date:Jan 02, 2014
About 30 percent of the major global cereal crops rice, wheat and corn - may have reached their maximum possible yields in farmers fields, according to UNL research published this week in Nature Communications.
These findings raise concerns about efforts to increase food production to meet growing global populations.
Yields of these crops have recently decreased or plateaued. Future projections that would ensure global food security are typically based on a constant increase in yield, a trend