Emerging pests and diseases of Southeast Asian cassava: a comprehensive evaluation of geographic priorities, management options and research needs

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dc.creatorGraziosi, Ignazio
dc.creatorMinato, Nami
dc.creatorÁlvarez, Elizabeth
dc.creatorNgo, Dung Tien
dc.creatorTrinh, Hoat Xuan
dc.creatorAye, Tin Maung
dc.creatorPardo, Juan Manuel
dc.creatorWongtiem, Prapit
dc.creatorWyckhuys, Kris A.G.
dc.date2016-06
dc.date2016-02-23T14:27:09Z
dc.date2016-02-23T14:27:09Z
dc.date.accessioned2026-06-27T14:47:52Z
dc.descriptionCassava is a major staple, bio‐energy and industrial crop in many parts of the developing world. In Southeast Asia, cassava is grown on >4 million ha by nearly 8 million (small‐scale) farming households, under (climatic, biophysical) conditions that often prove unsuitable for many other crops. While SE Asian cassava has been virtually free of phytosanitary constraints for most of its history, a complex of invasive arthropod pests and plant diseases has recently come to affect local crops. We describe results from a region‐wide monitoring effort in the 2014 dry season, covering 429 fields across five countries. We present geographic distribution and field‐level incidence of the most prominent pest and disease invaders, introduce readily‐available management options and research needs. Monitoring work reveals that several exotic mealybug and (red) mite species have effectively colonised SE Asia's main cassava‐growing areas, occurring in respectively 70% and 54% of fields, at average field‐level incidence of 27 ± 2% and 16 ± 2%. Cassava witches broom (CWB), a systemic phytoplasma disease, was reported from 64% of plots, at incidence levels of 32 ± 2%. Although all main pests and diseases are non‐natives, we hypothesise that accelerating intensification of cropping systems, increased climate change and variability, and deficient crop husbandry are aggravating both organism activity and crop susceptibility. Future efforts need to consolidate local capacity to tackle current (and future) pest invaders, boost detection capacity, devise locally‐appropriate integrated pest management (IPM) tactics, and transfer key concepts and technologies to SE Asia's cassava growers. Urgent action is needed to mobilise regional as well as international scientific support, to effectively tackle this phytosanitary emergency and thus safeguard the sustainability and profitability of one of Asia's key agricultural commodities. © 2016 Society of Chemical Industry
dc.formatapplication/pdf
dc.identifierhttps://hdl.handle.net/10568/71130
dc.identifier.urihttp://hdl.handle.net/123456789/88725
dc.languageen
dc.publisherWiley
dc.rightsLimited Access
dc.sourceGraziosi, Ignazio; Minato, Nami; Álvarez, Elizabeth; Ngo, Dung Tien; Trinh, Hoat Xuan; Aye, Tin Maung; Pardo, Juan Manuel; Wongtiem, Prapit; Wyckhuys, Kris A.G.. 2016. Emerging pests and diseases of Southeast Asian cassava: a comprehensive evaluation of geographic priorities, management options and research needs . Pest Management Science 72(6): 1071-1089.
dc.subjectmanihot esculenta
dc.subjectphenacoccus manihoti
dc.subjectbiological control
dc.subjectpest insects
dc.subjectinsect control
dc.subjectcassava
dc.subjectfood security
dc.subjectsouth east asia
dc.subjectcontrol biológico
dc.subjectinsectos dañinos
dc.subjectyuca
dc.subjectinvasive species
dc.subjectasia sudoriental
dc.subjectespecie invasiva
dc.subjectseguridad alimentaria
dc.titleEmerging pests and diseases of Southeast Asian cassava: a comprehensive evaluation of geographic priorities, management options and research needs
dc.typeJournal Article

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