University of Canterbury researchers have found that the biotechnologies used in north American staple crop production are lowering yields and increasing pesticide use compared to western Europe.
A conspicuous difference is the adoption of genetically modified/engineered (GM) seed in North America, and the use of non-GM seed in Europe.
"We found that the combination of non-GM seed and management practices used by western Europe is increasing corn yields faster than the use of the GM-led packages chosen by the US."
You can read the press release from the University of Canterbury here
And the full scientific paper here