How to deal with diseases and pests aronii (mountain ash), black fruit

Chokeberry possesses sufficiently good immunity, therefore, diseases and pests disturb it extremely rarely. However, the probability of the disease can vary greatly depending on the geographical location, climate, proximity to other plants and other factors. Therefore, it is very important to know which pests and diseases can be encountered when growing chokeberry to avoid problems with the plant. Prevention of chokeberry from diseases and pests is a simple action, and some procedures help to fight several pests at once, therefore it is recommended to follow all the recommendations in order to secure the plant as much as possible.

How to deal with diseases of mountain ash

Aronia is practically not subject to disease. However, occasionally, these plants still suffer from diseases that are characteristic of other fruit and berry plants.

Brown spot

This disease is especially dangerous for young and weak plants. In the initial stage, small brown spots appear on the leaves; a whitish bloom may form on the lower part of the leaf. If you start the disease, the leaves dry completely and fall off. If you find the symptoms of this disease on your plant, then it must be sprayed with a 1% solution of Bordeaux mixture. All fallen and damaged leaves must be promptly removed, collected and destroyed.

Septoria Spotting

This type of spotting is characterized by light brown oval spots with a dark border. It may appear in the middle of summer and leads to complete drying of the fabric inside the spots. As with other types of spots, for the prevention and at the first signs, Bordeaux liquid is treated, and all the damaged leaves are collected and destroyed. For the fight, drugs are also used; from these diseases of chokeberry, the bush and the soil under it is treated with copper oxychloride and Abiga-Pik.

Bacterial necrosis, or bark cancer

This disease can cause mass mortality of stone and pome crops. Aronia does not suffer from this disease as often as, for example, apricot, cherry, or peach. Symptoms are similar to the appearance of bacterial cancer on pome crops. In spring, they resemble burns, but this disease affects all the tissues and organs of the shrub, so the forms of manifestation may be different.

If the disease is transient, the fruits, shoots and flowers quickly dry and turn brown, but do not fall off, and hang on the tree for quite a long time. You will not see ulcers on the bark, but under the influence of toxins that emit bacteria, the bark becomes saturated with moisture, turns brown, then turns black and eventually dies. In this case, a characteristic sourish odor emanates from the bark, which resembles a fermented juice.

Treatment of such diseases of mountain ash, unfortunately, is impossible. If you find a disease in the initial stage, then pruning of all affected branches is carried out with the capture of healthy wood 8-10 cm below the lesion.

When processing it is necessary to disinfect the instrument with a 5% formalin solution, and it is necessary to lubricate the places of the cut with garden putty.If the disease struck the plant too much, then the bush must be completely uprooted and burned, avoiding new plantings near this place.

Viral ring mosaic

Symptoms of this disease are greenish-yellow rings on the leaves, which, when severely affected, merge and form a mosaic pattern. Over time, the leaves of mountain ash are deformed, become wrinkled, then turn black and fall off. To combat this disease, it is necessary to promptly remove the affected leaves and destroy them.

Comb

Fungal disease combing disease affects the root system. The causes of this disease are aronia rooted in root rot, which weakens the plant. It has the appearance of leathery thin brownish-gray plates. Prevention involves standard treatment with Bordeaux mortar in the spring and autumn, as well as copper oxychloride and Abigak-Pik.

Fruit Rot, or Moniliasis

This disease resembles apple fruit rot. Progresses at high humidity. If the weather is dry and warm, the damaged tissue will dry out and the destruction of the fetus will stop. But with increasing humidity, this process resumes.

Peripheral Wood Rot

Rowan can suffer from a disease such as peripheral rot of wood, which is caused by mushrooms. For the fight using Bordeaux liquid or other fungicide. Strongly affected bushes must be removed and burned, and with the roots.

Mealy dew

This fungal disease of chokeberry affects young leaves and shoots. Over time, a white cobweb-like bloom appears on them, and by the autumn they turn into brown spots - in this state the fungus overwinters. This disease can greatly weaken the plant, especially if the weather is warm and humid. To combat powdery mildew during the growing season, chokeberry must be pollinated with ground sulfur and lime (in a ratio of 2 to 1) at a rate of 0.3 g / sq. m. Also be sure to collect and burn fallen leaves.

Rust

Chokeberry sometimes suffers from a disease called rust. The causative agent of this disease causes the appearance of yellow spots on the leaves. All spots have dark brown dots - the fungus is located on the upper side of the leaves.In the future, the fungus develops on the juniper, so it makes sense to protect the planting of chokeberry from this plant. As a treatment for rust, the plant is sprayed with a solution of Bordeaux liquor, and the affected branches are completely removed.

