The most economical and most effective way to control plant virus diseases is to breed genetically engineered anti-virus varieties.

通过植物抗病毒基因工程进行作物育种是防治病毒病害最经济有效的方法。

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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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