Article
Agronomy
Luis F. Aristizabal, Melissa A. Johnson
Summary: Coffee leaf rust (CLR) is a highly damaging disease for the coffee industry globally. In Hawaii, CLR was first detected in 2020 and rapidly spread across the state. A monitoring program was initiated in Kona, West Hawaii Island, to track the spread of this invasive disease across different elevations. The study provides insights into CLR patterns and suggests improved fungicide coverage and timing are necessary to control the disease effectively.
Review
Entomology
Luis F. Aristizabal, Melissa A. Johnson, Yobana A. Marino, Paul Bayman, Mark G. Wright
Summary: This review discusses the efforts made in Hawaii and Puerto Rico to develop an integrated pest management (IPM) program for coffee berry borer (CBB). Although the benefits of monitoring CBB activity have been proven, few growers in either region utilize traps or 30-tree sampling to inform their spray decisions. In Puerto Rico, farmers face a combination of factors, including other pests, diseases, and recurring hurricane damage, that prevent them from effectively managing CBB.
Article
Agriculture, Multidisciplinary
Elizabeth Haruna Kazama, Rouverson Pereira da Silva, Tiago de Oliveira Tavares, Ligia Negri Correa, Francisca Nivanda de Lima Estevam, Francisca Edcarla de Araujo Nicolau, Walter Maldonado Junior
Summary: The study compared the effects of selective harvesting and one-time total harvesting, and found that it was not possible to only harvest ripe fruits regardless of the management zone. The tested harvester settings did not change the amount of fruits harvested, and higher operational speed was recommended for economic reasons.
PRECISION AGRICULTURE
(2021)
Article
Agriculture, Multidisciplinary
Gabriela M. Garcia, Colin M. Orians
Summary: Like many perennial crops, coffee exhibits alternate bearing, a pattern of reproduction in which high-yielding years are followed by low-yielding ones. This study explores the underlying mechanisms of alternate bearing in coffee and the potential for farm management to mitigate it using the resource budget model. The results show that high fruit load affects multiple reproductive traits in coffee plants. While moderate shade and increased fertilizer levels improve reproductive traits, their impact on mitigating the reproductive tradeoffs of alternate bearing is limited.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2022)
Article
Agriculture, Multidisciplinary
Sara Guiti Prado, Jaime A. Collazo, Mariam H. Marand, Rebecca E. Irwin
Summary: Tropical agroforestry systems provide a sustainable alternative to traditional agriculture, and studying coffee as a focal crop reveals the significant impact of microclimate and nectar traits on pollinator visitation.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2021)
Article
Plant Sciences
Luciana Harumi Shigueoka, Ines Cristina de Batista Fonseca, Gustavo Hiroshi Sera, Tumoru Sera, Santino Aleandro da Silva, Orazilia Franca Dorigo, Andressa Cristina Zamboni Machado
Summary: The aim of this study was to characterize Meloidogyne paranaensis populations collected from infested coffee crops. The characterization involved morphological analysis, biochemical analysis, sequencing of DNA regions, reproductive fitness, and virulence characterization in coffee genotypes. The results showed variation between populations in morphology, biochemical profiles, and virulence. Resistance genes in coffee genotypes were found to affect the virulence of the populations.
Review
Agronomy
Athina Koutouleas, David B. Collinge, Eric Boa
Summary: This article highlights past and present events regarding coffee leaf rust, including its historical spread, recent epidemic hypotheses, management options, and its relationship with climate change. Understanding past events related to CLR can help better prepare for future outbreaks.
Article
Entomology
Andrea Kawabata, Roxana Myers, Matthew Miyahira, Nicholas Yamauchi, Stuart T. Nakamoto
Summary: Coffee berry borer (CBB), a destructive insect pest of coffee worldwide, has been introduced to Hawaii coffee farms. The insecticide spinetoram has shown potential in controlling CBB infestation and reducing damage to coffee beans.
