Genetically modified soya plants. Field of rows of genetically modified (GM) 'Roundup Ready' soya plants (Glycine max). These plants are from stock that has had a gene introduced by genetic engineering, which makes it resistant to Roundup herbicide. A crop of 'Roundup Ready' soya can therefore be sprayed with the herbicide to kill weeds, but without damaging the soya plants. This theoretically increases soya bean yields, but there is concern over the safety of GM foods. The remains of the previous crop, maize, is still seen. Photographed in Iowa, USA. GM soya plants were introduced in the USA in 1996.
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