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Some Crop Plants Don’t Benefit from Elevated Carbon Dioxide Levels

The University of Illinois has released a new review that shows some crops, including corn, cannot distribute their resources effectively to take advantage of extra CO2 in the atmosphere. Although some types of crop plants, including soybeans, rice, canola, and all trees, become more productive under elevated CO2 levels, other types of crops, including corn, sorghum, and sugarcane, are no more productive with more CO2. Scientists say that these plants would have to be engineered to allow them to have more productivity under conditions likely to exist as atmospheric CO2 levels increase.