Mirid Bug Outbreaks in Multiple Crops Correlated with Wide-Scale Adoption of Bt Cotton in China

@article{Lu2010MiridBO,
  title={Mirid Bug Outbreaks in Multiple Crops Correlated with Wide-Scale Adoption of Bt Cotton in China},
  author={Yanhui Lu and Kongming Wu and Yu-ying Jiang and Bing Xia and Ping Li and Hongqiang Feng and Kris A. G. Wyckhuys and Yu-yuan Guo},
  journal={Science},
  year={2010},
  volume={328},
  pages={1151 - 1154}
}
Collateral Damage Cotton crops that have been bioengineered to express the insecticidal toxin derived from Bacillus thuringiensis (Bt) carry their own insect control, particularly against the cotton bollworm, and are less dependent on externally applied pesticides. Lu et al. (p. 1151, published online 13 April) now show that reduction in general pesticide use in cotton-growing regions of northern China has shifted the balance of regional pest populations. Bt-expressing cotton now serves as a… 
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  • Biology, Medicine
    Journal of agricultural and food chemistry
  • 2011
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References

SHOWING 1-10 OF 99 REFERENCES
Suppression of Cotton Bollworm in Multiple Crops in China in Areas with Bt Toxin–Containing Cotton
TLDR
Analysis of the population dynamics of H. armigera from 1992 to 2007 in China indicated that a marked decrease in regional outbreaks of this pest in multiple crops was associated with the planting of Bt cotton, which may reduce its presence on other host crops and the need for insecticide sprays in general.
Long-term regional suppression of pink bollworm by Bacillus thuringiensis cotton
TLDR
It is suggested that long-term regional pest suppression after deployment of Bt crops may also contribute to reducing the need for insecticide sprays.
Transgenic crops expressing Bacillus thuringiensis toxins and biological control
TLDR
Because Bt-transgenic varieties can lead to substantial reductions in insecticide use in some crops, they can contribute to integrated pest management systems with a strong biological control component.
The Present and Future Role of Insect-Resistant Genetically Modified Cotton in IPM
Transgenic cottons producing Cry toxins from Bacillus thuringiensis (Bt) provide for control of lepidopteran pests and were first commercially grown in Australia, Mexico and the USA in 1996. As of
The evolution of cotton pest management practices in China.
TLDR
Risk assessment analyses show that the natural refuges derived from the mixed-planting system of cotton, corn, soybean, and peanut on small-scale, single-family-owned farms play an important function in delaying evolution of cotton bollworm resistance, and that no trend toward Bt Cotton resistance has been apparent despite intensive planting of Bt cotton over the past several years.
Environmental impact and risk management strategies of Bt cotton commercialization in China
TLDR
Transgenic cotton expressing the Cry1Ac toxin from Bacillus thuringiensis has been planted widely in China since 1997, and reached 70% of the total cotton area in 2006, indicating that the potential risk of resistance of the target pest has become a major threat for sustainable planting of Bt cotton.
Farm-scale evaluation of the impacts of transgenic cotton on biodiversity, pesticide use, and yield
TLDR
The results indicate that impacts of agricultural intensification can be reduced when replacement of broad-spectrum insecticides by narrow-spectrums Bt crops does not reduce control of pests not affected by BT crops.
Influences of Bacillus thuringiensis Berliner Cotton Planting on Population Dynamics of the Cotton Aphid, Aphis gossypii Glover, in Northern China
TLDR
It is suggested that Bt cotton planting not only played an important role in the control of H. armigera, but also efficiently prevented cotton aphid resurgence in response to insecticide use.
Economic, ecological, food safety, and social consequences of the deployment of bt transgenic plants.
TLDR
Transgenic plants expressing insecticidal proteins from the bacterium, Bacillus thuringiensis (Bt), are revolutionizing agriculture and have shown positive economic benefits to growers and reduced the use of other insecticides.
Integration of Insect-Resistant Genetically Modified Crops within IPM Programs
TLDR
This chapter reviews the defining elements of IPM and examines the attributes of insect-resistant GM crops as IPM tools.
...
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4
5
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