Local and regional drivers of the African coffee white stem borer (Monochamus leuconotus) in Uganda

authored by: Theresa Liebig, Régis Babin, Fabienne Ribeyre, Peter Läderach, Piet van Asten, Hans Michael Poehling, Laurence Jassogne, Christian Cilas, Jacques Avelino
Abstract: The African coffee white stem borer (CWSB) Monochamus leuconotus is a destructive pest of Arabica coffee in Africa. Documentation on outbreaks, spatiotemporal development and the relationship with different environmental conditions and coffee production system is limited. To underpin effective control measures, we studied aspects of local and regional pest drivers in Eastern Uganda. At the local scale, we (i) characterized the temporal development of CWSB and explored associations with environmental and shade-related indicators. During two growing seasons and on 84 coffee plots, we recorded CWSB incidence/infestation and microclimate on an altitudinal gradient and different shading systems. The bimodal rainfall, altitude and shade affected CWSB development through their effect on minimum temperature. At the landscape level, we (ii) analyzed the spatial pattern of CWSB. Data on CWSB were collected on 180 plots. Pest incidence showed a spatial arrangement varying by districts. A possible relationship with human movement and the landscape context contributing to pest spread is suggested. CWSB control measures should be synchronized with the bimodal rainfall patterns and an emphasis should be given to identifying and limiting pathways of pest spread from highly infested to new areas.
Organisation(s): Phytomedicine Section
External Organisation(s): International Institute of Tropical Agriculture (IITA), Ibadan
International Centre of Insect Physiology and Ecology Nairobi
French Agricultural Research Centre for International Development (CIRAD)
Climate Change, Agriculture and Food Security (CCAFS)
Olam International Ltd
Tropical Agricultural Research and Higher Education Center (CATIE)
Inter-American Institute for Cooperation on Agriculture (IICA)
Type: Article
Journal: Agricultural and Forest Entomology
Volume: 20
Pages: 514-522
No. of pages: 9
ISSN: 1461-9555
Publication date: 03.10.2018
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Forestry, Agronomy and Crop Science, Insect Science
Sustainable Development Goals: SDG 13 - Climate Action
Electronic version(s): https://doi.org/10.1111/afe.12284 (Access: Open)
https://doi.org/10.15488/3354 (Access: Open)