Many gardeners often encounter such a problem as drying out of a raspberry bush. To fix the problem, you must first identify it, and then proceed with immediate treatment.
How do you know that raspberries have started to dry?
The phenomenon of drying out of the leaves and stems of raspberries is called death syndrome. Mostly young shoots are at risk. They are susceptible to cracking during active growth.
Signs of wilting bush:
- yellowing and curling of leaves;
- reduction in foliage size;
- enhanced stretching of the stems;
- deformation of the root system;
- lack of ovaries or partial drying of berries.
When planting seedlings, you should always pay attention to their condition. Healthy shoots are less susceptible to attack by parasites and diseases.
Causes and symptoms of drying raspberry bushes
There are several main reasons for drying raspberries - improper agrotechnical measures, non-observance of growing rules, the occurrence of various diseases or attack by pests.
Improper care
The raspberry bush grows rapidly, takes root, on which offspring and new shoots are formed. If you do not remove excess growth, do not thin out the plantings, raspberries turn yellow and dry out, since they lack neither the sun nor nutrients.
You can fix the problem as follows:
- Moisten the raspberries as the soil dries.
- Water early in the morning or in the evening (2-3 liters per bush). In the heat, moisture quickly evaporates, and the roots do not have time to absorb it.
- Mulch the beds, then moisture is retained longer in the soil.
During a severe drought, you can lose up to 80% of the crop.
Bad weather
Shoot death syndrome is commonly seen in hot weather. The stems and leaves begin to dry out from lack of water. Then the ovaries also remain without moisture and nutrition.
If the shrub is planted in a lowland, after prolonged rains and heavy showers, groundwater rises to the surface, which is fraught with rotting roots, wilting of shoots. In this case, it is worth resorting to the method of planting raspberries in high beds.
Increased acidity
The increased level of acidity of the soil in which plants grow has a negative effect on their growth and development. Acidic soil is the cause of various diseases and pests.
To understand the level of acidity in the soil, the ideal option would be to take the soil for chemical analysis. However, if this is not possible, it is worth using the litmus test strips. You need to act according to the instructions on the package.
To reduce the acidity of the soil, you must use:
- chalk - 0.5 kg per 1 sq. m;
- slaked lime - 0.4 kg per 1 sq. m;
- dolomite flour - 0.5 kg per 1 sq. m.
Liming is the reason for the loss of mobility of the compound of boron and manganese, therefore, in parallel with the laying of lime, it is recommended to add boron fertilizers to the soil.
Diseases
The main diseases that cause the drying of the raspberry bush and methods of dealing with them:
Name | Description | Prevention and treatment |
Root cancer | A bacterial disease that affects the root system of the bush. Its appearance can be provoked by:
Growths are formed on the roots, reaching up to 12 cm in diameter. They prevent the roots from absorbing moisture and nutrients from the soil. As a result, raspberries turn yellow and dry. | Elimination and burning of infected plants. You can not plant anything on this site for 2-4 years. |
Raspberry rust | The disease is incurable, it causes drying and curling of leaves, the death of the entire bush. | Disease control methods:
|
Chlorosis | The virus enters through breaks in the cortex. The tips of the leaves curl up. The main vectors are nematodes and ticks. Cold summer and shortage of:
In June, the infected bush changes color, leaves turn yellow at the edges, shoots become thin. | Raspberry chlorosis treatment:
|
Root cancer
Chlorosis of raspberries
Raspberry rust
Pests
Pests that contribute to the drying out of raspberries:
Name | Description | Control methods |
Spider mite | A cobweb appears on the underside of the leaves. Over time, they discolor, begin to dry and completely fall off. Most often, the pest infects raspberries during prolonged dry and hot weather. | Raspberries are processed:
|
Stem galitsa | An adult lays eggs in cracks in the bark of young branches. The waste products of the larvae are strong poisons that lead to the formation of tumor-like growths. The bark in this place cracks a lot. The branch, weakening, gradually dries up. | To prevent the appearance of larvae, preventive treatment is carried out in the spring. Fufanon has a good effect. The substance (15-20 ml) is dissolved in water (10 l). The resulting solution is used to process the earth. Previously, the soil is dug to a depth of 10-15 cm. |
Aphid | During the period of bud maturation, the first generation of larvae appears. With abundant infection, the branches dry out, the leaves curl up. Aphids form a sugary bloom on the leaves. | To combat insects, use a solution of actellik (15 ml per 10 liters of water). |
Raspberry beetle | The female pest lays up to 50 eggs per season. In June, gluttonous offspring spoil most of the crop. The berries dry at the very base and fall off. | In the fall, a vegetable garden is dug up to destroy the beetles that have decided to overwinter under the bush. In the summer, Guapsin is used. To prepare a working solution, 250 ml of the suspension is dissolved in 10 liters of water. |
Spider mite
Stem galitsa
Aphids on raspberries
Raspberry beetle
Root damage
Raspberry roots can be damaged in the following cases:
- from diseases;
- if improper loosening of the soil was made;
- when waterlogging the soil.
