While a court in Mexico has halted field trials of biotech corn, tests in Brazil are continuing for a disease-resistant bean and farmers are embracing methods that improve yields and reduce the need for herbicides. The contrasting approaches illustrate the way that social and philosophical issues can play out in debates about crops, and corn's significance to Mexican culture is part of the reason behind the controversy there, said economist Jose Falck-Zepeda of the International Food Policy Research Institute.

Related Summaries