How to deal with mountain ash pests

Aronia can also suffer from pests characteristic of other fruit crops. But the plant has good immunity, so you should not worry much about it. However, if there are many other fruit trees nearby, then it is worthwhile to carefully monitor your aronia in order to get rid of pests if necessary.

Hawthorn

The size of this diurnal butterfly can reach 7 cm. Its caterpillars damage the leaves of the plant. It occurs in the spring, at this time the pest begins its activity. During blooming buds, the caterpillars of the hawthorn eat them away, and then destroy the leaves and flowers. In the middle of summer, these pests lay eggs, most often on the upper side of the leaf.

Before blooming, aronia can be sprayed with various insecticides for prophylaxis, such as:

• Zolon;
• "Metathion";
• Nexion;
• "Dursban";
• "Gardona";
• "Antio".

Before budding, the trees can be sprayed with Olekupri, Nitrafen.

Weevil

On the chokeberry you can sometimes find leaf weevils that eat the leaves. To combat them, use karbofos (10 g per 10 liters of water) or Chlorophos (20-30 g per 10 liters of water).

Cherry slimy sawfly

This dangerous pest is able to nibble the entire leaf, leaving only large streaks. They appear massively at the end of July, parasitize on the plant for a month, and then go to the soil. The larvae are comma-shaped and covered with thick dark mucus.

To combat mucous sawfly use the following solution:

• Chlorofos or Karbofos solution;
• Entobacterin suspension solution;
• soda ash solution.

Spraying is carried out for the first time after flowering, and then 2 more times every subsequent week.

Green Apple Aphid

This pest infects the leaves and the tops of the shoots, causing them to curl and dry. These insects are small in size and are up to a maximum of 3.5 cm. Young saplings suffer most from green apple aphid. During the period of budding and before flowering, they are treated with insecticides to get rid of the larvae of the apple aphid. To combat aphids, it is necessary to spray the preparations of Nitrafen, Karbofos, Olekuprit, etc.

Brown fruit and red apple pincers

These pests of chokeberry appear during bud break. The larvae molt, leaving behind themselves larval skins on the bark of the branches. Because of this, the branches get a silver tide, so it is impossible to confuse this type of pest with others.

In spring Aronia should be sprayed with any of the acaricides ("Zolon", "Malathion", "Tedion", etc.). The use of various drugs is necessary, because with the constant use of only one of them, the tick is immune to it.In order to quickly reduce the population of ticks, it is imperative to dig up the soil under the plants, as well as regularly collect and destroy fallen leaves.

Bark beetle

This small dark-colored beetle gnaws at the bark, trying to get to the succulent wood. All stages of the vital activity of this beetle occur precisely after the plant has entered the bark. In advanced cases, the leaves of Aronia rowan turn yellow, due to the fact that nutrients do not come from the branches.

To combat this pest it is necessary to spray the entire plant completely: the trunk, branches and leaves. For processing using the following drugs:

• Aktara;
• "Confidor";
• Lepidocide.

Spraying is carried out after flowering, the procedure is repeated after 2 weeks.

Rowan and mining moths

These pests affect the fruits of chokeberry. The caterpillars begin to eat the flesh, gnawing through the narrow passages. From the resulting holes, droplets of juice protrude, then dark spots appear, and the taste is bitter. Aronia does not receive severe damage, but the affected fruits are not usable, therefore, with the appearance of this pest, the harvest decreases.To combat rowan and mining moths, it is necessary to dig up the soil under the trees, burn the collected leaves, clean the bark from lichens and growths.

Against the moth rowan fight with the help of spraying drugs against the apple stem. Against the apple miner moth, it is necessary to spray aronia with insecticides before flowering. However, it should be borne in mind that in most cases these drugs are effective only in the fight against young caterpillars.

Birds

Unfortunately, birds like to eat various berries, so if they notice your garden, you will have to fight them. The most effective method is the special grids from birds, there are, of course, other self-made methods, but their effectiveness is not guaranteed. As such tools use shiny objects (such as CD / DVD discs), which brightly reflect the sun and scare away birds when approaching the bushes. In addition, they use scarecrows to scare away birds, as well as objects that, when they come into contact with each other, make a sound (for example, aluminum cans connected to each other), but it is possible that it will not scare the birds away, and unpleasant sounds will annoy you.