Assessment of berry drop due to coffee berry disease and non-CBD factors in Arabica coffee under farmers fields of Southwestern Ethiopia

Garedew, Weyessa; Lemessa, Fikre; Pinard, Fabrice

doi:10.1016/j.cropro.2017.04.012

Cited by 14 publications

(5 citation statements)

References 14 publications

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“…Farmers who perceived a decrease in coffee berry disease more frequently used soil and water conservation, shade management, weeding, and improved cultivars than farmers who did not perceive changes in coffee berry disease. This supports previous reports that the use of irrigation, shade management, and improved cultivars can help to reduce coffee berry disease incidence (Benti et al, 2021; Garedew et al, 2017; Mouen Bedimo et al, 2007). In contrast, other diseases had no effect on management strategies.…”

Section: Discussionsupporting

confidence: 90%

Using local knowledge to reconstruct climate‐mediated changes in disease dynamics and yield—A case study on Arabica coffee in its native range

Ayalew,

Hylander,

Börjeson

et al. 2024

Plants People Planet

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Societal Impact StatementAdapting agriculture to climate change requires an understanding of the long‐term relationship between climate, disease dynamics, and yield. While some countries have monitored major crop diseases for decades or centuries, comparable data is scarce or non‐existent for many countries that are most vulnerable to climate change. For this, a novel approach was developed to reconstruct climate‐mediated changes in disease dynamics and yield. Here, a case study on Arabica coffee in its area of origin demonstrates how to combine local knowledge, climate data, and spatial field surveys to reconstruct disease and yield time series and to postulate and test hypotheses for climate–disease–yield relationships.Summary While some countries have monitored crop diseases for several decades or centuries, other countries have very limited historical time series. In such areas, we lack data on long‐term patterns and drivers of disease dynamics, which is important for developing climate‐resilient disease management strategies. We adopted a novel approach, combining local knowledge, climate data, and spatial field surveys to understand long‐term climate‐mediated changes in disease dynamics in coffee agroforestry systems. For this, we worked with 58 smallholder farmers in southwestern Ethiopia, the area of origin of Arabica coffee. The majority of farmers perceived an increase in coffee leaf rust and a decrease in coffee berry disease, whereas perceptions of changes in coffee wilt disease and Armillaria root rot were highly variable among farmers. Climate data supported farmers' understanding of the climatic drivers (increased temperature, less rainy days) of these changes. Temporal disease‐climate relationships were matched by spatial disease‐climate relationships, as expected with space‐for‐time substitution. Understanding long‐term disease dynamics and yield is crucial to adapt disease management to climate change. Our study demonstrates how to combine local knowledge, climate data and spatial field surveys to reconstruct disease time series and postulate hypotheses for disease‐climate relationships in areas where few long‐term time series exist.

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Section: Discussionsupporting

confidence: 90%

Using local knowledge to reconstruct climate‐mediated changes in disease dynamics and yield—A case study on Arabica coffee in its native range

Ayalew,

Hylander,

Börjeson

et al. 2024

Plants People Planet

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“…Arabica coffee does not tolerate too high temperature and the crop is usually grown high in tropical mountains or highlands. The range of elevation favouring Arabica coffee cultivation varies considerably across the tropical belt; in east Africa, the crop is usually found in the range 1000–2000 m asl (Garedew et al ., 2017; Liebig et al ., 2018). There, H. hampei usually thrives in coffee plantations below 1400 m asl, where the climate is warmer.…”

Section: Discussionmentioning

confidence: 99%

Temperature-dependent development and survival of immature stages of the coffee berry borer Hypothenemus hampei (Coleoptera: Curculionidae)

Azrag

Yusuf

Pirk

et al. 2019

Bull. Entomol. Res.

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Although the coffee berry borer, Hypothenemus hampei (Ferrari) (Coleoptera: Curculionidae: Scolytinae) is the most destructive insect pest of coffee worldwide, there is much to learn about its thermal biology. This study aimed to develop temperature-based models for H. hampei development and to provide the thermal requirements of immature stages in the laboratory. Using a new observation method, larval development and survival were monitored daily on fresh Arabica coffee seeds, under seven constant temperatures in the range 15–35°C, with 80 ± 5% RH and 12:12 L:D photoperiod. Linear and non-linear functions were fitted to the development data plotted against temperature, using Insect Life Cycle Modelling software (ILCYM). Temperature significantly affected the development time of all immature stages. Egg incubation period ranged 4.6–16.8 days, under temperature between 30 and 15°C. No development occurred at 35°C and the larval stage did not develop to pupa at 15°C. The minimum temperature threshold (Tmin) estimated from linear regression was 10.5, 13.0, 15.0 and 13.0°C, for egg, larva, pupa and the total development from egg to adult, respectively. The maximum temperature threshold (Tmax) estimated from the Sharpe and DeMichele function was 32°C for egg to adult development. The thermal constant (k) was estimated at 78.1, 188.7, 36.5 and 312.5 degree days, for egg, larva, pupa and for egg to adult, respectively. Our results will help understand and predict the pest population dynamics and distribution in coffee plantations as impacted by temperature, and as such, will contribute to a more efficient management of the pest.

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“…Temperature increase by mid-21 st century could intensify coffee diseases incidence (Garedew et al 2017a) and bring in new pests (Jaramillo et al 2011), therefore affecting coffee production, and pushing agriculture expansion at higher elevation. Variability of rainfall regime can also influence the coffee berry disease insurgence.…”

Section: Contemporarily Higher Temperatures Enhance Silicon Assimilamentioning

confidence: 99%

Views from two mountains: exploring climate change impacts on traditional farming communities of Eastern Africa highlands through participatory scenarios

et al. 2018

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Assessment of berry drop due to coffee berry disease and non-CBD factors in Arabica coffee under farmers fields of Southwestern Ethiopia

Cited by 14 publications

References 14 publications

Using local knowledge to reconstruct climate‐mediated changes in disease dynamics and yield—A case study on Arabica coffee in its native range

Using local knowledge to reconstruct climate‐mediated changes in disease dynamics and yield—A case study on Arabica coffee in its native range

Temperature-dependent development and survival of immature stages of the coffee berry borer Hypothenemus hampei (Coleoptera: Curculionidae)

Views from two mountains: exploring climate change impacts on traditional farming communities of Eastern Africa highlands through participatory scenarios

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