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Data from: Fungicide efficacy and duration of protection against coffee leaf rust (<i>Hemileia vastatrix</i>) on commercial coffee farms in Hawaii

Metadata Updated: June 5, 2025

These data are from a study that characterized fungicide efficacy and duration of protection against coffee leaf rust (CLR, Hemileia vastatrix) on Hawaii Island. Field trials were conducted on three commercial coffee farms in 2022 and five commercial farms in 2023. We included four commercially available fungicides approved for coffee in Hawaii in 2022, and six fungicides in 2023. The preventative fungicides (two copper-based, two Bacillus-based, and one botanical-based fungicide) were applied twice during the field trial, at week 0 and week 5. The translaminar fungicide was applied once (week 0) or twice (week 0 and week 6) in combination with a copper fungicide (week 3) during the field trial. Data was collected on CLR incidence (presence of infection) and leaf retention (leaves per branch) for 12 (2022) to 15 (2023) trees per treatment on a weekly (2022) or bi-weekly (2023) basis. The cost of application was also estimated based on labor (USD$/hour), gas and oil used for the sprayer, and product cost (USD$/pound or Fl oz) and rate (amount of product/acre). Our results suggest that conventional coffee farms can control CLR by alternating applications of translaminar and copper-based fungicides, aiming to apply a total of 4-6 sprays between flowering and harvest to reduce impacts on leaf retention and yield. Without the option to use translaminar fungicides, organic farms will need to aim for 5-8 sprays, alternating between copper and biological fungicides to control CLR.

Access & Use Information

Public: This dataset is intended for public access and use. License: Creative Commons CCZero

Downloads & Resources

Dates

Metadata Created Date April 21, 2025
Metadata Updated Date June 5, 2025
Data Update Frequency R/P1W

Metadata Source

Harvested from USDA JSON

Additional Metadata

Resource Type Dataset
Metadata Created Date April 21, 2025
Metadata Updated Date June 5, 2025
Publisher Agricultural Research Service
Maintainer
Identifier 10.15482/USDA.ADC/28518353.v1
Data Last Modified 2025-05-19
Public Access Level public
Data Update Frequency R/P1W
Bureau Code 005:18, 005:20
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id 4b710040-6664-4c4c-8e2c-767302ead614
Harvest Source Id d3fafa34-0cb9-48f1-ab1d-5b5fdc783806
Harvest Source Title USDA JSON
License https://creativecommons.org/publicdomain/zero/1.0/
Program Code 005:040
Source Datajson Identifier True
Source Hash db0437222c5b8e95649ba567e1d4205f7355231c07c56bf88cabc1138b21dc67
Source Schema Version 1.1
Temporal 2022-05-01/2023-08-31

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