Coffee Leaf Rust (Hemileia vastatrix) 
Confirmed to be found on Oahu, Maui, Lanai, Kauai, Molokai and Hawaii Island.

Proper Pesticide Use is of Extreme Importance to Prevent Pesticide Resistance by Coffee Leaf Rust and Other Coffee Diseases
Published 11/4/20; Updated 1/6/21, 6/18/21, 10/29/21, 4/25/22
The following publication provides important information for Hawaii coffee growers, about the proper methods of spraying to suppress coffee leaf rust (CLR) while preventing pesticide resistance by rust and other diseases on farms. The article includes:
  • ​List of fungicides currently licensed by the Hawaii Department of Agriculture with directions for use on coffee grown in Hawaii.
  • ​Some symptoms of CLR
  • Why spray to suppress CLR
  • Proper spray techniques and coverage
  • How to properly rotate the use of pesticide products
  • Spraying anthracnose, cercospora, and CLR
  • Following product label directions
  • Minimum and maximum rates per application and per year or season
  • Other considerations such as spreader/sticker and other additions to a fungicide solution

Click here to download the English version.
Click here to download the Spanish version.
Click here to download the Tagalog version.
Click here to download the Ilocano version.
​Learn How to Calibrate your Handheld Sprayer and Calculate Pesticide Rates per Gallon of Water and Per Tankful
Published 11/10/21; updated 4/28/22
This "Sprayer Calibration with Handheld Sprayer Systems for Orchard Crops" publication includes information on:
  • ​Why calibrate a sprayer?
  • Examples of when to calibrate your sprayer
  • What to do before calibrating your handheld sprayer
  • How to calibrate your handheld sprayer for orchard crops
  • Preparing and applying the pesticide spray solution 
  • Calculating the amount of product per gallon and per tankful
  • Mixing and spraying pesticides​
  • Unit conversions, a field sheet for hand calculations and an example of calibration, pesticide calculations, mixing, and application is included.​ ​
Sprayer Calibration Excel Workbook - Windows 97-04 version, Windows/Mac version
CLR Pesticide Subsidy Program
Published 4/25/22
Aloha Coffee Farmers,

The HDOA CBB-CLR Pesticide Subsidy is now OPEN for reimbursement of Coffee Leaf Rust fungicide receipts in addition to BotaniGard/Mycotrol receipts. 

We are currently reimbursing receipts from 7/1/20 - 6/30/21. Coffee Leaf Rust (CLR) fungicide sprays must be on the HDOA-approved list. We reimburse 50% of the pre-tax cost of the pesticides. There is a cap of $600 per acre per year for EACH CBB & CLR pesticides, and a cap of $6,000 total for EACH CBB & CLR pesticides per farm. 

For new applicants several additional documents are required to get started (a Driver’s License or State Issued ID, your State of Hawaii General Excise Tax ID and Social Security number or Federal Tax ID, and your land lease if your name is not listed on the TMK).

Please start here to fill out the application online and upload your receipts. Farmers may alternately print the pdf and email it with their receipts to hdoa.cbb@hawaii.gov. If farmers prefer a paper application mailed to them, please call 808-323-7578. 

Click here to download the Annual Application form.
Click here to view the HDOA approved products for CBB & CLR. ProBlad Verde has also been included in the subsidy.
Melanie Bondera
HDOA.CBB@hawaii.gov
Hawaii Department of Agriculture
CBB Subsidy Program Coordinator
Phone: 808-323-7578
Mailing Address: 
P.O. Box 226
Captain Cook, HI 96704
Physical Address:
82-6130 Mamalahoa Hwy, Room # 7
Captain Cook, HI 96704
ProBlad Verde Information
Published 4/20/22
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ProBlad Verde is another fungicide product approved for CLR control in Hawaii. This product can be incorporated into a spray program and spray rotation to prevent pesticide resistance.

HDOA approved a 24(c) Special Local Need Label for an organic biofungicide, ProBlad Verde. This product has also been included on the HDOA CBB/CLR pesticide subsidy list.​​ProBlad Verde fungicide works on contact, leaf tissue absorption, and has translaminar properties. It is driven by multiple-site modes of action to control fungal diseases within eight hours of contact. Priaxor Xemium is another product that has translaminar properties. Translaminar fungicides move into the sprayed leaf and a reservoir of fungicide (active ingredient) is held within the leaf for a limited amount of time (typically up to a few weeks). Contact fungicides do not provide this extended period of protection.
Priaxor Xemium Information
Published 5/19/21
Priaxor® Xemium Brand Fungicide by BASF is a translaminar fungicide approved for use on coffee in Hawaii by the US Environmental Protection Agency (EPA) under a Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) Section 18 Emergency Exemption. 