Article
Food Science & Technology
Claudimara da Silva Portela, Isabela Fernanda de Almeida, Tamiris Aparecida Diniz dos Reis, Bruna Raquel Boger Hickmann, Marta de Toledo Benassi
Summary: The study assessed the dominant sensory attributes and preference for cold brews made with Arabica and Robusta coffees under different brewing conditions. While coffee flavor and bitter taste were dominant sensory attributes, the compositions differed among the cold brews. Arabica cold brews had more sourness and coffee flavor, while Robusta cold brews had more bitterness and astringent sensation.
FOOD RESEARCH INTERNATIONAL
(2022)
Article
Agriculture, Multidisciplinary
Renato Aurelio Severino de Menezes Freitas, George Deroco Martins, Gleice Aparecida Assis, Ana Carolina Silva Siquieroli, Marco Iony dos Santos Fernandes, Maria Olivia Queiroz Silva Soares, Bruno Eduardo Caetano Campos da Silva Pinheiro
Summary: Spectral characterization of coffee cultivars after pruning can predict their various phytotechnical behaviors. This study aimed to differentiate coffee genotypes based on leaf reflectance and develop models to estimate agronomic parameters of vegetative growth. The study included eight coffee cultivars, quantified biochemical and leaf structure parameters, applied vegetation indices, and generated models to estimate agronomic parameters after pruning.
PRECISION AGRICULTURE
(2023)
Article
Agronomy
Zerihun Misgana, Weyessa Garedew, Yibekal Alemayehu, Zelalem Bekeko, Amsalu Nebiyu
Summary: This study aimed to assess the determinants of Arabica coffee yield and farmers' preferences for shade tree species in the Jimma zone of southwestern Ethiopia. The results indicated that socioeconomic and biophysical factors such as gender, education level, family size, coffee-growing experience, coffee farm size, weed management practices, disease, and insect pests were found to be determinants of coffee yield. Farmers in the region prefer coffee shade trees with long heights, wider crown shapes, and evergreen leaves throughout the growing season.
AGROFORESTRY SYSTEMS
(2023)
Article
Plant Sciences
Patricia Carvalho da Silva, Walter Quadros Ribeiro Junior, Maria Lucrecia Gerosa Ramos, Omar Cruz Rocha, Adriano Delly Veiga, Nathalia Henriques Silva, Lemerson de Oliveira Brasileiro, Charles Cardoso Santana, Guilherme Filgueiras Soares, Juaci Vitoria Malaquias, Christina Cleo Vinson
Summary: This study evaluated the responses of arabica coffee genotypes in the Brazilian Cerrado region to different levels and durations of water deficit. The results showed that plants under full irrigation conditions had higher gas exchange and relative water content, while rainfed and water deficit treatments led to reduced physiological and productive potential.
Article
Agriculture, Multidisciplinary
Lucas Eduardo de Oliveira Aparecido, Joao A. Lorencone, Pedro A. Lorencone, Glauco de Souza Rolim, Kamila C. de Meneses, Jose R. da Silva Cabral de Moraes, Guilherme B. Torsoni
Summary: The study developed a model to estimate foliation of Arabica coffee based on climate and historical foliation data, showing high accuracy and precision in predicting foliation levels. Results indicated that locations with higher air temperatures tended to have lower foliation percentages, and foliation could be accurately estimated through degree days based on air temperature.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2022)
Article
Food Science & Technology
Alexandre Cestari
Summary: Coffee is the second most consumed beverage globally, with Brazil being the largest producer. Arabica and Robusta are the main coffee species, with Arabica having superior sensorial characteristics. A rapid method using Infrared Spectroscopy was proposed to identify Arabica and blended coffee with high accuracy. This method can be applied to ensure quality control and detect fraud in coffee products.
JOURNAL OF FOOD SCIENCE AND TECHNOLOGY-MYSORE
(2021)
Article
Chemistry, Applied
Jeongeun Kwon, Hyunwoo Ahn, Kwang-Geun Lee
Summary: This study investigated the correlations of alpha-dicarbonyl compounds (alpha-DCs) in coffee prepared under various roasting and brewing methods. Factors such as roasting temperature, time, particle size, water quality, and brewing method were found to influence the levels of alpha-DCs in coffee. The roasting temperature and time showed strong negative correlations with the levels of alpha-DCs, with higher temperatures and longer times resulting in lower levels of these compounds.
