New crop pest takes Africa at lightning speed.

@article{Stokstad2017NewCP,
  title={New crop pest takes Africa at lightning speed.},
  author={E. L. Robert Stokstad},
  journal={Science},
  year={2017},
  volume={356 6337},
  pages={
          473-474
        }
}
  • E. Stokstad
  • Published 5 May 2017
  • Medicine, Biology
  • Science
The fall armyworm ( Spodoptera frugiperda ) is marching across Africa and destroying maize fields with an astonishing speed, after arriving from the Western Hemisphere at least 16 months ago. The damage to maize could total $3 billion in the next 12 months. Eventually, damage could be limited with a range of pest-management techniques, including plant extracts such as neem oil or biopesticides based on viruses that infect armyworms. Parasitoid wasps could serve as biological control. Planting… 
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The fall armyworm strain associated with most rice, millet, and pasture infestations in the Western Hemisphere is rare or absent in Ghana and Togo
TLDR
Genetic tests of specimens from rice and corn area traps failed to show evidence of differential mating between strains, consistent with the R-strain being rare or even absent in Africa and, at least for the Ghana-Togo area, this R-Strain lack does not appear to be due to limitations in pest monitoring.
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The review analyzes suggested control strategies for FAW, based on the efforts implemented in SSA so far, and lessons learned from global regions where the FAW is already a major pest.
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Biological versus chemical control of fall armyworm and Lepidoptera stem borers of maize ( Zea mays )
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The Neem oil at one-week interval was more effective in reducing the incidence and severity of the attack by the caterpillars as well as on the number of larvae throughout the trial.
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These potent fungal isolates could be suitable candidates for developing biopesticides in an integrated manner to control the FAW population in China and enhance maize crop output by decreasing the hatchability of eggs and reducing the feeding ability of early first to third instar FAW larvae.
Oviposition Preferences, Bt Susceptibilities, and Tissue Feeding of Fall Armyworm (Lepidoptera: Noctuidae) Host Strains.
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This is the first study to compare the larval fitness and survival of rice/corn hybrid fall armyworm to that of pure host strains using a tissue-based approach and the preference for corn as an oviposition host may have an impact on resistance management when coupled with differential host strain Bt tolerances.
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The status and control measures of the fall armyworm are reviewed, which could be useful to improve its management in maize fields in Ethiopia.
Fall armyworm invasion heightens pesticide expenditure among Chinese smallholder farmers.
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This work demonstrates how the FAW invasion has altered pest management regimes in Yunnan's maize crop, deepening farmers' pesticide dependency, and potentially exacerbating its burden on household budgets.
Ovicidal effects of entomopathogenic fungal isolates on the invasive Fall armyworm Spodoptera frugiperda (Lepidoptera: Noctuidae)
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These isolates with high cumulated mortality, especially ICIPE 78 and 7, which are already commercialized for spider mites and ticks control respectively, would be good candidates for development as biopesticides for management of FAW in Africa if further evidence of their efficacy is obtained in the field.
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