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Romeis, Jörg; Naranjo, Steven E.; Meissle, Michael; Shelton, Anthony M.
Biological control, March 2019, 2019-03-00, Letnik: 130Journal Article
•Insecticidal Bt crops were grown on more than 100 million hectares in 2017.•Risk assessment considers exposure and toxicity of natural enemies to Bt proteins.•Bt proteins appear not to harm natural enemies.•Reduced insecticide use in Bt crops can enhance the conservation of natural enemies.•Bt technology represents a powerful tool for IPM. Genetically engineered (GE) crops producing insecticidal proteins from Bacillus thuringiensis (Bt) (mainly Cry proteins) have become a major control tactic for a number of key lepidopteran and coleopteran pests, mainly in maize, cotton, and soybean. As with any management tactic, there is concern that using GE crops might cause adverse effects on valued non-target species, including arthropod predators and parasitoids that contribute to biological control. Such potential risks are addressed prior to the commercial release of any new GE plant. Over the past 20+ years, extensive experience and insight have been gained through laboratory and field-based studies of the non-target effects of crops producing Cry proteins. Overall, the vast majority of studies demonstrates that the insecticidal proteins deployed today cause no unintended adverse effects to natural enemies. Furthermore, when Bt crops replace synthetic chemical insecticides for target pest control, this creates an environment supportive of the conservation of natural enemies. As part of an overall integrated pest management (IPM) strategy, Bt crops can contribute to more effective biological control of both target and non-target pests. The growing use of insecticidal seed treatments in major field crops (Bt or not) may dampen the positive gains realized through reductions in foliar and soil insecticides. Nonetheless, Bt technology represents a powerful tool for IPM.
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Vir: Osebne bibliografije
in: SICRIS
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