Article
Agriculture, Dairy & Animal Science
Corie M. Owen, Melissa A. Johnson, Katherine A. Rhodes-Long, Diana J. Gumber, Moises Barcelo-Fimbres, Joy L. Altermatt, Lino Fernando Campos-Chillon
Summary: Using a combination of metabolic regulators in culture media can improve the development and cryotolerance of in vitro produced embryos. The use of Synthetic oviductal fluid for Conventional Freezing 1 (SCF1) culture media and an optimized slow freezing technique results in improved pregnancy rates for frozen IVP embryos compared to embryos cultured in a synthetic oviductal fluid media.
JOURNAL OF ANIMAL SCIENCE
(2022)
Article
Entomology
Sheina B. Sim, Keena M. Curbelo, Nicholas C. Manoukis, Dong H. Cha
Summary: Insect responses to chemical attractants are often measured using olfactory bioassays. This study compares the effectiveness of three common bioassay methods (Y-tube, small-cage arena, and rotating carousel field-cage) for measuring the attraction of Bactrocera dorsalis to methyl eugenol (ME). The results show that the rotating carousel field-cage and small-cage arena methods are effective at observing attraction to ME and detecting a significant reduction in ME response from ME-exposed males, while the Y-tube method is not suitable for this purpose.
JOURNAL OF ECONOMIC ENTOMOLOGY
(2022)
Article
Entomology
Todd E. Shelly, Nicholas C. Manoukis
Summary: The oriental fruit fly, Bactrocera dorsalis, is a global pest that infests various fruits and vegetables. This study investigated the mating competitiveness of males from a genetic sexing strain of B. dorsalis, and found that the mating success of these males increased with the overflooding ratio. Additionally, the presence of females had an impact on the relative mating success of the males.
JOURNAL OF ECONOMIC ENTOMOLOGY
(2022)
Article
Entomology
G. A. Desurmont, M. Tannieres, M. Roche, A. Blanchet, N. C. Manoukis
Summary: The study tested different screen types for designing an effective augmentorium for controlling pests, and found that one screen type ('crystal mesh') was the best option, providing effective control against olive fruit fly and Mediterranean fruit fly.
JOURNAL OF INSECT SCIENCE
(2022)
Article
Agronomy
Luis F. Aristizabal, Melissa A. Johnson
Summary: Coffee leaf rust (CLR) is a highly damaging disease for the coffee industry globally. In Hawaii, CLR was first detected in 2020 and rapidly spread across the state. A monitoring program was initiated in Kona, West Hawaii Island, to track the spread of this invasive disease across different elevations. The study provides insights into CLR patterns and suggests improved fungicide coverage and timing are necessary to control the disease effectively.
Article
Multidisciplinary Sciences
Hui Fang, Barney P. Caton, Nicholas C. Manoukis, Godshen R. Pallipparambil
Summary: In the United States, square grid trapping surveys have been used for exotic insects without rigorous evaluation. This study used simulations to investigate the effectiveness of two representative designs and designed improved grids for both species. The results showed that improved grids can reduce costs while maintaining survey performance.
SCIENTIFIC REPORTS
(2022)
Article
Entomology
Dara G. Stockton, Nicholas Manoukis
Summary: Invasive tephritid fruit flies pose a significant economic challenge to agricultural pest management. A peptide-based insecticide shows promising efficacy against certain tephritid species, but its effectiveness is limited for other species.
JOURNAL OF APPLIED ENTOMOLOGY
(2022)
Article
Entomology
Nicholas C. Manoukis, Jason Leathers, Kyle Beucke, Lori A. F. N. Carvalho
Summary: Jackson traps baited with male lures with or without insecticides are essential for surveillance and monitoring against pest tephritid fruit flies. The efficiency of these traps depends on the combination of trap/lure/toxicant. The study found that plastic polymer plugs and pre-packaged DDVP strips can effectively replace the current liquid lure/naled combinations without affecting trap efficiency for eight weeks or longer. The 'high tack' adhesive did not show any advantage over the current standard, and the combination of lure + DDVP had different efficiencies for different fruit fly species.
