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    Incorporating Beauveria bassiana Into an Integrated Pest Management Plan for Coffee Berry Borer in Hawaii


    Hollingsworth, Robert G and Aristizábal, Luis F. and Shriner, Suzanne and Mascarin, Gabriel M. and de Andrade Moral, Rafael and Arthurs, Steven Paul (2020) Incorporating Beauveria bassiana Into an Integrated Pest Management Plan for Coffee Berry Borer in Hawaii. Frontiers in Sustainable Food Systems, 4 (22). pp. 1-10. ISSN 2571-581X

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    Abstract

    Since its recent establishment in Hawaii, the coffee berry borer (CBB), Hypothenemus hampei (Coleoptera: Curculionidae), threatens yields, quality, and price of coffee production. A limited number of insecticides (primarily Beauveria bassiana) are used to control CBB with minimal disruption in this agroecosystem. We evaluated two insecticide spray strategies across eight coffee farms in the Kona and Ka‘u districts of Hawaii Island. Coffee growers sprayed insecticides approximately monthly (calendar basis) or else in response to CBB field monitoring data (threshold based). Overall, farms adopting spray thresholds performed more insecticide applications early in the season (May to July), but significantly fewer overall, when compared with calendar-based strategies (i.e., 4–5 vs. 7–11 seasonal sprays, respectively). Generalized linear models assessing the variability in CBB infestation rates, berry penetration, and infection by B. bassiana indicated that threshold-based sprays provided equivalent CBB control compared with calendar ones. When corrected for yield, there were economic savings for threshold- vs. calendar-based spray programs (i.e., cost 5.4 vs. 11.8% of gross yield). Total defects in processed coffee after harvest were statistically similar between the two spray regimes, i.e., 8.5 ± 1.0% and 10.4 ± 1.7%, respectively. We hypothesize that B. bassiana applied early in the season is more effective, since the fungus targets initial CBB infestations when the prolonged location of founder females in the outer berry endosperm favors its infection. Our study suggests that spray timing for CBB based on field monitoring data can reduce costs; however, additional measures, such as field and post-harvest sanitation, are necessary to achieve sustainable CBB control in the Islands.

    Item Type: Article
    Additional Information: Specialty section: This article was submitted to Crop Biology and Sustainability, a section of the journal Frontiers in Sustainable Food Systems Citation: Hollingsworth RG, Aristizábal LF, Shriner S, Mascarin GM, Moral RA and Arthurs SP (2020) Incorporating Beauveria bassiana Into an Integrated Pest Management Plan for Coffee Berry Borer in Hawaii. Front. Sustain. Food Syst. 4:22. doi: 10.3389/fsufs.2020.00022 SUPPLEMENTARY MATERIAL The Supplementary Material for this article can be found online at: https://www.frontiersin.org/articles/10.3389/fsufs. 2020.00022/full#supplementary-material
    Keywords: biological control; Hypothenemus hampei; mycoinsecticide; Coffea arabica; coffee farms;
    Academic Unit: Faculty of Science and Engineering > Mathematics and Statistics
    Item ID: 14604
    Identification Number: https://doi.org/10.3389/fsufs.2020.00022
    Depositing User: Rafael de Andrade Moral
    Date Deposited: 13 Jul 2021 15:12
    Journal or Publication Title: Frontiers in Sustainable Food Systems
    Publisher: Frontiers Media
    Refereed: Yes
    URI:

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