GM crops cause legal tangle- can cause organic farms to lose certification if cross pollinated.

"Like many organic farmers, one of Jeff Fiorovich's biggest fears is that the apples, pumpkins and other crops he grows in Watsonville one day might be contaminated by genetically engineered varieties from a neighboring farm.

If that happens, "you can't be certified as organic," he said. "It destroys your business."

But if Fiorovich's Crystal Bay Farm was contaminated by wind, birds or people accidentally spreading the altered seeds or pollen, his ability to learn the source and seek legal damages would be severely limited.

City, county and state authorities in California typically are not told the specific locations of genetically manipulated plants.

Only the U.S. Agriculture Department's Animal and Plant Health Inspection Service gathers such data, and it usually does not share it with state officials because farmers say that would compromise their confidential business information." LINK