In today’s table grape industry, where quality standards, sustainability goals, and export requirements continue to tighten, pest control must be precise, safe, and gentle on the fruit. One of the most significant threats to this crop is the grapevine moth (Lobesia botrana), whose larvae directly damage the berries and create entry points for secondary infections like gray mold, ultimately reducing yield and compromising fruit quality.

In this context, Belthirul—a biological solution developed by Probelte using the proprietary PB-54 strain of Bacillus thuringiensis var. kurstaki—offers an effective and sustainable alternative that meets the technical, agronomic, and commercial needs of the sector.

Targeted Mode of Action with High Specificity

Belthirul works by releasing CRY and VIP protoxins during the fermentation of the PB-54 strain. Once ingested by Lobesia botrana larvae, these protoxins activate in the insect’s alkaline gut, binding to specific receptors on the intestinal lining. This process creates pores that cause digestive paralysis and ultimately lead to larval death within hours.

Thanks to this targeted mode of action, Belthirul is safe for beneficial organisms and fits seamlessly into Integrated Pest Management (IPM) programs.

Advanced Formulation for Field Performance

What sets Belthirul apart from other Bacillus thuringiensis products is its optimized formulation:

• UV protectants are included to extend the field persistence of active toxins, minimizing the need for repeated applications.
• Palatability enhancers improve larval ingestion of the product, accelerating its insecticidal effect.

These features ensure high control levels even under challenging environmental conditions—crucial during key stages of table grape development.

Residue-Free, Pre-Harvest Safe, Fully Compatible

Belthirul leaves no residue on fruit or soil and requires no pre-harvest interval, making it ideal for table grapes where traceability, zero residues, and export certification (e.g., Global G.A.P., organic production) are essential.

Its profile also ensures full compatibility with other biological and cultural control strategies, helping prevent resistance and facilitating integration into sustainable production systems.

Conclusion

Belthirul represents a next-generation biological control tool for managing Lobesia botrana in table grapes. Its combination of proven efficacy, biological precision, advanced formulation, and zero-residue profile positions it as a key solution for growers seeking high-quality, safe, and sustainable pest management.