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In a November,2015 National Geographic,pp.90-92,'Crop Changes',from,International Food Policy Research Institute and UN Food and Agricultural Org.:
*Climate change is likely to be most forgiving of wheat,but not enough to offset losses from other major crops.
*Midwestern US 20% drop in corn production.
*More pests for mid-elevation potato-growing areas.
*Brazilian farmers will see a 16% decline.
*N.European potato farmers see longer growing season,while farther south will become increasingly dry.
*New areas will open up for corn,but yields will decline in existing areas.
*It may be possible to grow potatoes farther north or higher in mountains.
*Rice may do well.
*Virtually all climate scenarios show reduced wheat yields,more devastating crop diseases.
*West Africa may support more rice.
*Indonesia's rice will be largely spared,but corn will decline as much as 20%.
*New parts of Australia will become arable,but droughts will require efficient farming if growing wheat is to continue.
*Yields of crops like soybeans could increase,but soybean and barley nutritive content may be less.