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Palm Treatments

Adult CRB stay inside host plants, like palms, while feeding but leave the plant to breed. They may return to the same plant or choose a different plant the next time they feed. Because CRB feed on different host plants throughout their life it is better to think of them infesting regions and not individual trees. It also takes months for signs of damage to emerge from the heart of a palm so damage on emerged visible foliage is not a good indication of the current levels of damage or number of beetles inside the plant. A plant showing damage could have no beetles inside and a plant with no external damage could have beetles feeding inside. This is why regional treatment is needed. 


Treatments to palms, CRB’s favored food, include pesticides and physical barriers. Physical treatments like netting can protect a single palm because they prevent some damage to the palm but pesticides should be applied to all palms in an area to be the most effective because they kill beetles during feeding and are only effective when the regional population is suppressed. While these treatments are great tools, it’s not a 100% protection against CRB. For trees to have the best chance at recovery, community-wide treatment and green waste management are important to have a significant impact on the beetle population in your area. Read more about how to organize community wide treatments here

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See below for more information about each treatment

Chemical Treatments

Chemical treatments for controlling CRB populations primarily focus on killing beetles that feed on trees. Pesticides can be applied as foliar sprays, systemic injections, or systemic soil drench. Systemic pesticides require beetles to feed on palms to be effective. Some damage may still occur, but reducing the local CRB population can significantly mitigate it. It's ideal for most palms in the area to undergo treatment to maximize effectiveness.

 We don’t endorse any specific products or suppliers and we expect similar formulations to have similar results. We mention products that are available in Hawaii that have been used by the CRB Response or our partners. We do this to facilitate your research to find a product that fits your needs but this is not a promotion or endorsement. 

TREES THAT HAVE BEEN TREATED WITH SYSTEMIC PESTICIDES (e.g. imidacloprid or acephate) NEED REGULAR TRIMMING OF FLOWERS TO PROTECT POLLINATORS AND THE FRUIT CANNOT BE CONSUMED UNTIL THE PRE-HARVEST INTERVAL OR REAPPLICATION INTERVAL HAS PASSED. 

 

ALWAYS REFER TO THE PRODUCT LABEL WHEN APPLYING PESTICIDES. Misuse of pesticides is not only illegal but can be harmful to the environment and human health.

Physical Treatments

Businesses that offer treatments coming soon!

If you are a business that offers treatment for CRB please reach out to us. If your treatments aligns with our recommendations we will add you to our list. 

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