Portugal has "low" genetically modified organism levels in non-GM maize:
Portuguese conventional maize does not have adventitious levels of genetically modified material above the EU threshold of 0.9%, the Ministry of Agriculture reports. Ministry inspectors took 18 samples of conventional maize that was planted near GM maize in 2006. Eight of the samples had an adventitious presence of below 0.5%. The Ministry carried out 30 inspections, covering 68% of the area adjacent to GM crops, and found no infractions. It questioned 27 GM maize farmers, who represented 89% of the GM maize area. "Almost all" said that they would plant GM maize this year, citing economic benefits. Portugal's GM maize area tripled this year to over 4000 ha (see this page). Rules setting GMO-free areas have been in force since last September.