I think you may be reading PR spin from Monsanto.
Have you seen this recent report: http://www.motherjones.com/tom-philpott/2013/02/do-gmo-crops-have-lower-yields
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GMO crops
I think you may be reading PR spin from Monsanto.
Have you seen this recent report: http://www.motherjones.com/tom-philpott/2013/02/do-gmo-crops-have-lower-yields