Currant diseases: descriptions with photos and methods of treatment
It is impossible to overestimate the benefits of currants for the body. But even such a priceless berry for immunity suffers from its own infections. Although they are much smaller than other garden crops. In any case, it is important to recognize currant diseases as early as possible, so we have prepared descriptions with photos. And at the same time, we share the main methods of treatment!
This is one of the most common problems and a real scourge of all garden crops. Due to its widespread prevalence, it is almost impossible to avoid anthracnose, and it reaches its peak on rainy days at the height of summer. On the leaves of the currant there appear small brownish brown spots, which gradually grow and spread throughout the plate.
Anthracnose spores hibernate safely in fallen leaves, so all residues must be collected and destroyed on time. If earlier a diseased plant died on the site, a few more years should not be planted in its place. For treatment, use Bordeaux fluid after the first symptoms, and again after harvest.
Kidney ticks carry the disease, and most often it affects precisely blackcurrant. Infection causes irreversible mutations, due to which leaves and flowers change shape and appearance. As a result, the bush does not bear fruit and does not even have a characteristic expressive aroma of currant.
Infected plants are not treated, but removed as soon as possible so that the disease does not spread further. For prevention, plant only healthy seedlings, do not abuse nitrogen in excess of what is needed, and introduce immunomodulating phosphorus or potassium fertilizing. After harvesting, spray the bushes with phosphoric preparations such as Karbofors.
3. Powdery mildew
Another common fungus affects most fruit and berry crops. First of all, it destroys young leaves, which are covered with a loose whitish coating. But there is an advantage - the fight against powdery mildew is quite easy and effective.
Be sure to adhere to the regime of irrigation and fertilizer, and follow the care in general. For treatment, spray the currant bushes with Fitosporin, a weak solution of copper sulfate or ordinary pharmacy iodine at the rate of a bottle per bucket of water. Repeat the procedure several times with an interval of 4 days.
4. Nectric drying
This fungus mainly affects white and red currants. Because of it, young branches are covered with orange bumpy dots, which grow rapidly, and then darken. Very young shoots dry and wither, and in the future the bush may die completely.
For prevention, be sure to follow the watering and dressing regimen. Clean dry leaves and weeds, thin out bushes, avoid excess moisture. At the first symptoms, completely cut out all damaged branches, treat the sections with Bordeaux liquid and cover with garden var.
Currant is affected by several types of rust, due to which bumpy red spots or small red spots form on the leaves. In fact, the species differ among themselves only by the carrier - needles or sedge.
Therefore, avoid such neighborhoods, and use Fitosporin for treatment. If the lesion is already significant or Fitosporin did not work, perform 3-4 sprayings with Bordeaux fluid at intervals of one and a half weeks.
6. Striped mosaic
If the leaves of the currant began to turn yellow with uneven spots at the height of the season - this is a sure symptom of the mosaic. Most often, yellowness diverges from the veins and leaves a complex chaotic pattern. It is impossible to cure the disease, so the affected bush needs to be dug up, destroyed and treated with potassium permanganate as soon as possible.
This is another fungal spotting, in which white spots with a brown border appear on the leaves of currant. They gradually grow and can spread to other shrubs. Especially - on cloudy wet days or with too dense landing.
To prevent the disease, keep a distance between the bushes, dig the aisles and regularly thin out the branches. For treatment, remove all damaged areas and treat the bush with Bordeaux fluid. Use specialized drugs, such as Alirin-B, with a soapy solution. Up to 5 such treatments may be needed at weekly intervals.