Grapefruit seed extract

Grapefruit seed extract (Citrus paradisi seed extract) is a natural botanical substance recognized in agriculture as a potent biofungicide and bactericide. Its composition, rich in polyphenols and flavonoids, provides a synergistic effect that targets a variety of plant pathogens while maintaining environmental safety.

The primary role of this active ingredient in plant protection is the control of fungal and bacterial infections in field, greenhouse, and ornamental crops. It serves as an essential tool for growers seeking to reduce reliance on synthetic chemical pesticides, particularly within organic and sustainable farming frameworks.

The mechanism of action involves disrupting the permeability of microbial cell membranes. By interfering with the enzymatic pathways of pathogens, the extract effectively prevents the colonization of plant tissues, inhibits mycelial growth, and stops the release of infective spores during favorable environmental conditions.

The extract is utilized against a variety of pathogens across different crops, with proven efficacy against:

• powdery mildew on various vegetables;
• gray mold (Botrytis) on strawberries and grapes;
• bacterial leaf spots;
• soil-borne damping-off fungi in seedlings.

Proper application requires attention to concentration levels, as excessive dosages may be phytotoxic to sensitive tissues. When applying, ensure thorough coverage of the plant surface, especially the undersides of leaves where most fungal infections originate. Regular monitoring of crop response is advised to optimize treatment timing and minimize risk.