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Coffee Berry Borer Quarantine Expands to the Island of Maui

Photo by the Hawaii Department of Agriculture, courtesy of Berkeley Lab.

The Hawaii Board of Agriculture yesterday expanded the coffee berry borer (CBB) quarantine to the island of Maui, effective May 1, 2017. The quarantine, which has been in effect on Hawaii Island and Oahu, restricts the interisland movement of coffee and other CBB hosts and requires treatment and other quarantine protocols. Although recent detections of CBB were located in Hana and Kipahulu, the board decided that an island-wide quarantine was necessary to prevent the further spread of CBB in the state.

One of the most devastating coffee pests, CBB was first detected in the state in September 2010 in Kona and discovered in Ka`u in May 2011. In December 2014, it was discovered on Oahu and in December 2016 was found on Maui. So far, CBB has not been detected on Kauai, Molokai and Lanai.

This small beetle bores into the coffee “cherry” to lay its eggs. The larvae feed on the coffee bean, reducing the yield and quality of the bean. Since its detection in Kona, Big Island coffee growers have developed methods to manage the pest, which include using an organic pesticide and field sanitation. Some farms with good management practices have been able to keep infestations down to about 20 percent of the coffee crop.

CBB is native to Central Africa and is also found in many coffee-growing regions of the world, including Central and South America.  It is still unknown how CBB made its way to Hawaii Island and how it arrived on Oahu and Maui. Hawaii has strict importation rules that require fumigation of all imported green coffee beans to rid the beans of pathogens and insect pests. Coffee plants and plant parts are also restricted from being imported to Hawaii under Plant Quarantine rules.

In addition, HDOA issued a quarantine order that requires a permit from HDOA to transport unroasted coffee beans, coffee plants and plant parts, used coffee bags and coffee harvesting equipment from Hawaii Island to other islands that are not infested with the coffee berry borer.  The rules also require certain treatments and inspection by HDOA Plant Quarantine inspectors prior to shipping. Inspectors will either attach a tag, label or stamp to indicate the shipment passed inspection requirements. For unroasted coffee beans, acceptable treatment protocols include fumigation, freezing and heat treatment.

To view the Notice of Designation of Island of Maui as Expanded Coffee Berry Borer Infested Area Subject to Quarantine, go to: https://hdoa.hawaii.gov/pi/files/2013/01/CBB-Quarantine-Maui.pdf

For more information on CBB in Hawaii go to the HDOA CBB webpage at: http://hdoa.hawaii.gov/pi/ppc/cbbinfo/ and the UH-CTAHR webpage at: http://www.ctahr.hawaii.edu/site/CBB.aspx

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