Powdery mildew

Powdery mildew

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Question: Can I mix a fungicide with vinyl glue?

In the use of fungicides against powdery mildew it is advisable to dilute them with a glue, like vinavil, to prevent the saving of rain or watering? How often do the operations need to be repeated? If so in what amount of adhesive? Thank you for a timely response. Yours sincerely. Enrico

Oidium: Answer: the fungicides

Dear Enrico,
the mixture of vinyl glue with water and fungicides would be very harmful for the plants, since the thin layer of glue would modify the correct gas exchange between the leaf blade and the air, preventing the plant from its correct development; in addition to this, however, during a summer storm, the glue would be washed away with water, and therefore the suffering of the plant is completely rendered vain.
The most used fungicides against hatred are usually sulfur-based, in the form of wettable dust or dust; such products work as prevention, but let's say by contact, or sulfur powder prevents the fungus spores from attacking the leaf lamina cells, but their action occurs when they hit the leaf.
If you want a prolonged treatment over time, you can think of using a systemic fungicide, which means that it is absorbed by the leaves of the plant, and therefore remains active for long periods of time.
sulfur products usually work very well against sulfur dioxide (which are also permitted in organic farming, as sulfur is not very toxic to animals and humans), because this fungal disease develops with particular climatic conditions, such as strong environmental humidity, combined with cool night temperatures; so if you ask any grower for grapes or roses (plants typically affected by powdery mildew or other similar mushrooms), they will tell you that they use sulfur, especially in particular climatic conditions, in order to prevent the spread of powdery mildew.
Unfortunately, however, sulfur does not work if the fungus is already developed, so if your plants are already covered with the typical thin white patina, you will have to use another product to eradicate it.