In almost every household plot, you can find lush green bushes, strewn with multi-colored beads - currant berries. But all this splendor is easily destroyed by parasitic fungi: goblet and columnar rust.
Goblet
Occurs in May-June. Orange spots appear on the underside of the leaf, which gradually turn into red growths (shaped like small glasses). The upper side of the leaf turns yellow, the plate is deformed, the shoots dry up. The berries are covered with a white bloom (not edible).
Columnar
Occurs in the summer-autumn period. Outside, the leaf is covered with light yellow spots in the form of a mosaic. On the inside, the plate is strewn with small yellow specks (freckles) which gradually degenerate into brown papillary growths. Rust affects ovaries, branches, trunk.
Causes of the disease
Favorite habitat columnar rust are conifers
(including juniper). For development goblet rust sedge and marsh plants are needed. Spores of the fungus are carried by the wind, insect pests (spider mites, aphids, currant gall midge). The parasitic fungus winters well in fallen leaves. High humidity is a contributing factor for the onset of the disease.Fungus spores flying in the wind can make a person sick.
Treatment and control measures
In the absence of timely medical assistance, currant bushes die within several years.
- All the affected parts of the plant are removed, the sections are treated with garden pitch. Dug up the trunk circles.
- The bushes are sprayed with medicinal solutions. The plant and the surrounding soil are cultivated. The work is not carried out during active sun.
- folk remedies: a solution of laundry soap with soda, onion and garlic infusion, manure, tobacco solution, lactic acid products with iodine. Pros: harmless to humans and animals. Cons: ineffective, easily washed off by rain, duration of action 5-7 days.
- biologics: Glyokladin, Trichoderma Veride, Baktofit, Fitosporin-M, Sporobacterin. Pros: effective, harmless to humans and animals, increase immunity and stimulate plant growth. Cons: they affect a limited number of diseases, work must be carried out a day before the rain, the duration of action is 1-2 weeks.
- chemical agents: "Previkur", "Skor", "Topaz", copper sulfate, Bordeaux mixture. Pros: they destroy the causative agent of the disease very quickly, are not washed off by rain, are effective in the advanced course of the disease, the duration of action is 2-3 weeks. Cons: harmful (poisonous) for humans and animals, pollute the environment.
Medicinal solutions are prepared strictly following the attached instructions.
Prophylaxis
- Cleaning of fallen leaves, digging of near-trunk circles, timely weeding.
- Before flowering, currant bushes are poured with boiling water and sprayed with copper sulfate.
- Carry out preventive treatment of the bushes after prolonged rainfall. In autumn, process currant branches with Karbofos solution.
- Potassium-phosphorus fertilizers are applied.
- Do not plant bushes in lowlands and swamps.
- Cultivate rust resistant varieties.
By protecting currant bushes from rust, you can get a reliable helper of immunity in winter.
Read also: How to properly prune strawberries after harvest
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