Why raspberries dry with berries and what to do: how to fight and how to process

All their free time summer residents feed, weed, water plants, loosen the ground and look forward to harvesting fruits and vegetables. Gardeners rejoice at the appearance of the ovary on the bushes, the formation of fruits, but after a while they notice that raspberries dry together with the berries, why this happens is immediately difficult to understand. By drying out foliage and fruits, the plant reacts to a lack of light or moisture, but if this is not the problem, it is even more difficult to determine the cause of the phenomenon.

In what season are raspberry bushes most prone to withering and drying out

Stem death syndrome is more common in mid-summer. Shoots and leaves begin to dry when berries have already set on the branches. Raspberries love the sun, but grow quickly, plantings thicken, it becomes more difficult for bushes to get nutrients, and some of them dry out, while others continue to develop.

The culture is demanding on nitrogen. If mineral fertilizers have not been applied to the ground since spring, by the summer the reserves of the substance decrease, the raspberries stop growing, begin to wither, the ovary crumbles. On sandy soil, nutrient s alts do not linger for a long time and are washed out with water.

Common causes and symptoms of drying raspberry bushes

Various natural factors contribute to the death of stems. The young shoot cracks when pest larvae enter. Berries can dry out if the plant is affected by a viral infection.

Bad weather

Raspberry leaves turn yellow in extreme heat when it lacks moisture. If the shrub is planted in a lowland, after prolonged rains and heavy rains, groundwater rises to the surface, which is fraught with rotting of the roots, withering of the shoots. Wet weather promotes the activation of fungi that cause various diseases.

Improper care

The shrub grows rapidly, takes root, on which offspring and new shoots are formed. If you do not remove excess shoots, do not thin out plantings, raspberries turn yellow and dry out, because they lack neither sun nor nutrients.

The bushes need to be watered properly, the soil must be moist, but the crop does not tolerate stagnant water. Branches dry, berries fall off due to a lack of nutrients if the plant is planted in depleted soil, and fertilizers are not applied.

Diseases

With improper care, combined with adverse weather conditions, raspberries become vulnerable to viral infection and are affected by curl and mosaic.

With excessive moisture and thickening of plantings, fungi multiply, which causes:

• anthracnose;
• gray rot;
• powdery mildew;
• ulcer spotting.

During the ripening period, raspberries dry up with verticillium. Although the disease occurs after a cool spring, the appearance of the first signs is associated with the onset of heat. The lower leaves of chokeberry varieties fade in June, then turn yellow throughout the bush and fade, purple stripes appear on the shoots.

Red raspberries are affected by a fungus that causes verticillium, a month later - in July. Symptoms of the disease are less pronounced than in chokeberry varieties, but the berries on the bushes ripen unevenly, become tasteless and often dry out.

Damp weather and high humidity cause rust. The leaves and stems of the shrub become covered with ulcers, turn yellow and dry. The yield with this disease drops by 30%. The mycelium of the fungus is sent to the tissues. Young people especially suffer from it. The shoots seem to begin to rust, break and dry out. Raspberries dry and die from stem and bacterial cancer.

The edges of the leaves curl, the ends dry out during fruiting when infected with a yellow mosaic. The disease makes itself felt in May and early August.

Chlorosis

A virus that multiplies in plant cells, is carried by aphids and mites, and causes a disease that is almost impossible to cure. In infected bushes, already in May, the leaves along the veins change color, then spots appear. The shoots of infected raspberries become thin, begin to dry out before they have time to ripen. Physiological chlorosis occurs in wet and cold weather, with a deficiency of trace elements in the form of:

• iron;
• boron;
• nitrogen;
• manganese.

Not all summer residents know what to do with drying bushes. Plants must be dug up and burned. Spring treatment of raspberries with Nitrafen, which kills insects that carry it, helps prevent the spread of infection. It is necessary to fight aphids, without waiting for flowering, the shrub is sprayed with a solution of methyl mercaptophos.

Anthracnose

If the air humidity reaches 90%, the temperature exceeds 22 ° C, the fungus Colletotrichum orbiculare is activated, which causes anthracnose. The causative agent is transmitted by insects, carried with an infected tool, seeds:

1. First, a brown spot appears on the leaf, it grows in size and spreads.
2. Stripes appear on young stems, dark purple rings form in their place.
3. Shoots crack in drought, rot in rain and wet weather.

If anthracnose develops during fruiting, the berries dry out. It is necessary to fight infection comprehensively. It is necessary to cut and burn infected shoots, dig up the ground under the bushes, and thin out the plantings. Not all summer residents know how to process raspberries to prevent anthracnose.

