Contact fungicides are effective for protecting vegetable plants from leaf diseases because they act externally, killing fungal spores on contact before they can penetrate the plant tissue. When you spray a contact fungicide on vegetables like tomatoes, beans, or cucumbers, it coats stems, leaves, and fruit surfaces, forming a protective barrier against pathogens that cause mildew, leaf spots, or blight.
visit: https://gramiti.com/collections/fungicides
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