Ampelomyces quisqualis strain AQ10

Ampelomyces quisqualis strain AQ10 is a specialized biological fungicide based on a hyperparasitic fungus that occurs naturally in many environments. This microbial active substance is specifically used for the biocontrol of various powdery mildew species, serving as a sustainable alternative to conventional synthetic chemical treatments.

The mechanism of action of this agent is unique: it acts as a mycoparasite. Upon contact with the host fungus (powdery mildew), the spores of AQ10 germinate and penetrate the hyphae, conidiophores, and cleistothecia of the pathogen. Once inside, the fungus consumes the host’s cytoplasm, effectively killing the powdery mildew colony and preventing the formation of new spores.

This biological control agent is registered for use on a variety of crops, including grapevines, vegetable crops (such as cucumbers, tomatoes, and peppers), berries, and various ornamental plants. It is particularly valued in greenhouse production and organic farming where minimizing chemical residues is a priority for market standards and environmental safety.

Application guidelines emphasize that AQ10 is most effective when applied preventively or at the very onset of disease symptoms. Since it relies on biological activity, growers must ensure adequate coverage of the leaf surface. Furthermore, environmental conditions, specifically humidity and temperature, play a crucial role in the successful establishment of the fungus on the target pathogen.

Regarding safety and compatibility, the product is non-toxic to humans, mammals, and beneficial insects, including bees. However, care must be taken when planning spray schedules; it is advised to avoid tank mixing with fungicides that are toxic to Ampelomyces, as this would neutralize the biological efficacy of the treatment. Always follow local agricultural guidelines for optimal application timing.