Much appreciated by farmers for their reliability, most corn, canola and soybeans grown in this country are now genetically engineered varieties.

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Because much of the loss to insects and diseases occurs after the plants are fully grown, the use of genetically engineered varieties that have higher post-harvest yields means that the farming (and irrigation) of fewer plants can produce the same total amount of food.

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In fact, there are scores of non-genetically engineered herbicide-tolerant varieties grown all around the world.

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