Why currant leaves turn yellow. Fighting, prevention

The article gives a detailed answer to the question of why currant leaves turn yellow, gives detailed recommendations for eliminating the problem, preventive measures.

In order not to lose the crop of currants when yellow leaves appear, on which the summer resident worked so anxiously, he immediately begins to treat currants. He will first carefully examine the plant to determine the cause of the yellowing. This can happen for various reasons: mistakes in care, diseases in the plant, or something else - in any case, the predisposition of this phenomenon is very carefully studied. High-quality, timely assistance is the guarantor of the preservation of the harvest and the plant itself.

Why currant leaves turn yellow

Why currant leaves turn yellow

Care errors are one of the main reasons a plant can become yellowed. In addition, this may be due to the action of insects harmful to the bush. However, the action of the fungus and viruses is the most dangerous cause of the yellowness of the leaves. In such a case, the currants need to be treated immediately.

Perennial shrubs can turn yellow both at the beginning of the summer period and at the end of fruiting:
1. In the spring, branches may dry out due to improper grooming, the shrub may lack nutrients. Young plants suffer from a lack of potassium and nitrogen elements.
2. A small amount of nutrients or lack of sufficient moisture in the soil is the reason why the bush can turn yellow in May.
3. In summer, due to heavy rains, nutrients can disappear from the trunk circle. Top dressing on time can solve the problem well.
4. Is June on the calendar, and the leaves of the currants have turned yellow? Probably the reason is that the pests have already launched an attack. Some types of insects harm bushes in the middle of summer, for example, gall aphids.

Currant leaves turn yellow: care errors and their elimination

Currant leaves turn yellow: care errors and their elimination

To find out the reason for the yellowing of the leaves, you need to revise all stages of caring for currants. It is worth starting with thinning, it is important to observe the necessary intervals between the bushes:

1. If the currant bushes are located too close to each other, then they may lack the light from the sun, which is so necessary for their development. In such a situation, you can thin out the planting, transplant some plants.
2. If there is a fruit plant in the neighborhood that may have similar diseases (for example, gooseberries), then this can harm the currants. When planting plants, a minimum interval of 1.5 meters must be observed.
3. It is not recommended to plant the seedling outdoors in the spring, because early planting can be detrimental. It is advisable to plant the plant in the autumn months, a month before frost.
4. Old currants, whose age has already passed 15 years, will turn yellow and give a small harvest due to a natural process - old age. Leaves may turn yellow due to excessive or insufficient moisture, lack of frequent feeding, diseases.

Watering errors

Currant bushes, especially black currant, are very susceptible to long droughts. If the weather is very hot without rain, it is worth watering the perennial plant with warm water, which has already settled.The soil must be soaked 40-60 centimeters.

It is important not to forget that you cannot overdo it, because excess moisture can also cause damage. The root system begins to rot if there is a constant excess of moisture, so few nutrients reach the top of the perennial. The recipe for treatment is very simple - just stop watering the bush before the soil dries out.

Unfertile soil

Nutrient-rich soil is a prerequisite for the growth of certain bush varieties. Because of this, an insufficient amount of nutrients can form yellowing of the leaves. To solve the problem, you need to fertilize the soil with an organic or mineral preparation when planting currants. Young leaves begin to fall off only in conditions of extreme starvation of the soil, so the situation can be easily corrected, it will not cause severe damage.

Deficiency or abundance of nutrients

Due to the lack of nitrogen in the soil, there may be elongated thin stems, the leaves begin to turn yellow with veins. Organic or nitrogen fertilizer will save the shrub.

If the leaves began to turn yellow from the edges, but they are still green by themselves, there is a potassium deficiency on the face. Fertilizers with potassium should be applied under the bush when the berries ripen. Examples of potassium preparations for solving the problem: potassium sulfate, potassium chloride.

Due to the lack of magnesium, the leaves of the lower part of the currant begin to turn yellow. In this case, the veins are green, and the leaf begins to turn yellow. Dolomite flour, wood ash, potassium magnesium or magnesium sulfate can help with this ailment.

It is important not to forget that with an excess of fertilizers, young currant bushes may turn yellow. This is especially true for peat, potassium and phosphorus.
30 grams per year is the rate of potassium for young currants, 40 grams is the rate of phosphorus.

