Brown spotting of strawberries: treatment with chemical and folk remedies

The content of the article

The cause of brown spotting in strawberries is a fungal disease, its causative agent is the fungus Marssonina potentillae. It damages all the aerial parts of the plant, slows down the photosynthesis of stems, leaves and flowers. The initial stage is manifested by small dark dots that can grow and form large spots of dark red color.

Strawberry Brown Spotting Fungicides

Effective treatments should combine preventative measures and the use of therapeutic remedies. Only an integrated approach will help eradicate fungal disease.

You can use folk remedies or mowing leaves at the initial stage of infection. Fundamental measures – the use of fungicides in the following stages of development:

  1. During the spring regrowth of the leaf mass.
  2. At the budding stage.
  3. After picking fruit.

Medications can be of 2 types:

  • Contact exposure – destroy the fungus on the surface. The fungicide quickly disintegrates, has a relatively sparing effect on strawberries. Acceptable treatment during fruiting. For example, Coside, Chorus, Fitosporin.
  • Systemic action – able to penetrate into strawberries, the active substance breaks up for a very long time. It can be processed only 4 weeks before flowering and after the fruiting period. For example, Oksikhom, Ridomil.


Mode of application



Foliar top dressing: 10 g of product per 10 l of water.

200 g of powder from 18 to 50 rubles


Allowed processing during the growing season with an interval of 9 days. Aqueous solution: 20 g of substance per 10 l.

10 g from 37 to 50 rubles


It goes well with other drugs. Divorced: 5 ml per 10 l.

Package 6 ml – 70 r., 1 l of the drug – from 4500 r.

Abiga Peak

Spraying. 50g / 10 liters.

50 ml from 48 to 70 r.

The order

Double spring treatment with an interval of 7 days. Solution: 25 g of powder in 5 l of water.

25 g from 30 to 65 rubles


Spraying with a solution: 2-3 ml per 10 l.

Ampoule 2 ml – from 35 to 60 rubles


Straw fungicides that destroy brown spotting are made from copper. The use of drugs and the preparation of the solution should be carried out in strict accordance with the instructions. Any processing stops 3-4 weeks before the harvest. The fight against the disease is carried out by the following medications:


Cooking method

Mode of application

Bordeaux liquid

  1. Copper sulfate (0.1 kg) is dissolved in 0.5 l of hot water, cold water is added to a volume of 5 l.
  2. Quicklime (0.15 kg) diluted in 5 l of cold water.
  3. Liquid vitriol is carefully poured into milk of lime.

Before budding, a 1% solution is used. After harvesting 3%. Consumption rate: 1 liter per 10 square meters. square meters.

Blue vitriol

Aqueous solution: 50 grams per 10 liters.

Spraying morning or evening.


40 g of the product are dissolved in 10 l of water.

For a season no more than 3 treatments. Last spray 3 weeks before picking berries.

Blue vitriol

Folk methods

Treatment of brown spotting of strawberries with folk remedies is environmentally friendly for soil and humans. Often used affordable components that do not require large cash investments.

They are designed to disinfect soil and treat strawberry bushes. Methods are used repeatedly, do not harm plants throughout the growing season. The most common among them:

  • Iodine. It disinfects well. It inhibits the development of strawberry disease. An aqueous solution conduct root dressing, spraying. Frequency: 1 time in 10 days.
  1. Watering in early spring: three drops of iodine per 10 liters .
  2. Autumn watering: 15 drops of iodine per 10 l .
  3. Spraying: 10 drops of iodine + 1 liter of milk + 9 liters of water.


  • Wood ash. It contains phosphorus, calcium, and other useful components. Protects against fungal infections, pests.
  1. Sifted ash is scattered around each bush in spring and autumn, after foliage.
  2. Spray with an ash solution not more than once a week. For the preparation of a solution of 1 tbsp. ashes poured with 1 liter of boiling water and insist 24 hours. The concentrate is poured into 9 liters of water and treated strawberry bushes.

Wood ash

  • Potassium permanganate. It is effective in case of brown spotting, it is safe to use, it has proven itself among gardeners. When manganese enters the plant, it improves metabolism, photosynthesis, carbohydrate and nitrogen metabolism. Strawberry Sugar Increases.
  1. Spring root treatment is carried out with a solution: 10 grams of the substance are dissolved in 10 liters of water. Consumption rate: 2 liters per bush.
  2. Spraying with a solution: 1 teaspoon of potassium permanganate dissolved in a bucket of water.

Potassium permanganate

  • Infusion of onions / garlic. Onion husks contain volatile, destroying the mycelium of the fungus. Onion infusion is an excellent prevention of brown spotting and treatment at the initial stage of the disease. Solution preparation:
  1. One glass of husk pour a liter of boiling water. Infused for 48 hours and diluted with water in a ratio of 1 to 2.
  2. You can water under the root or spray the aerial part.

Garlic has similar properties for the destruction of the mycelium of the fungus. To prepare the infusion, cloves, husks, shredded arrows and leaves are used:

  1. 100 grams of raw material is poured with a liter of boiling water, infused for 5 days.
  2. Ready infusion is used to spray strawberries or watering under the root.

Infusion of Onion Husk

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