Ср, 06 июл 2016 Автор: Елена Рыжкова
Without proper care and prevention, this plant is very fast.
catches viruses of all kinds, which are also transferred
insects on healthy plants.
I will open a simple secret: you can not keep currants in thickened
condition. Pruning, digging and timely fertilizer – the main
gardener’s assistants.
If your favorite bush is still sick, then you need to put
diagnosis and start treatment.
Contents
Mealy dew
This disease is caused by a fungus that forms a whitish plaque.
on leaves, berries and shoots. First light gray, patina
gradually getting dark. Most problems due to powdery mildew
occurs in young, actively developing bushes.
Hitting a plant, the fungus sucks out useful substances from it,
whereupon the bush dries up. Wintering transfers in the same place, in
own fruit formations that are very difficult to notice:
dark points on the shoots merge with the bark. Spreads on
other plants disputes, so it is important to quickly take action,
until the disease hit the rest of the bushes.
Blackcurrant disease and treatment are often associated with
fertilizer. So, powdery mildew can develop due to excess nitrogen.
in the soil. In the process of treatment you need to correct the balance of fertilizers,
so there is no relapse.
Most diseases are treated by spraying. All is subject to processing
bush, including the lower part of the leaves. For the procedure, choose dry,
windless evening. You can use any fungicides and folk
facilities. Among the most effective recipes are
following:
• soda solution – 10 l of water and 50 g of soda ash; by this
the composition is sprayed with currant immediately after flowering;
• 1 kg sifted wood ash poured a bucket of water, add
laundry soap (so that the mixture adheres better to the plant) and
insist a few days. Before spraying infusion
filter;
• before the buds have dissolved, a solution can be applied
copper sulfate – 80 g of product per 10 liters of water.
Be sure to do the prevention of the disease: trim the bushes, clean
and burn fallen leaves in which pests can hibernate. In
if the climate is favorable for the development of fungal
diseases, it is desirable to change the varieties of currants for more
resistant to powdery mildew.
Fight against diseases of black currant: anthracnose
Anthracnose, or flyworm – another fungus that suffers
currant bush. Its rapid development contributes to wet
climate. First, small dark dots appear on the leaves,
which increase with the progression of the disease.
Brown spots, caused by anthracnose, affect the leaves and fruits,
deform them and weaken the plant. Basically, the fungus settles on
green, did not have time to tree shoots. Dried up dried up
term leaves leads to metabolic disorders, and this, in its
turn, significantly reduces the winter resistance of currants. Good
preventive measure is timely destruction
infected leaves: Anthracnose spores overwinter on fallen leaves.
Among the fungicides that do well with fly traps,
appear drugs:
• “Fitosporin”;
• “Previkur”;
• “Acrobat”;
• “Ridomil.”
Each of them is applied in accordance with the instructions.
Rust on black currant: disease and treatment
Orange growths on leaves and stalks are rust. For her
development of sufficiently abundant watering in spring. If in
close to the currant bush is a reservoir
or swamp, then the plant must either be transplanted away, or dried
catchment area: it is on the sedge that the scabrous rust spores live and
multiply.
Pillar or glass rust covers with bright spots and
fruits, and the green part of the currant; infected sites quickly
perish and showered.
Both types of fungus are treated the same.
fungicides:
• “Topaz”;
• “Previkur”;
• “Fitosporin-M”.
These drugs inhibit the development of the fungus, preventing the spores from ripening.
and spread the next crop on the rest of the plants. Besides,
you can spray a bush with 1% Bordeaux liquid three times:
disclosure of buds, before and after flowering.
Disease prevention will be transplanted to the hill, drainage
terrain, removal of nearby sedge thickets, or use
resistant varieties: “Titanic”, “Blackeston”, “Alta”, etc.
Columnar rust is transferred not from sedge, but from coniferous
trees, so the best measure of control will be a frequent inspection of the plant
and timely detection of the disease. The treatment is carried out similarly to
glass rust.
Gray spots on the leaves: septoria
If the currant is seen areas of unnatural gray color with
clear brown border, then the bush is struck by white spot, otherwise
– septoria.
In the second stage of the development of the disease, the bush is covered with tiny
spherical growths waiting for new seedlings
dispute. If you allow them to develop and spread, then currants
start losing berries and leaves. Mandatory prevention will be collected
and burning of fallen leaves, as the causative agent is on it diseases
going through the cold season.
Treatment of septoria is carried out with the same fungicides as in
case with anthracnose. From folk remedies well helps
spraying a solution of copper sulphate: 40 g per 10 l of water.
Устойчивость к diseases повышают подкармливанием растения
fertilizers containing trace elements.
Вирусы: как вести борьбу с by thisи болезнями черной
currants
Если diseases поддаются лечению, то вирусы, переносимые
pests are not treated. If you find symptoms of infection
the virus needs to make sure that it is present and destroy
plant. The most common are two viral
diseases: terry and striped mosaic.
Terry is detrimental to currant bushes. Otherwise, the virus
called reversion – currants cease to bear fruit, degenerates.
The disease tolerates the kidney mite, therefore, for the prevention of
The virus must definitely get rid of the pest.
Determination of the terry is possible only during
flowering:
• dark, thick elongated leaves, on which there are three
cloves (on a healthy leaf there are five of them), with coarse veins; characteristic
аромат currants отсутствует;
• narrow, elongated petals on flowers of unnatural color (from
purple and dirty gray to green); late bloom, and
inflorescences do not give the ovary and crumble.
What to do to not lose currant
plantations:
1. Do not take new cuttings from the bushes on which in the last 2-3
year was a virus.
2. Annual inspection of all plants, so as not to miss the beginning
infection. The trouble is that the terry may develop over the years, and
spread by pests like aphids or kidney mites to others
plants, along with the juice of an infected shrub. Therefore pests
need to destroy in a timely manner.
3. Emphasis on potash phosphate fertilizers and foliar dressing
(manganese, boron). Nitrogen can trigger a virus.
4. Noticed the terry – remove the bush. Not escape, not two, but all
plant. For the next 5 years, plant currants at this place.
can not.
Exactly the same tools are suitable for dealing with striped
mosaic. It looks like a bright yellow or orange pattern on
leaf veined.
Do not let the health of the plant take its course, so as not to infect
rest. Especially it concerns cases with viruses: you will regret one
куст — рискуете заразить все rest.