JOURNAL OF APPLIED ENTOMOLOGY
(2023)
Article
Multidisciplinary Sciences
Nicole D. Miller, Theodore J. Yoder, Nicholas C. Manoukis, Lori A. F. N. Carvalho, Matthew S. Siderhurst
Summary: Fruit flies, such as the melon fly, are major pests that affect horticulture globally. Understanding their movement is crucial for effective control strategies. This study used harmonic radar tagging to track individual fruit flies and found that they exhibited strong flight directional biases, possibly influenced by wind direction. Additionally, flight distances varied in different environments. These findings have important implications for improving pest control and modeling.
Article
Entomology
Barney P. Caton, Hui Fang, Godshen R. Pallipparambil, Nicholas C. Manoukis
Summary: Typical delimitation trapping survey designs for insect populations often use regularly spaced grids, but other shapes have not been evaluated. This study investigated the use of transect-based designs, incorporating crossed, spoked, and parallel lines of traps, and compared them to a regular grid design. The results showed that transect-based designs can reduce servicing distances by 65-89% without compromising detection probabilities. This study suggests that trap-sect designs have the potential to reduce costs and increase flexibility in delimitation surveys.
JOURNAL OF ECONOMIC ENTOMOLOGY
(2023)
Article
Entomology
Rieks D. van Klinken, Daniel W. Gladish, Nicholas C. Manoukis, Peter Caley, Matthew P. Hill
Summary: Pest insect surveillance using lures is commonly used to support market access for traded articles, but less frequently used to provide confidence in pest freedom within registered trade sites. A simulation model was used to evaluate the effectiveness of site-based surveillance strategies in detecting pests originating from within or outside the site. The results showed that trap density and lure attractiveness were the primary factors affecting detection probability, and high detection probability could be achieved within 7 days using realistic values for these factors.
JOURNAL OF ECONOMIC ENTOMOLOGY
(2023)
Article
Entomology
Luis F. Aristizabal, Melissa A. Johnson, Suzanne Shriner, Marisa Wall
Summary: Coffee is the second most economically important agricultural crop in Hawaii, but the introduction of coffee berry borer has posed a significant challenge to growers. This study found that frequent and efficient harvesting is an effective and economically viable alternative to frequent pesticide applications.
JOURNAL OF ECONOMIC ENTOMOLOGY
(2023)
Article
Ecology
Melissa A. Johnson
Summary: Tropical rainforest communities often have a small number of species-rich genera that contribute disproportionately to alpha diversity. This study focused on the assembly patterns of Cyrtandra species in the Pacific Basin and found that coexisting species have closer phylogenetic relationships and phenotypic similarities than expected by chance. The presence of phylogenetic signal in floral traits suggests that pollinators act as a filter, selecting for similar floral morphology among closely related species. Leaf size also contributes to niche clustering at different spatial scales. Overall, this study supports the idea that niche-based processes structure diversity in plant communities at regional and local scales.
ECOLOGY AND EVOLUTION
(2023)
Article
Entomology
Donna Lee, Melissa A. Johnson, Luis F. Aristizabal, Suzanne Shriner, Catherine Chan, Susan Miyasaka, Marisa Wall
Summary: Since its introduction to Hawaii in 2010, coffee berry borer (CBB) has caused significant economic damage to the coffee industry in the islands. We evaluated the economic benefits of managing CBB using three strategies: the use of the entomopathogenic fungus Beauveria bassiana alone, early integrated pest management (IPM), and research-based IPM. Our findings show that all types of management provided economic benefits, but research-based IPM had the greatest impact on coffee yield, price, and revenue. This highlights the importance of research and outreach in developing effective IPM strategies.
Review
Entomology
Luis F. Aristizabal, Melissa A. Johnson, Yobana A. Marino, Paul Bayman, Mark G. Wright
Summary: This review discusses the efforts made in Hawaii and Puerto Rico to develop an integrated pest management (IPM) program for coffee berry borer (CBB). Although the benefits of monitoring CBB activity have been proven, few growers in either region utilize traps or 30-tree sampling to inform their spray decisions. In Puerto Rico, farmers face a combination of factors, including other pests, diseases, and recurring hurricane damage, that prevent them from effectively managing CBB.