Emerging pests and diseases of Southeast Asian cassava: a comprehensive evaluation of geographic priorities, management options and research needs
Cassava 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...
| Autores principales: | , , , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Wiley
2016
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/71130 |
| _version_ | 1855534267264663552 |
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| author | Graziosi, Ignazio Minato, Nami Álvarez, Elizabeth Ngo, Dung Tien Trinh, Hoat Xuan Aye, Tin Maung Pardo, Juan Manuel Wongtiem, Prapit Wyckhuys, Kris A.G. |
| author_browse | Aye, Tin Maung Graziosi, Ignazio Minato, Nami Ngo, Dung Tien Pardo, Juan Manuel Trinh, Hoat Xuan Wongtiem, Prapit Wyckhuys, Kris A.G. Álvarez, Elizabeth |
| author_facet | Graziosi, Ignazio Minato, Nami Álvarez, Elizabeth Ngo, Dung Tien Trinh, Hoat Xuan Aye, Tin Maung Pardo, Juan Manuel Wongtiem, Prapit Wyckhuys, Kris A.G. |
| author_sort | Graziosi, Ignazio |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Cassava 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 |
| format | Journal Article |
| id | CGSpace71130 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace711302025-11-12T05:57:49Z Emerging pests and diseases of Southeast Asian cassava: a comprehensive evaluation of geographic priorities, management options and research needs Graziosi, Ignazio Minato, Nami Álvarez, Elizabeth Ngo, Dung Tien Trinh, Hoat Xuan Aye, Tin Maung Pardo, Juan Manuel Wongtiem, Prapit Wyckhuys, Kris A.G. manihot esculenta phenacoccus manihoti biological control pest insects insect control cassava food security south east asia control biológico insectos dañinos yuca invasive species asia sudoriental especie invasiva seguridad alimentaria Cassava 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 2016-06 2016-02-23T14:27:09Z 2016-02-23T14:27:09Z Journal Article https://hdl.handle.net/10568/71130 en Limited Access application/pdf Wiley Graziosi, 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. |
| spellingShingle | manihot esculenta phenacoccus manihoti biological control pest insects insect control cassava food security south east asia control biológico insectos dañinos yuca invasive species asia sudoriental especie invasiva seguridad alimentaria Graziosi, Ignazio Minato, Nami Álvarez, Elizabeth Ngo, Dung Tien Trinh, Hoat Xuan Aye, Tin Maung Pardo, Juan Manuel Wongtiem, Prapit Wyckhuys, Kris A.G. Emerging pests and diseases of Southeast Asian cassava: a comprehensive evaluation of geographic priorities, management options and research needs |
| title | Emerging pests and diseases of Southeast Asian cassava: a comprehensive evaluation of geographic priorities, management options and research needs |
| title_full | Emerging pests and diseases of Southeast Asian cassava: a comprehensive evaluation of geographic priorities, management options and research needs |
| title_fullStr | Emerging pests and diseases of Southeast Asian cassava: a comprehensive evaluation of geographic priorities, management options and research needs |
| title_full_unstemmed | Emerging pests and diseases of Southeast Asian cassava: a comprehensive evaluation of geographic priorities, management options and research needs |
| title_short | Emerging pests and diseases of Southeast Asian cassava: a comprehensive evaluation of geographic priorities, management options and research needs |
| title_sort | emerging pests and diseases of southeast asian cassava a comprehensive evaluation of geographic priorities management options and research needs |
| topic | manihot esculenta phenacoccus manihoti biological control pest insects insect control cassava food security south east asia control biológico insectos dañinos yuca invasive species asia sudoriental especie invasiva seguridad alimentaria |
| url | https://hdl.handle.net/10568/71130 |
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