Chitosan is a natural plant defense stimulator of natural origin that comes from the shell of crustaceans. Can be used in organic farming. Chitosan is an excellent elicitor that stimulates the natural defense mechanisms of plants by making them more resistant and vigorous. Chitosan is effective and versatile in combating fungal diseases: powdery mildew, downy mildew, etc. as well as bacterial diseases. It is used as a preventative treatment or as soon as the first symptoms appear. For more resistant and vigorous vegetable and fruit crops. How to use the chitosan defense stimulator? It can be used in all seasons from the appearance of the first leaves to the fruits (except during frost periods). It is recommended to avoid applying in direct sunlight or in high heat. Carefully treat all vegetation by wetting both sides of the leaves well. - Measure the quantity of product required (see the dosages below),- Dilute with a little water in the sprayer then complete the volume of water by mixing. - Wait 30 minutes then mix again.- The preparation must be applied within a maximum of 24 hours. Graduated dosing cup included in the box: 5gUse the defense stimulator for vegetables 1 g/L = 5 g for 5 L or 1 dosing cup for 5 L of water - treated surface: 5 L for 125 m2. Use the defense stimulator for small fruits and berries 2 g/L = 10 g for 5 L or 2 dosing cups for 5 L of water - treated surface: 5 L for 125 m2. Use the defense stimulator for aromatic herbs 1 g/L = 5 g for 5 L or 1 dosing cup for 5 L of water - 5 L for 125 m2. Apply every two weeks, 4 to 8 times maximum per year.