Late blight manifests itself in the form of dark spots on leaves, stems and fruits, as well as in the form of rot and softness of tissues. .
Late blight spreads through the air, water and soil, and can overwinter in a greenhouse if it is not treated in time..
How can we get rid of late blight and prevent it from appearing next year?
There is one simple and effective remedy that will help you treat a greenhouse from late blight – copper sulfate.
Copper sulfate is a blue-green crystalline powder that has antifungal and bactericidal effects.
Copper sulfate destroys spores of late blight and other pests, and also disinfects the soil and surfaces of the greenhouse. Copper sulfate can be purchased at a garden store or pharmacy.
To treat a greenhouse from late blight, you will need:
• copper sulfate – 100 g;
• water – 10 l;
• bucket;
• brush or sprayer.
Follow these steps:
• Dissolve copper sulfate in water, stirring until completely dissolved.
• Clear the greenhouse of plants, weeds, debris, and soil. Wash the greenhouse with water and detergent and dry it.
• Apply the copper sulfate solution to all surfaces of the greenhouse: walls, ceiling, floor, frames, doors, and windows. You can use a brush or sprayer. When working with copper sulfate, wear rubber gloves and safety glasses to avoid damage to your skin and eyes.
• Leave the greenhouse for a day to allow the solution to dry and form a protective film.
• Rinse the greenhouse with clean water and dry it.
• Sprinkle the soil in the greenhouse with chalk or lime to neutralize acidity and improve the structure.
Repeat this procedure once a year, at the end of the season or early spring, and your greenhouse will be clean and safe from late blight and other diseases.