To prevent the activation of fungi, shrubs are sprayed with solutions of copper oxychloride or "Kuprozan" during the growth of shoots, in May and when flowering begins. It is not possible to cure a plant with folk remedies. Remontant raspberries are disease resistant.

Pests

Fruit bushes often attract parasites. Many of them suck the juice from the leaves, which, in the absence of urgent measures, ends not only with the yellowing of the plant, but also with its death. Raspberries bring great harm:

• nematodes;
• stalk flies;
• spider mite;
• glass case.

Microscopic aphids lay eggs, from which more than one colony of insects is formed, which, after drinking the juice, begin to feed on the stems of the plant.

Raspberry weevil eats green leaves, buds and flowers. Gall midge grows and multiplies in the cracks of young shoots. Orange insect larvae crawl into the ground for the winter, wake up in May and eat tender shoots.

Glassmaker loves wet weather, lays eggs in rainy summer. The offspring are not averse to eating green foliage.

Nematodes settle inside the raspberries, multiplying, damaging the bush, the fruits are deformed and dry out.

Stem fly larvae climb inside the shoots, and make moves in a spiral from top to bottom. The bush withers and leans towards the ground.

In heat and drought, raspberries are attacked by ticks. They wrap it in cobwebs, pierce the leaves with their proboscis to drink the juice.

Physical root damage

Above-ground shoots near the bush live only a year or 2, and then die off. Young shoots begin to dry not only from diseases, but also when the roots are damaged by the larvae of the cockchafer, with inaccurate loosening of the earth.

What to do: the scheme of rescue operations

It happens that the berries are already starting to turn red, and the leaves are curling and drying up, so as not to lose the crop, you need to find out the problem and, without delay, begin to eliminate it.

If the leaves turn yellow

Raspberries react negatively to micronutrient deficiencies, to excess and lack of moisture. With the development of physiological chlorosis, the bushes are fed with fertilizers containing nitrogen, watered with diluted bird droppings, but potassium s alt, manure and superphosphate are not added.Raspberries turn yellow and dry out from the heat; in dry and hot weather, you just need to water the plants more often with warm water. When it rains frequently, irrigation should be abandoned.

If the leaves dry and curl during fruiting

Aphids carry viruses that cause yellow mosaic. The disease may not manifest itself for a long time, but during the ripening of the berries, light spots appear, the tops of the leaves are twisted and deformed. To prevent the development of the disease, the bushes are treated with fungicides. Preparations "Inta-Vir", "Iskra" are used to cope with insects that carry pathogenic microorganisms. Sick leaves are cut off and burned.

If the stems dry

At high temperature, excessive humidity and thickening of plantings, anthracnose pathogens are activated. Shoots on raspberries become stained, the stems dry out. To prevent the onset of illness:

1. Regularly remove weeds.
2. Weeding plantings.
3. Spray the raspberries with Bordeaux liquid in the spring.
4. Prepare a solution of Alirin B, treat plants in the summer every decade.

It is useless to treat infected bushes, they need to be removed and burned, and the ground should be treated with copper oxychloride, fungicide "Oksih".

If raspberries dry up in the area along with berries

To prevent the plant from drying out during the fruiting period, it is necessary to observe agricultural practices when planting, regularly feed and water the bushes, remove old shoots, thin out young growth. Such methods help to strengthen the immune system. To protect against fungi and viral infection, raspberries are treated with Bordeaux liquid, Oxyhom or urea. If the plant dries up from the invasion of pests, insecticides "Aktellik", "Intavir" are used.It is better to dig up and burn the affected bushes.

If branches dry

Berries on raspberries are formed only on annual shoots, the old ones begin to dry out and die off. Regular pruning allows you to rejuvenate the bush. The branches dry with a lack of moisture. In this case, the raspberries are watered abundantly. If the plant is damaged by insects, proceed with insecticide treatment.

How to protect and cure raspberries from diseases and pests

To prevent the wilting of fruit shrubs during fruit ripening, you need to acquire strong, he althy planting material. Drying out or waterlogging of the earth, thickening of the site should not be allowed. Need timely:

• cut out infected and old shoots;
• dig up roots and burn untreatable bushes;
• feed plants with organic and mineral components.

For the winter, the trunk circle of raspberries is covered with needles or sawdust. To protect plants from spider mites, bushes are sprayed with urea in spring. The leaves may turn yellow if the shoots are affected by gall midges. They get rid of the pest by digging up the soil in spring and autumn, treating the area with bleach.

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