Phytophthora manifests itself as dark spots on leaves, stems and fruits, as well as rot and softness of tissue.
Phytophthora spreads through air, water and soil and can overwinter in a greenhouse if 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 your greenhouse against late blight - copper sulfate.
Copper sulfate is a blue-green crystalline powder that has antifungal and bactericidal properties.
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 gardening store or pharmacy.
To treat a greenhouse against late blight, you will need:
• copper sulfate - 100 g;
• water - 10 l;
• bucket;
• brush or spray.
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 spray. When working with copper sulfate, wear rubber gloves and safety glasses to avoid damaging your skin and eyes.
• Leave the greenhouse for 24 hours to allow the solution to dry and form a protective film.
• Rinse the greenhouse with clean water and dry it.
• Sprinkle chalk or lime on the soil in the greenhouse to neutralize acidity and improve 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.
