you need to use phosphate rock and dilute it with water.
Before starting top dressing, you need to weed the soil around the trunk. In order for the fertilizing material not to evaporate from exposure to sunlight, you need to moisten the soil and add mulch from humus.
Also, if the soil is excessively acidic, then potassium monophosphate is introduced in advance. And then a week later, the main substance is added.
Basically, potassium deficiency is very noticeable on acidic soil and on soil where there is a large amount of manganese and potassium. To bring potassium back to normal, fertilize the area around the tree with potassium sulfate or wood ash.
The last element is best used as an auxiliary. Since the fertilizer has a negligible amount of potassium in comparison with other elements. Often, the main growth site of a plant can begin to die. This will become a 100% guarantee that the apple tree lacks potassium.
To save the day, you can add lime to the soil. The place around the trunk must be pierced, deepening by 3 cm, pour two buckets of liquid and pour 80 grams of lime. After 2 days, potassium sulfate can be added under the trees. After the soil is covered with 2 cm of humus mulch. If the plant lacks useful elements, the leaves begin to curl and fall off.
Poor hydration as the reason that leaves curl on an apple tree
Insufficient soil moisture is a direct consequence of the foliage beginning to curl. The humidity indicator should be 70-80%. Under these conditions, trees develop and grow best.
Useful trace elements dissolve in the liquid. If there is not enough water, then the substances will not be absorbed in any way.
With excessive moisture, the root system begins to rot and the ability to accept useful elements is disrupted.
The most effective is the drip irrigation system. You can take a barrel that stands under the drain, rising by 0.5 meters.Water from the roof will get into it, on top of it you need to put a net from mosquitoes and mosquitoes, which will take away all the garbage. At the bottom of the container, you need to make holes and insert tubes with special droppers into them. It is necessary to adjust them so that liquid enters the landing area.
With proper manual irrigation, water is used after rain or thawed water. Apple trees are watered in late spring during the growing season. At the time of flowering, buds are set and ovaries are formed. At the moment of apple growth. The soil must be moist and saturated with oxygen, so water and weed regularly.
In order for a plant to bear a large number of fruits, it only needs to be looked after. Paying attention to your brainchildren, you can definitely hope that the effort and time spent will pay off.