Growing cotton that has been genetically modified to produce insecticidal toxins inevitably leads tpo the development of resistance in the target insects. To slow down the phenomenon, seed firms can now supply farmers with ready-to-use mixtures of modified and non-modified seeds, which are intended to serve as refuges. However, are these refuges, inside crop plots, as effective as the external refuges recommended to date? Researchers from CIRAD and the University of Arizona recently demonstrated that these mixtures carry risks, since they increase the dominance of insect resistance, if the insects are capable of moving from one plant to another.
via CIRAD - Actualités / News http://ift.tt/1DtXKCL
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