Dustin Mulvaney and Tim Krupnik article on why transgenic rice hasn't caught on in California
Although 10 years have passed since the first regulatory approval of genetically engineered, herbicide-tolerant rice, no transgenic rice is grown commercially, either in California or nationwide.
In contrast, genetically modified crops such as soy, corn and cotton have received widespread adoption by U.S. farmers.
Debate continues over whether genetically modified rice would be a plus or minus for the environment. While herbicide-tolerant varieties could reduce herbicide applications overall — they could also contribute to herbicide resistance in weedy rice.
For the time being, however, market considerations have trumped the debate over environmental costs and benefits.