Spring currant treatment for diseases and pests
Currant is a real garden treasure, because its berries, leaves, flowers and roots are equally useful. She is the undisputed leader in vitamins and minerals. But in order for currant to really please the whole year, you need to take care of it in early spring! We tell you what to do so that the bushes do not hurt and they are not attacked by pests!
Most often, currants are affected by various fungal diseases that can be caused by improper care or bacteria. Anthracnose affects leaves, leaving brown chaotic spots on them. Gradually, they completely cover the plates, and they simply die.
Another fungal disease for a characteristic appearance is popularly called - rust. Red spots appear on the leaves, slightly swollen upon closer examination. Less common is white spotting or septoria, which is manifested by whitish spots.
Ascochitosis is a fungus more characteristic of redcurrant. With such a lesion, brown spots in the center of the leaf also become slightly folded. But cercosporosis similar to it affects red, black and white varieties. In the midst of brown spots, bright means appear, and then they turn into a two-sided plaque.
A small library or powdery mildew in a short time can destroy the entire bush of currants and spread to neighboring ones. It manifests itself in a white, gradually darkening plaque on leaf plates. Terry - a dangerous viral disease, due to which the leaves are deformed and wither, the smell disappears and the crop disappears.
How to treat currants in the spring from diseases?
Before processing the currants, cut off from the bush all diseased and damaged branches, frozen shoots and diseased buds. Be sure to clean the old leaves around, sprinkle ash on the soil and rumble. So you will immediately get rid of favorable conditions for the fungus and parasites safely wintering around the bush.
Boiling water for fungus
The easiest way to start and combine it with others is boiling water. Immediately after winter, the scalp bush, and the heat will destroy all bacteria and disinfect everything around. At the same time, boiling water will kill pests that have wintered among the branches and their larvae.
Processing of currant with ash from fungus
Dilute 100 g of wood ash in a bucket of water and use this solution to prevent any fungal diseases of the currant. Its advantage is that it is very delicate and environmentally friendly, so ash can be used even if the leaves have already formed. Repeat spraying 3-4 evenings in a row.
Powdery mildew treatment with foundationazole
Dilute 15 ml of foundationazole or 100 g of copper sulfate in a 10-liter bucket of water. With this solution, you need to process not only the bush, but also water all the beds of currant. Copper or sulfur chloride contact fungicides are well suited.
Powdery Mildew Soap
At the initial stage of the disease, very delicate measures will be sufficient. Prepare a solution of soda ash and laundry soap for spraying currants. For a bucket of warm water, you will need 50 g of both ingredients.
Anthracnose currant treatment
The best way to fight against anthracnosis before the first leaves appear is int-vir. Before flowering, Bordeaux liquid or a concentrated solution of iron sulfate in a proportion of 300 g per bucket is suitable. Spray the bush twice in one evening with an interval of half an hour.
Bordeaux rust treatment
Bordeaux fluid is best for rust and spotting. Its concentration depends on what stage of the growing season is the currant bush. Before budding, use a 3% solution, and after - 1%. Pay attention to propiconazole systemic fungicides.
Common currant pests
The most dangerous “named” currant pest is a currant tick that infects the kidneys. Because of it, the bush ceases to develop, and you can’t even dream of a good harvest. He also spreads a dangerous viral disease - terry.
Blackcurrant often suffers from glass-moth butterflies with transparent, thin wings. They eat the kidneys at the very base and destroy the shoots. The caterpillars of this butterfly hibernate right in the core of the branches - this is clearly seen in the context.
Currant moth caterpillars completely eat away the entire contents of the kidneys. They are very nimble and even more gluttonous, and to notice damage visually is almost impossible.
On the underside of leaf blades, yellow aphids safely take root, which sucks out all the juices from the leaves. The gooseberry sawfly larvae quickly and actively eat leaves, so that they can leave the bush completely naked.
How to treat currants in the spring from pests?
To treat currants from pests, contact and systemic drugs are used. They differ in that the former create a kind of film on the leaves. The second act quickly, during the first hours. Be sure to follow the timing of spraying, because currants develop literally every day.
Tick treatment with furanone
Spray the bush and the fields around it with furanone, chlorophos, or other phosphonic acid derivatives. Fine colloidal sulfur in a proportion of 100 g per bucket of water. The same effect has malathion on malathion - 20 g per bucket of water. It is important to treat the currant before the buds begin to swell, otherwise it will be extremely difficult to remove the tick.
Tick boiling water treatment
Another way to get rid of a currant tick is to treat the bushes with boiling water. This is the simplest and most environmentally friendly, but quite effective method. It is necessary to scalp currants at the very beginning of spring, while the buds are not yet swollen.
Aphid currant treatment
If you managed to find aphids in early spring before the buds began to bloom - urgently treat the currant with furanone or any of its derivatives. If the leaves have already appeared, use Bordeaux liquid, malathion or copper sulfate.
Butter infusion treatment
In a bucket of warm water add 200 g of tobacco and ash, and then let the mixture settle for a day. Filter the solution well and discard debris so as not to clog the sprayer. We recommend treating currants with this mixture three times a week.
Processing of garlic from caterpillars
To get rid of caterpillars and other pests in early spring, prepare a strong infusion of garlic. Steaming 100 g of cloves with a liter of water, leave for a day and strain. Add another 4 liters of water and 20 g of laundry soap to the infusion. This is enough to spray about a dozen medium-sized currant bushes.
Processing onion husks from caterpillars
This method is similar to the previous one, but instead of garlic infusion you will need an onion husk infusion. A 10-liter bucket of water will take about a kilogram. Pour boiling water onions and husks, let stand for 6 hours, strain and treat them with currants every other day.
How to properly process: tips
Remember that even home-made methods can be dangerous for plants, not to mention chemical insecticides and fungicides. Therefore, when processing currants from diseases and pests, it is fundamentally important to follow the rules, dosages and safety precautions.
1. Use room temperature water to prepare the spray solution. Filter it in advance, or at least let it settle to avoid unexpected chemical reactions. For some drugs, hot water is needed - then it is indicated on the package;
2. Any solution (homemade or from store powder) first strain through a filter. It is important that the sprayer is not clogged and the product is distributed evenly;
3. If you use chemicals, be sure to wear protective equipment, glasses, gloves and a respirator;
4. Treat currant bushes after spring pruning so as not to waste the drug. At the same time, fungicide treatment will additionally protect the places of fresh slices;
5. Do not spray the currant in sunny weather, because the preparations dry quickly and do not have time to act. In addition, on a hot day, sunburn may appear on the leaves;
6. Treat the currants early in the morning, immediately after the dew has dried. Or wait until late in the evening when the sun is completely hidden;
7. Do not spray the currants immediately after rain, because no solution is kept on wet bushes. Even if it does not drain, its concentration will decrease, and with it efficiency will decrease;
8. Do not use any insecticides for spraying if the currant has already bloomed. But it is possible to treat from diseases;
9. If it suddenly rains after processing, the procedure will have to be repeated when the weather stabilizes and the currant dries.