An experienced group of 13 US and Canadian entomologists has issued an unmistakenly stern warning that a recently approved procedure for simultaneously planting mixtures of genetically modified (GM) and conventional crop seeds could trigger several unforseen and less than desirable outcomes. The method is a newer twist on providing an in-field refuge for susceptible insects in transgenic insecticidal crop plantings. The group, headed by D.W. Onstad, University of Illinois, concluded that a process to establish refuges in GM crops using seed mixtures, known as 'refuge-in-a-bag,' will result in making pest monitoring more difficult.
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