To prevent root damage, be very careful when loosening and weeding. To determine the disease of a shrub, you must carefully monitor its condition.
If the roots are damaged, plants cannot fully receive moisture from the ground. As a result, there is a deficiency of nutrients. With a strong deformation of the root system, new shoots stop growing. Old branches begin to dry out and die off.
How to save raspberries?
It happens that the berries are already starting to turn red, and the leaves curl and dry out, so as not to lose the harvest, you need to find out the problem and fix it.
Leaves dry and curl during fruiting
Aphids carry viruses that cause yellow mosaics. The disease may not appear 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.
Effective drugs:
- Inta-Vir. Spraying is carried out before and after flowering plants at the rate of 1 tablet per 10 liters of water.
- "Spark". The composition is diluted in a ratio of 5 ml per 5 l of water or a 10 ml bottle per bucket.
They use drugs to deal with insects that pathogenic microorganisms carry. The diseased leaves are cut off and burned.
Leaves turn yellow
Raspberry reacts negatively to micronutrient deficiencies, excess and lack of moisture. With the development of physiological chlorosis, the bushes are fed with fertilizers containing nitrogen, watered with diluted bird droppings.
Often raspberries turn yellow and dry from the heat. In dry and hot weather, you need to water the plants with warm water more often. When it rains frequently, irrigation must be abandoned.
Dry stems
At high temperatures, excess moisture and thickening of the plantings, anthracnose pathogens are activated. As a result, the shoots on raspberries become stained, the stems dry out. To prevent the onset of the disease:
- remove weeds regularly;
- weed plantings;
- in the spring, spray the raspberry with Bordeaux liquid;
- use a solution of "Alirin B" for processing plants (2 tablets per 1 liter of water).
It is useless to treat infected bushes, they need to be removed and burned, and the ground should be treated with copper oxychloride, fungicide "Oxyhom" (15 g per 10 liters of water).
The branches are drying
Berries on raspberries are formed only on annual shoots, old ones begin to dry out and die off. Regular pruning helps rejuvenate the shrub.
If the branches dry with a lack of moisture, water the raspberries abundantly. When the plant is damaged by insects, insecticide treatment is started.
The bush dries up along with the berries
So that the plant does not dry out during the fruiting period, it is necessary to follow agricultural techniques when planting:
- regularly feed and water the bushes;
- remove old shoots;
- thin out young growth.
How to protect raspberries?
Raspberry processing is effective only in spring. At this time, insect activity is still low. In this case, the air temperature should not be higher than +12 degrees. To protect against parasites, shoots are sprayed with 0.2% Chlorophos solution (20-30 g per 10 l of water). After 2 weeks, the procedure is repeated.
During the formation of ovaries, insecticides are used to treat the lower part of the stems:
- "Karate" (4 ml per 10 liters of water);
- "Confidor" (1 g per 10 liters of water).
Useful tips if raspberries are missing
To prevent the spread of most diseases in a raspberry garden, adherence to agricultural techniques for growing this crop and a number of preventive measures will help:
- In the fall, the site is cleared of last year's foliage, the soil is loosened under raspberries, fertilizers are applied and treated with Bordeaux liquid. With an increase in acidity, this indicator is brought to the standard by introducing gypsum into the soil.
- In the spring, plants are pruned, the soil is loosened, fertilizers are applied and the bushes are sprayed with Bordeaux liquid.
- During budding, budding and before flowering, raspberries can be treated with insecticidal and biofungicidal preparations.
- Repaired raspberries are sprayed with Topaz in early May (2 ml per 10 liters of water). At the end of May, they are treated against pests with "Aktofit" (4 ml per 1 liter of water) or "Lepidocid" (20-30 g per 10 liters of water).
With proper and timely care, you can get rid of such a problem as drying out of a raspberry bush. Preventing a disease is easier than treating its consequences. After all, serious raspberry infections, such as fungal infections, can completely destroy the shrub.