Blue Heliotrope Biological Control

Summary

Identification of a suitable mechanism for controlling blue heliotrope remains a high priority among producers, as the weed continues to spread. The enthusiasm and support for the project among producers did not diminish despite the difficulties created by the fungus destroying the breeding colonies. Breeding the blue heliotrope beetles, hampered by recurrent fungal infections, was more difficult than anticipated and the support of an organization like DPI & F would be highly recommended for future projects. Reducing the chance of Beauvaria infection would be a priority. The beetles were found to fly more than expected. Releasing a larger number of beetles at fewer sites would have increased the opportunities for the beetles to build up effective colonies.