Producers using Priaxor® Xemium on coffee in Hawaii will need to follow all Section 18 and specimen label directions and instructions. It is a violation of federal law to use this product, or any pesticide, in a manner inconsistent with its labeling. The label is the law.
​Learn more about use of this product ​here.
Coffee Leaf Rust Trifold Brochure
Published 2/17/21
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Page 1
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Page 2
Pruning Methods for the Management of Coffee Leaf Rust and Coffee Berry Borer in Hawaii
Published 2/10/21
The following publication provides information for Hawaii coffee growers about pruning methods for the management of coffee leaf rust (CLR) and coffee berry borer (CBB). This article includes:
  • Reasons for pruning
  • ​Needs prior to pruning (strip-picking, spraying, etc.)
  • Pruning styles for CLR and CBB control
  • Disposal of plant materials infected by CLR and CBB
  • Examples of various common pruning systems used in Hawaii
Coffee Leaf Rust Poster
Published 1/20/21, revised 2/5/21
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Front of poster. Click to download.
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Back of poster. Click to download.
Surveying, Sampling, and Monitoring of Coffee Leaf Rust is Essential for Early Disease Control in Hawaii
Published 12/20/20
Approved contact fungicides can be used to control Coffee Leaf Rust (CLR), but these have little to no effect on advanced stages of CLR leaf infection. So, the timing of the applications and coverage are extremely important. If CLR is allowed to continue uncontrolled or is improperly addressed, an increase in spore population in the farm is expected, and leaves will be lost. Yields in the first season with CLR infection are frequently not affected; however, due to diminished tree health and vegetative growth, coffee production in subsequent years will be severely reduced and tree death can occur. Hence, active surveying, sampling, and monitoring for presence of this disease on farms is critical for early detection, maximizing fungicide applications, and reducing CLR impact on farm productivity and profitability. 
​
The photos below, show EARLY SYMPTOMS of CLR - pale yellow spots with little to no visible spores; no brown, necrotic center. Your goal is to be able to locate and identify CLR as early as possible and then spray with approved fungicides to control CLR below 5% incidence.

Click here for the most recent publication titled "Surveying, Sampling, and Monitoring of Coffee Leaf Rust (Hemileia vastatrix) for Early Disease Control in Hawaii".
Coffee Leaf Rust Field Guide and Submission Form
Click ​here​​ to download the complete field guide and submission form.
January 2021 - Coffee Leaf Rust New Pest Advisory (5 pages)
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Click the photo to download the advisory.
July 20, 2021
HDOA Release Re: Coffee Leaf Rust Confirmed on Kauai and Molokai
March 16, 2021
HDOA Release Re: EPA Exemption Requested to Help Hawaii Coffee Farmers Manage Coffee Leaf Rust
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Click the photo to download the release.
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Click the photo to download the release.
February 3, 2021
Governor Ige's Signed Emergency Declaration Due to Coffee Leaf Rust
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Click any of the photos above to download the declaration.
Coffee Leaf Rust Photo Slideshow
November 10, 2020
HDOA Release Re: Coffee Leaf Rust Confirmed on Hawaii Island 
October 30, 2020
HDOA Release Re: Coffee Leaf Rust Confirmed on Maui and Tentatively Found on Hawaii Island
October 29, 2020
HDOA Memo Re: Coffee Leaf Rust Tentatively Identified on Hawaii Island
October 26, 2020
HDOA Release Re: Coffee Leaf Rust Tentatively Found on Maui
October 23, 2020 
HDOA Memo Re:  Coffee Leaf Rust Suspected on Maui
If a new plant pest or disease is suspected, what do I do?
  • Contact and report your find immediately to the Hawaii Department of Agriculture by calling their toll-free pest hotline at 808-643-PEST (7378) or by contacting your nearest UH CTAHR Cooperative Extension office (also listed below). Listen carefully to their instructions. Their instructions may supersede any of the instructions below.
    • ​Big Island - Kona - 808-322-4892;  Hilo - 808-969-8201;  Kamuela - 808-887-6183 
    • Maui - Kahului - 808-244-3242 x222
    • Molokai - Hoolehua - 808-567-6929 
    • Oahu - Honolulu - 808-956-7290;  Pearl City - 808-453-6050;  Wahiawa - 808-622-4185 
    • Kauai - Lihue - 808-274-3471 
  • DO NOT touch the diseased plant parts and DO NOT collect samples of this fungal pathogen or damaged plant parts to prevent potential spread.
  • If possible to do without touching the diseased plant parts, take clear photos and/or video and share them with HDOA and the Cooperative Extension agent.
  • Flag or visibly mark the area where the pest was found and communicate the find with all farm employees and administrators.
  • Keep people and pets away from the area and DO NOT allow movement of soil, plant materials or supplies from the location that the disease was found.
  • If you have touched or contaminated your clothing, footwear, hat, etc. with the fungal pathogen or think you may have, shower immediately with soap and water and wash your clothing, footwear, hat, etc. in laundry detergent and dry with high heat. Once decontaminated, then travel from your farm or location.
  • Provide HDOA and the Cooperative Extension agent with information such as your name and contact, the exact location and address of find, and type of host material where found. Personal information will not be shared with the general public.​
​​Preventing new pest and disease introductions to Hawaii
Comply with all HDOA and USDA quarantine regulations. Quarantine restrictions have been placed on unroasted coffee, coffee seeds, plants and other propagative materials, used coffee materials and supplies, etc.
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