Why currant leaves turn yellow: bush diseases and treatment methods

Why currant leaves turn yellow: bush diseases and treatment methods

Due to improper care, the plant may weaken, or diseases may begin to overwhelm it:

1. A sign of columnar rust infection is the appearance of small yellowish spots, accompanied by growths that have a yellow-orange tint. Fight fungal disease can help 1% Bordeaux liquid or fungicidal preparations. If columnar rust is found, it is necessary to process the currants several times. Spraying is carried out according to the following schedule: the first occurs when the foliage is blooming, the second when the buds appear, and the third after the currants have faded. If the disease is large, you need to carry out another spraying two weeks after the last one on the list. The yellow leaves must be removed and burned.

2. If a scattering of large yellowish pads is found on the leaves, then the plant is overcome by goblet rust. Those parts of the bush that are infected with the fungus must be cut off and burned immediately. To treat the plant, you can use Bordeaux liquid or Fitosporin. It is necessary to perform similar actions as with the help of a plant with columnar rust disease.

3. Anthracnose is a very fungal disease of red currants, due to which yellow-brown spots appear. The foliage then curls and falls off. If you start the disease, do not treat the currants, then the unripe crop will fall off, due to which the gardener will lose all the berries. Infected leaves must be cut off and burned, and the bush must be treated with a fungicide (Oxyhom, Strobi, Alirin B and others).

Leaves on currants turn yellow: what to do, how to deal with pests

Most often, insects are at the top and bottom of the leaves. Often they can be very easily detected, their effect on the bush can cause not only the yellowness of the leaves.

The most common insect pests for currants. How to deal with them

1. Because of the gall aphid at the top of the leaves, swellings are formed. They appear where there is an insect's proboscis piercing the leaf plate.The infected leaf turns red, and when the insect spreads, it turns yellow, dries up and dies off. This pest adversely affects the bush until mid-July, then it moves on to neighboring fruitful plants on the site. The laid eggs of aphids on the branches survive the winter, then larvae form in the spring. In case of infection, you need to treat the branches, spray both sides of the leaf with an insecticidal preparation (Aktara, Tanrek, Iskra).

2. The crown may turn yellow and dry out due to the spider mite. It absorbs nutrients from the leaves, thereby depleting the currant. Cobwebs can be found where there are many insects. It is possible to neutralize the tick at a very early stage; you need to water the foliage every few days. Soap, onion, garlic, tobacco infusions will help if the mites are large, dandelion infusion may also be useful. If this does not help, the currants can be treated with acaricides.

3. A pest such as sardine glass can be detected not so easily. In the event that the foliage turns yellow and begins to dry out along with the shoots, then you need to cut off the infected part of the branch and look there. If a black dot was found on the cut, then the currants are infected with this insect, because these dots are butterfly larvae. It can lay larvae on the bark with microdamages, and then harmful caterpillars grow from them.

If the plant is not treated, then the pest will gnaw the stem to the very ground. For the treatment of currants, you need to remove all infected parts, no drugs will help get rid of this insect. In order to prevent the glass from appearing at all, you need to loosen the soil around the bush well in summer and spring.

Treatment of bushes during treatment is carried out before budding and after the harvest has already been harvested or a month before harvesting.

Why currant leaves turn yellow and what to do: terms and rules for preventive work

In the fall, it is best to carry out prophylaxis for currants, because then the pests will not be able to lay off the larvae at all.

Prevention rules:

1. The yellowed foliage must be collected and burned.
2. After the leaves fall, you need to water the crown well, loosen the trunk circle, and do this carefully, so as not to harm the roots that are near the surface.
3. It is necessary to carry out sanitary and regulatory pruning. It is necessary to remove all parts that thicken the bush. It is also necessary to cut off infected or dried stems, after which the sections must be lubricated with garden varnish. This will help the plant, because the possibility of harmful microorganisms to penetrate into the stem will decrease.
4. In the autumn, additional treatment with insecticides is necessary if the currants have been infected with harmful insects. In the spring, it can be treated with fungicides - this will exclude the repeated possibility of infection of the branches with fungal diseases. Insecticide prophylaxis can be carried out in the fall before the buds open.
5. All courtship for currants must be done very carefully, otherwise the bark will be damaged, because of this, larvae can penetrate into the plant.

The plant can be treated with lightning speed or for a longer time. In any case, even the most extreme, it is possible to save the currants. Prevention is important. It is better to plant those varieties of fruitful perennials that are more resistant to infections and harmful insects. Following these recommendations, the gardener will not face problems.

Currant leaves turn yellow