On New Hampshire Public Radio I heard an interview with the Wired editor who went to Colombia.  They put a lot of drama into that, too, but the conclusion was that no super-coca has been genetically engineered.  He said the peasants refer to the herbicide-surviving coca plants as "boliviana negra" and now plant it exclusively, since all other crops, food or coca, are killed by the aerial spraying.  He took some and had the genetic code sequenced, and he said it wasn't genetically modified.

They didn't mention the possibility that some coca survives Monsanto's glysophate because aerial spraying misses it.  Still, the Wired explanation seems likely: the indiscriminate spraying is so widespread that some 10 percent of coca plants, with a natural immunity, have been identified and are being quickly adopted by peasant farmers.

He made a disturbing reference to "cocaine plants" but that seemed a one-time mistake.  There was also no questioning of the purity of the drug-eradication goals nor the effectiveness in reducing U.S. consumption.  But until I hear from someone who's spend more time on the ground in Colombia, I'll take as accurate the Wired report on a glysophate-resistant strain of coca.