What to do if the leaves on the apple tree dry?
An apple tree is a regular in almost any summer cottage. It is difficult to imagine a person who would be indifferent to apples. Since the beginning of the season, gardeners have been looking forward to when the apples will ripen, and it will be possible to taste their juicy pulp, prepare compotes, and prepare jam and preserves for the winter. However, often gardeners are faced with such a problem as leaves drying on a tree, which can lead to a significant reduction in yield. We will learn about methods of dealing with this condition below.
The reasons
Before proceeding to correct the situation, you need to find out what this state of the apple tree is connected with. There may be several reasons.
Diseases and pests
Among the diseases, the most common are the following ailments of the apple tree.
- Rust. The disease affects the leaves, forming orange or red spots on them with black speckles. The spores of the pathogen infect the leaves in the spring, the leaf plate turns yellow early, withers, then dries up.
- Brown spotting. With this disease, the leaves become covered with dark yellow spots, brown at the edges, dry out and fall over time. In this case, the infection persists in fallen leaves.
- Chlorosis. In this case, the leaves evenly turn yellow, which is a consequence of a lack of nutrients. During the course of the disease, the leaves dry, the branches and trunk die off.
- Scab. If the tree is struck by scab, then a brown coating forms on the leaves, and they crumble. Cracks and dark spots form on the fruits.
- Powdery mildew. A sign of this disease is a gray or white coating on leaves and flowers, which eventually becomes brown. The leaves affected by the disease curl and dry out, the buds do not bear fruit.
The most well-known pests that cause dry leaves are the following insects.
- Aphid. The favorite habitat of this individual is the underside of a young leaf. The plate damaged by insects curls up and dries up, after which the pest moves to the next specimens.
- Wood bug. The main food of this pest is juice from ovaries, buds, young leaves. The activity of the bugs provokes the deformation of the leaves and their drying.
- Apple fly. The larvae of this insect gnaw out the leaf tissue, and do not touch the top layer. Under the influence of the “work” of future flies, yellow-green mines are formed on the plates, which darken and dry out over time. Most often, the pest infects leaves in the shaded part of the crown.
- Spider mite. This insect sucks the nutritious juice from the leaves. You can find out about the appearance of a tick by the cobweb woven by it on the petiole.
Lack of moisture and nutrients
If the tree does not have enough moisture, then mass drying of the leaves begins, the tips of young shoots dry out first. Only due to the liquid, the plant can provide itself with nutrients from the soil, so it suffers without moisture and from a deficiency of nutrients - zinc, potassium, magnesium, manganese. This is the most common cause of drying leaves.
Other reasons
There are several other reasons that can provoke this condition.
- Wetting of the root system. Usually this is due to the close occurrence of groundwater.The roots of this culture have a branched system, extending to a great distance in depth, sometimes reaching several meters. There may not be useful substances here, the roots experience an excess of moisture, and the leaves begin to dry. Fruit trees become especially sensitive to waterlogging of the soil in June-July, so during this period, wetting of the roots may be the cause of dry leaves.
- The freezing of the apple tree. This is usually a secondary cause of leaf drying. More often, trees that are weakened due to disease, pest attacks, and lack of moisture freeze out. This condition is also characteristic of young plants.
Damaged apple trees are poorly prepared for the winter cold, which becomes the cause of dried foliage in the future. Also, a tree can freeze if it had to survive a snowless winter.
- Chemical burn. It can occur if the gardener went too far with the treatment of the tree from insects and diseases. Also, the action of solutions of iron and copper sulfate leads to this, if the treatment with these agents was carried out in the presence of young leaves on the tree.
- Rodents. Mice, rats and moles love to feast on the bark of young trees. Traces of their stay can be seen on the border between the trunk and the root system.
If the trunk or roots are severely damaged, then nutrients may not reach the branches, as a result of which the leaves also do not receive the necessary elements and dry out.
Methods of treatment
If the summer resident drew attention in a timely manner to the drying of the leaves of the apple tree, then the crop can still be saved. Consider the main methods of treating a damaged tree.
- If dried leaves are seen on a seedling, then it should be transplanted to another site. Apparently, this place did not suit the young shoot.If a bundle is found at the grafting site, then, alas, the tree can no longer be helped.
- If frostbite or sunburn is the cause of early dried foliage, it is recommended to whitewash the branches and trunk in early spring with special paint, which is offered at any specialized store.
- If the reason is a lack of nutrients, then you should feed the apple tree with them. This should be done during watering and fertilizing with water. You can also spray the tree and leaves with the missing substance. If there is not enough nitrogen, then manure, compost, blocks after growing mushrooms will become good fertilizers. In case of potassium deficiency, ash, ash, lowland peat can be used.
- If the leaves on the tree dry from excess nutrition, then abundant watering under the root can save it.
