Isomate GRB-Z has been approved for emergency use in NC this week (approved registration attached), meaning the product will be available soon in your area. The main points of distribution are Helena and Nutrien Ag providers located in Hendersonville, NC. The product may be distributed to other locations on request.
Section 18 Emergency Use Approved for ISOMATE GRB-Z in 2026
If you plan on using Isomate GRB-Z this season, contact your Agricultural supplier ASAP to have it available in your area!
Grape root borer remains an important pest of muscadine and bunch grapes in North Carolina, where larval feeding on roots and crowns can reduce vine vigor, productivity, and long-term vineyard health.
Growers are encouraged to consider the use of Isomate GRB-Z mating disruption dispensers as part of an integrated management program to reduce grape root borer mating activity and population buildup. This pheromone-based approach can help support sustainable vineyard pest management while reducing reliance on broad-spectrum insecticide applications.