- Sometimes the cause is difficult to find. If this is an old tree and all the conditions for its cultivation are met, then the factor provoking early drying of the foliage may be the lack of rejuvenating pruning. In this case, this defect needs to be corrected.
A separate item should highlight the methods of combating insects and diseases. For each case, gardeners have developed the most effective ways to solve the problem.
- Rust: all damaged leaves are eliminated, the affected branches are cut off, the bush is sprayed with a solution of "Cineba" 0.4% or preparations "Topaz", "Vectra".
- Brown spotting: in the spring before flowering and after this period, the bushes should be treated with a 1% Bordeaux mixture or its substitutes (“HOM”, “Abiga-Peak”), all damaged leaves are collected and destroyed.
- Scab: 3-4 times per season, you need to spray the suffering specimen with the funds "Skor" or "Fitosporin".After processing, the tree is watered with 30 liters of water and nitroammophoska diluted in water (2-3 liters) is added.
- Powdery mildew: you can fight the disease with a one percent solution of colloidal sulfur.
- Aphid: preparations "Confidor" and "Iskra" help in the fight against this pest. Among folk methods, decoctions of wormwood and garlic are widely used.
- Spider mite: insecticides "Fufanon", "Bi-58 New", "Karate-Zeon" have proven themselves well. A solution of sulfur-tar soap and onion infusion are popular.
- Apple fly: it is necessary to destroy all the leaves on which the larvae managed to leave mines, and treat the tree with Kemifos, Actellik or Inta-Vir preparations.
Preventive measures
To avoid drying of the leaves of the apple tree, you should warn in advance all the reasons that can lead to this condition. Use the following prevention tips.
- As soon as a young shoot is planted on the site, its development should be carefully monitored.
- Before buying a seedling, make sure that the tree has an actively developing root system, there is no mold on young roots, and the trunk itself has an even structure. The graft site must be expressed. There should be no injury on the bark, and the trunk can be considered healthy if it has an even color.
- In the autumn, it is imperative to remove fallen leaves so as not to spread spores and various infections. It is advisable to destroy the collected leaves, the ash remaining from burning is recommended to be used as a fertilizer.
- When pruning and shaping the crown, a disinfected tool must be used. The damage left by the tool is recommended to be closed in order to prevent the penetration of infection.
- After feeding, the plant needs to be mulched. Mulch will allow the tree to survive the winter without freezing and retain moisture.
For this crop, decorative wood chips, sawdust, mowed grass or straw are more suitable as mulch.
As a preventive measure, it is very important to feed the tree at least three times a season. To do this, use the following rules.
- spring it is better to use nitrogen fertilizers. Feeding method - root. Alternatively, you can feed the plant with humus (3-4 buckets) or urea (600 g). In this case, it is recommended to distribute the product along the perimeter of the crown at a distance of up to half a meter from the base.
- Summer the most preferred nutritional options are phosphorus-potassium fertilizers (100 g of superphosphate, 70 g of potassium sulfate, 10 l of water), a solution of bird droppings or slurry, urea (100 g per 10 l of water). Liquid fertilizer is recommended to be used in drought, in the rainy period it is better to use dry fertilizers.
- autumn it is desirable to choose superphosphates and potassium sulfates for culture nutrition. Nitrogen-containing agents that reduce frost resistance should be abandoned.
It is good if it is possible to introduce organic matter in the autumn period, for example, humus, peat, compost. It is necessary to distribute the substances along the perimeter of the crown by digging.
Tips for beginner gardeners
Experienced agronomists suggest that novice summer residents use the following recommendations for growing apple trees, to prevent premature drying of the leaves.
- In order not to encounter such an ailment as scab, you can pre-purchase a variety that is resistant to this disease, for example, Bogatyr, Sinap, Tikhomirov's Memory. The varieties most vulnerable to this disease are Belyi Naliv, Zhigulevskoye.
- To make it easier for the nutrients to be delivered to the tree, you can resort to the help of green manure, that is, fertilizers that are embedded in the soil when digging. This is usually done in spring or summer. Beans, peas, buckwheat, and alfalfa are considered the most preferred siderates for apple trees.
- When choosing a site for cultivation, pay attention to loose loam. Wet places and areas with close groundwater should be avoided.
- If ash is chosen as a top dressing, then it is required to make it very carefully. An alkaline environment is dangerous for beneficial microorganisms in the soil, so an excess of ash is worse than its lack.
- When using superphosphates, it is recommended to dissolve them in boiling water, since they are poorly diluted in ordinary water. In the case of foliar feeding, the composition is prepared to a concentration of 3%.
- It is necessary to buy poisons and antifungal drugs in special nurseries and trusted stores.
Acquiring these funds from the hands or in places of spontaneous trade is dangerous.
How to determine that the apple tree lacks potassium? The answer to this question awaits you in the next video.